際際滷

際際滷Share a Scribd company logo
EXTRA OCULAR MUSCLES
ANATOMY
Presented By : MANISH CHAUDHARY
B.Sc. Optometry, 3rd year
INTRODUCTION
 Extra ocular muscles are the muscles that
control the movement of eye.
 There are six extra ocular muscles i.e four
rectii muscles and two oblique muscles.
NERVE SUPPLY OF EXTRA OCULAR MUSCLES
 Among 12 pairs of cranial nerves ,3 pairs of
cranial nerves supply extra ocular muscles.
#Third cranial nerve
#Fourth cranial nerve
#Sixth cranial nerve
 Oculomotor nerve : Superior rectus , inferior
rectus , medial rectus and inferior oblique
 Trochlear nerve : Superior oblique muscle
 Abducent nerve : Lateral rectus muscle
BLOOD SUPPLY OF EXTRA OCULAR MUSCLES
MUSCLES ARTERIES
Superior rectus muscle Lateral branch of opthalmic artery
Medial rectus muscle Medial branch of opthalmic artery ,
lacrimal artery
Inferior rectus muscle Medial branch of opthalmic artery , infra
orbital artey
Lateral rectus muscle Lateral branch of opthalmic artery
Superior oblique muscle Lateral branch of opthalmic artery
Inferior oblique muscle Medial branch of opthalmic artery , infra
orbital artey
LPS Lateral branch of opthalmic artery
ACTIONS OF EXTRA OCULAR MUSCLES
 Extra ocular muscles have three main
actions ie. Primary action , secondary action
and tertiary action .
Extra ocular muscles anatomy
Muscles Primary Action Secondary Action Tertiary Action
Medial Rectus Adduction
Lateral Rectus Abduction
Superior Rectus Elevation Intorsion Adduction
Inferior Rectus Depression Extorsion Adduction
Superior Oblique Intorsion Depression Abduction
Inferior Oblique Extorsion Elevation Abduction
THANK YOU

More Related Content

What's hot (20)

Kinetic vs static & automated
Kinetic vs static & automatedKinetic vs static & automated
Kinetic vs static & automated
Junu Shrestha
Ophthalmic Prisms: Prismatic Effects and Decentration
Ophthalmic Prisms: Prismatic Effects and DecentrationOphthalmic Prisms: Prismatic Effects and Decentration
Ophthalmic Prisms: Prismatic Effects and Decentration
RabindraAdhikary
Spectacle
SpectacleSpectacle
Spectacle
Swati Panara
Binocular refraction techniques, binocular balancing & binocular
Binocular refraction techniques, binocular balancing & binocularBinocular refraction techniques, binocular balancing & binocular
Binocular refraction techniques, binocular balancing & binocular
sabina paudel
Test types used in optometry
Test types used in optometryTest types used in optometry
Test types used in optometry
optom.praveen p
Lensometer
LensometerLensometer
Lensometer
Asif Faraz Nasir
Accommodation insufficiency treatment
Accommodation insufficiency treatment Accommodation insufficiency treatment
Accommodation insufficiency treatment
Amrit Pokharel
Ophthalmic lens design
Ophthalmic lens designOphthalmic lens design
Ophthalmic lens design
Al-Shifa College of Paramedical Science,Perinthalmanna
Principle of visual acuity charts class
Principle of visual acuity charts classPrinciple of visual acuity charts class
Principle of visual acuity charts class
Raju Kaiti
Position of gaze and axes
Position of gaze and axesPosition of gaze and axes
Position of gaze and axes
MANISH CHAUDHARY
Rgp lens
Rgp lensRgp lens
Rgp lens
Sachitanand Singh
Slit Lamp Illumination Techniques
Slit Lamp Illumination TechniquesSlit Lamp Illumination Techniques
Slit Lamp Illumination Techniques
Irina Kezik
Layers of cornea
Layers of corneaLayers of cornea
Layers of cornea
riddhi27
AS-OCT
AS-OCTAS-OCT
AS-OCT
Swetha Ravichandran
Vergences of the eye
Vergences of the eyeVergences of the eye
Vergences of the eye
Tukezban Huseynova, MD
Spectacle intolerance
Spectacle intoleranceSpectacle intolerance
Spectacle intolerance
OPTOM FASLU MUHAMMED
Ophthalmic prisms
Ophthalmic prismsOphthalmic prisms
Ophthalmic prisms
Aliasger Fakhruddin
Refraction by the eye, schematic eye, reduced eye By kausar Ali
Refraction by the eye, schematic eye, reduced eye By kausar AliRefraction by the eye, schematic eye, reduced eye By kausar Ali
Refraction by the eye, schematic eye, reduced eye By kausar Ali
kausar Ali
ARC: abnormal retinal correspondence, eccentric fixation
ARC: abnormal retinal correspondence, eccentric fixationARC: abnormal retinal correspondence, eccentric fixation
ARC: abnormal retinal correspondence, eccentric fixation
aditi Jain
Sensory & motor evaluation of strabismus
Sensory & motor evaluation of strabismusSensory & motor evaluation of strabismus
Sensory & motor evaluation of strabismus
Devdutta Nayak
Kinetic vs static & automated
Kinetic vs static & automatedKinetic vs static & automated
Kinetic vs static & automated
Junu Shrestha
Ophthalmic Prisms: Prismatic Effects and Decentration
Ophthalmic Prisms: Prismatic Effects and DecentrationOphthalmic Prisms: Prismatic Effects and Decentration
Ophthalmic Prisms: Prismatic Effects and Decentration
RabindraAdhikary
Binocular refraction techniques, binocular balancing & binocular
Binocular refraction techniques, binocular balancing & binocularBinocular refraction techniques, binocular balancing & binocular
Binocular refraction techniques, binocular balancing & binocular
sabina paudel
Test types used in optometry
Test types used in optometryTest types used in optometry
Test types used in optometry
optom.praveen p
Accommodation insufficiency treatment
Accommodation insufficiency treatment Accommodation insufficiency treatment
Accommodation insufficiency treatment
Amrit Pokharel
Principle of visual acuity charts class
Principle of visual acuity charts classPrinciple of visual acuity charts class
Principle of visual acuity charts class
Raju Kaiti
Position of gaze and axes
Position of gaze and axesPosition of gaze and axes
Position of gaze and axes
MANISH CHAUDHARY
Slit Lamp Illumination Techniques
Slit Lamp Illumination TechniquesSlit Lamp Illumination Techniques
Slit Lamp Illumination Techniques
Irina Kezik
Layers of cornea
Layers of corneaLayers of cornea
Layers of cornea
riddhi27
Refraction by the eye, schematic eye, reduced eye By kausar Ali
Refraction by the eye, schematic eye, reduced eye By kausar AliRefraction by the eye, schematic eye, reduced eye By kausar Ali
Refraction by the eye, schematic eye, reduced eye By kausar Ali
kausar Ali
ARC: abnormal retinal correspondence, eccentric fixation
ARC: abnormal retinal correspondence, eccentric fixationARC: abnormal retinal correspondence, eccentric fixation
ARC: abnormal retinal correspondence, eccentric fixation
aditi Jain
Sensory & motor evaluation of strabismus
Sensory & motor evaluation of strabismusSensory & motor evaluation of strabismus
Sensory & motor evaluation of strabismus
Devdutta Nayak

Similar to Extra ocular muscles anatomy (20)

The Anatomy of Spinal Cord
The Anatomy of Spinal Cord The Anatomy of Spinal Cord
The Anatomy of Spinal Cord
Nafisa maliaut Eshamoni
Brachial Plexus Anatomy
Brachial Plexus AnatomyBrachial Plexus Anatomy
Brachial Plexus Anatomy
Abdulaziz Alanzi
EXTRA OCULAR MUSCLES OF EYE
EXTRA OCULAR MUSCLES OF EYEEXTRA OCULAR MUSCLES OF EYE
EXTRA OCULAR MUSCLES OF EYE
Rajeswari Kesavan
The muscles of the back lecture 21.pptx.
The muscles of the back lecture 21.pptx.The muscles of the back lecture 21.pptx.
The muscles of the back lecture 21.pptx.
CabdallaMuqtaarXayle
Peripheral Nervous System
Peripheral Nervous SystemPeripheral Nervous System
Peripheral Nervous System
Kevin Young
Anatomy of 3rd cranial nerve
Anatomy of 3rd cranial nerveAnatomy of 3rd cranial nerve
Anatomy of 3rd cranial nerve
OPTOM FASLU MUHAMMED
5-BrachialPlexus.ppt
5-BrachialPlexus.ppt5-BrachialPlexus.ppt
5-BrachialPlexus.ppt
Doc Safe
Cervical plexus
Cervical plexusCervical plexus
Cervical plexus
Ali Faris
Nerves of thoracic limb
Nerves of thoracic limbNerves of thoracic limb
Nerves of thoracic limb
Dr. Waqas Nawaz
Anatomy bones of upper limbs
Anatomy bones of upper limbsAnatomy bones of upper limbs
Anatomy bones of upper limbs
Shifa medicine collage
Anatomy chap 2 deep fascia.pptx
Anatomy chap 2 deep fascia.pptxAnatomy chap 2 deep fascia.pptx
Anatomy chap 2 deep fascia.pptx
AyeshaNoor775174
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYENERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
karthik47012
Autonomic nervous system.pptx
Autonomic nervous system.pptxAutonomic nervous system.pptx
Autonomic nervous system.pptx
Shubham Shukla
Autonomic nervous system.pptx
Autonomic nervous system.pptxAutonomic nervous system.pptx
Autonomic nervous system.pptx
Shubham Shukla
3rd cranial nerve :Oculomotor nerve
3rd cranial nerve :Oculomotor nerve3rd cranial nerve :Oculomotor nerve
3rd cranial nerve :Oculomotor nerve
Kiran Suwal
Ch11 eoc
Ch11 eocCh11 eoc
Ch11 eoc
sagunthalah
MLS THE UPPER LIMB.pptxedited by pantic miazga oguda
MLS THE UPPER LIMB.pptxedited by pantic miazga ogudaMLS THE UPPER LIMB.pptxedited by pantic miazga oguda
MLS THE UPPER LIMB.pptxedited by pantic miazga oguda
panticmiazga
Peripheral nerve system
Peripheral nerve systemPeripheral nerve system
Peripheral nerve system
Amen Ullah
MUSCLES OF THE ORBIT and their significance
MUSCLES OF THE ORBIT and their significanceMUSCLES OF THE ORBIT and their significance
MUSCLES OF THE ORBIT and their significance
VinodThangaswamyS
Dr bikal paraplegia
Dr bikal paraplegiaDr bikal paraplegia
Dr bikal paraplegia
Bikal Lamichhane
Brachial Plexus Anatomy
Brachial Plexus AnatomyBrachial Plexus Anatomy
Brachial Plexus Anatomy
Abdulaziz Alanzi
EXTRA OCULAR MUSCLES OF EYE
EXTRA OCULAR MUSCLES OF EYEEXTRA OCULAR MUSCLES OF EYE
EXTRA OCULAR MUSCLES OF EYE
Rajeswari Kesavan
The muscles of the back lecture 21.pptx.
The muscles of the back lecture 21.pptx.The muscles of the back lecture 21.pptx.
The muscles of the back lecture 21.pptx.
CabdallaMuqtaarXayle
Peripheral Nervous System
Peripheral Nervous SystemPeripheral Nervous System
Peripheral Nervous System
Kevin Young
5-BrachialPlexus.ppt
5-BrachialPlexus.ppt5-BrachialPlexus.ppt
5-BrachialPlexus.ppt
Doc Safe
Cervical plexus
Cervical plexusCervical plexus
Cervical plexus
Ali Faris
Nerves of thoracic limb
Nerves of thoracic limbNerves of thoracic limb
Nerves of thoracic limb
Dr. Waqas Nawaz
Anatomy chap 2 deep fascia.pptx
Anatomy chap 2 deep fascia.pptxAnatomy chap 2 deep fascia.pptx
Anatomy chap 2 deep fascia.pptx
AyeshaNoor775174
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYENERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
NERVE SUPPLY TO EYE.pptx NERVE SUPPLY TO EYE
karthik47012
Autonomic nervous system.pptx
Autonomic nervous system.pptxAutonomic nervous system.pptx
Autonomic nervous system.pptx
Shubham Shukla
Autonomic nervous system.pptx
Autonomic nervous system.pptxAutonomic nervous system.pptx
Autonomic nervous system.pptx
Shubham Shukla
3rd cranial nerve :Oculomotor nerve
3rd cranial nerve :Oculomotor nerve3rd cranial nerve :Oculomotor nerve
3rd cranial nerve :Oculomotor nerve
Kiran Suwal
MLS THE UPPER LIMB.pptxedited by pantic miazga oguda
MLS THE UPPER LIMB.pptxedited by pantic miazga ogudaMLS THE UPPER LIMB.pptxedited by pantic miazga oguda
MLS THE UPPER LIMB.pptxedited by pantic miazga oguda
panticmiazga
Peripheral nerve system
Peripheral nerve systemPeripheral nerve system
Peripheral nerve system
Amen Ullah
MUSCLES OF THE ORBIT and their significance
MUSCLES OF THE ORBIT and their significanceMUSCLES OF THE ORBIT and their significance
MUSCLES OF THE ORBIT and their significance
VinodThangaswamyS

Recently uploaded (20)

DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTERDIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
daminipatel37
Recent advances in GIST management in 2024
Recent advances in GIST management in 2024Recent advances in GIST management in 2024
Recent advances in GIST management in 2024
Sameer Rastogi
Op-eds and commentaries 101: U-M IHPI Elevating Impact series
Op-eds and commentaries 101: U-M IHPI Elevating Impact seriesOp-eds and commentaries 101: U-M IHPI Elevating Impact series
Op-eds and commentaries 101: U-M IHPI Elevating Impact series
Kara Gavin
Details Study of Haemorrhage Modern & Ayurveda
Details Study of Haemorrhage Modern & AyurvedaDetails Study of Haemorrhage Modern & Ayurveda
Details Study of Haemorrhage Modern & Ayurveda
RaviAnand201252
BIOMECHANICS OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
BIOMECHANICS  OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptxBIOMECHANICS  OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
BIOMECHANICS OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
drnidhimnd
Biography of Dr. Vincenzo Giordano
Biography of Dr. Vincenzo GiordanoBiography of Dr. Vincenzo Giordano
Biography of Dr. Vincenzo Giordano
Dr. Vincenzo Giordano
surgical notes for new houseman.very good explanation
surgical notes for new houseman.very good explanationsurgical notes for new houseman.very good explanation
surgical notes for new houseman.very good explanation
musaAlRashid
Stability of Dosage Forms as per ICH Guidelines
Stability of Dosage Forms as per ICH GuidelinesStability of Dosage Forms as per ICH Guidelines
Stability of Dosage Forms as per ICH Guidelines
KHUSHAL CHAVAN
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptxOBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
Selvaraj Balasubramani
Presentaci坦 "Projecte Benestar". MWC 2025
Presentaci坦 "Projecte Benestar". MWC 2025Presentaci坦 "Projecte Benestar". MWC 2025
Presentaci坦 "Projecte Benestar". MWC 2025
Badalona Serveis Assistencials
Renal Physiology - Regulation of GFR and RBF
Renal Physiology - Regulation of GFR and RBFRenal Physiology - Regulation of GFR and RBF
Renal Physiology - Regulation of GFR and RBF
MedicoseAcademics
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
KHUSHAL CHAVAN
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
YIHENEW CHALLIE LIYEW
ALookInsideProvidenceResearchBiobanks.pdf
ALookInsideProvidenceResearchBiobanks.pdfALookInsideProvidenceResearchBiobanks.pdf
ALookInsideProvidenceResearchBiobanks.pdf
tiffanyecchang
Endocarditis.pptx
Endocarditis.pptxEndocarditis.pptx
Endocarditis.pptx
Nandish Sannaiah
MLS 208 - UNIT 4 A - Tissue Processing - ETANDO AYUK - SANU 1 - Secured.pdf
MLS 208 -  UNIT  4 A  -  Tissue Processing  - ETANDO AYUK - SANU 1 - Secured.pdfMLS 208 -  UNIT  4 A  -  Tissue Processing  - ETANDO AYUK - SANU 1 - Secured.pdf
MLS 208 - UNIT 4 A - Tissue Processing - ETANDO AYUK - SANU 1 - Secured.pdf
Eswatini Medical Christian University - EMCU / Southern Nazarene University - SANU
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
zilkerapurbo
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptxPARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
DrDivitasaxena1
Hingula.ppt- Rasadravya parichaya- NCISM
Hingula.ppt- Rasadravya parichaya- NCISMHingula.ppt- Rasadravya parichaya- NCISM
Hingula.ppt- Rasadravya parichaya- NCISM
Shri Shivayogeeshwar Rural Ayurvedic Medical college, INCHAL,
Module 3 Basic Life Support for the workplace
Module 3 Basic Life Support for the workplaceModule 3 Basic Life Support for the workplace
Module 3 Basic Life Support for the workplace
AbbieNunez
DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTERDIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
DIAGNOSIS OF PREGNANCY PPT IN ALL TRIMESTER
daminipatel37
Recent advances in GIST management in 2024
Recent advances in GIST management in 2024Recent advances in GIST management in 2024
Recent advances in GIST management in 2024
Sameer Rastogi
Op-eds and commentaries 101: U-M IHPI Elevating Impact series
Op-eds and commentaries 101: U-M IHPI Elevating Impact seriesOp-eds and commentaries 101: U-M IHPI Elevating Impact series
Op-eds and commentaries 101: U-M IHPI Elevating Impact series
Kara Gavin
Details Study of Haemorrhage Modern & Ayurveda
Details Study of Haemorrhage Modern & AyurvedaDetails Study of Haemorrhage Modern & Ayurveda
Details Study of Haemorrhage Modern & Ayurveda
RaviAnand201252
BIOMECHANICS OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
BIOMECHANICS  OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptxBIOMECHANICS  OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
BIOMECHANICS OF THE MOVEMENT OF THE SHOULDER COMPLEX.pptx
drnidhimnd
Biography of Dr. Vincenzo Giordano
Biography of Dr. Vincenzo GiordanoBiography of Dr. Vincenzo Giordano
Biography of Dr. Vincenzo Giordano
Dr. Vincenzo Giordano
surgical notes for new houseman.very good explanation
surgical notes for new houseman.very good explanationsurgical notes for new houseman.very good explanation
surgical notes for new houseman.very good explanation
musaAlRashid
Stability of Dosage Forms as per ICH Guidelines
Stability of Dosage Forms as per ICH GuidelinesStability of Dosage Forms as per ICH Guidelines
Stability of Dosage Forms as per ICH Guidelines
KHUSHAL CHAVAN
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptxOBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
OBSTRUCTIVE JAUNDICE- Problem Oriented Approach.pptx
Selvaraj Balasubramani
Renal Physiology - Regulation of GFR and RBF
Renal Physiology - Regulation of GFR and RBFRenal Physiology - Regulation of GFR and RBF
Renal Physiology - Regulation of GFR and RBF
MedicoseAcademics
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
Solubilization in Pharmaceutical Sciences: Concepts, Mechanisms & Enhancement...
KHUSHAL CHAVAN
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
reproductive disorder, etiology ,pathobiology ,clinical sign, treatment and p...
YIHENEW CHALLIE LIYEW
ALookInsideProvidenceResearchBiobanks.pdf
ALookInsideProvidenceResearchBiobanks.pdfALookInsideProvidenceResearchBiobanks.pdf
ALookInsideProvidenceResearchBiobanks.pdf
tiffanyecchang
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
Correlation of vitamin D level with prediabetes status_Dr Ahmed Al Montasir_f...
zilkerapurbo
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptxPARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
PARIS SYSTEM FOR URINE CYTOLOGY paris system of reporting urine slidespptx
DrDivitasaxena1
Module 3 Basic Life Support for the workplace
Module 3 Basic Life Support for the workplaceModule 3 Basic Life Support for the workplace
Module 3 Basic Life Support for the workplace
AbbieNunez

Extra ocular muscles anatomy

  • 1. EXTRA OCULAR MUSCLES ANATOMY Presented By : MANISH CHAUDHARY B.Sc. Optometry, 3rd year
  • 2. INTRODUCTION Extra ocular muscles are the muscles that control the movement of eye. There are six extra ocular muscles i.e four rectii muscles and two oblique muscles.
  • 3. NERVE SUPPLY OF EXTRA OCULAR MUSCLES Among 12 pairs of cranial nerves ,3 pairs of cranial nerves supply extra ocular muscles. #Third cranial nerve #Fourth cranial nerve #Sixth cranial nerve
  • 4. Oculomotor nerve : Superior rectus , inferior rectus , medial rectus and inferior oblique Trochlear nerve : Superior oblique muscle Abducent nerve : Lateral rectus muscle
  • 5. BLOOD SUPPLY OF EXTRA OCULAR MUSCLES MUSCLES ARTERIES Superior rectus muscle Lateral branch of opthalmic artery Medial rectus muscle Medial branch of opthalmic artery , lacrimal artery Inferior rectus muscle Medial branch of opthalmic artery , infra orbital artey Lateral rectus muscle Lateral branch of opthalmic artery Superior oblique muscle Lateral branch of opthalmic artery Inferior oblique muscle Medial branch of opthalmic artery , infra orbital artey LPS Lateral branch of opthalmic artery
  • 6. ACTIONS OF EXTRA OCULAR MUSCLES Extra ocular muscles have three main actions ie. Primary action , secondary action and tertiary action .
  • 8. Muscles Primary Action Secondary Action Tertiary Action Medial Rectus Adduction Lateral Rectus Abduction Superior Rectus Elevation Intorsion Adduction Inferior Rectus Depression Extorsion Adduction Superior Oblique Intorsion Depression Abduction Inferior Oblique Extorsion Elevation Abduction