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Mca anatomy

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Hieder Al-Shami
Hieder Al-Shami

The document discusses the anatomy of the middle cerebral artery (MCA), describing its origin, course, segments, branches, variations, and the functional anatomy of the areas it supplies. Specifically, it notes that the MCA anatomy includes describing the origin, course segmented into M1-M4 portions, early and perforating branches, and cortical branches that supply the frontal, parietal, and temporal lobes. It then provides details on the functions of these lobes and clinical deficits that can result from ischemia in the territory of the MCA.

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Hieder A’ala MCA anatomy
When discussing anatomy of an artery you have to describe: 1. Origin 2. Course of the artery 3. Segments 4. Branches 5. Variation 6. Functional anatomy of the area supplied with
Origin  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
 Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
Course of the artery  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
Mca anatomy
Course of the artery  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
Segments  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
Segments
M3 M4 M2 M1
Segments  M1= sphenoidale  M2 = insular  M3 = opercular  M4 = cortical
Types of MCA bracnhes  A= stem arteries  B= early branches  C= perforating branches  D= cortical branches
B= Early Branches  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
C= perforating branches  Lenticulostriate art.  medial ,intermediate and lateral group
D= cortical branches  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
D= cortical branches  1.Frontal branches :orbitofrontal, prefrontal, pre-central and central.  2.Parietal br. : anterior and posterior parietal and angular  3. Temporal br. : ant., mid and post. Temporal ,temporal pole and temporooccipital br.
Mca anatomy
Mca anatomy
Functional anatomy of the area supplied with
Frontal Lobe  Conscientiousness  Judgments  How we initiate activity in response to our environment.  Controls our emotional response.  Controls our expressive language.  Assigns meaning to the words we choose (abstract thought)  Attention span  Involves word associations (language planning)  Memory for habits and motor activities (short term memory)  Motor cortex—Voluntary movement  Impulse control  Perseverance
Frontal Lobe Deficit—Problems  Loss of simple movement of various body parts (Paralysis).  Inability to plan a sequence of complex movements needed to complete multi-stepped tasks, such as making coffee (Sequencing).  Loss of spontaneity in interacting with others.  Loss of flexibility in thinking.  Persistence of a single thought (Perseveration).  Inability to focus on task (Attending).  Mood changes (Emotionally Labile ).  Changes in social behavior.  Changes in personality.  Difficulty with problem solving.  Inablility to express language (Broca's Aphasia).
Parietal Lobe Function  Location for visual attention.  Location for touch perception.  Goal directed voluntary movements.  Manipulation of objects.  Integration of different senses that allows for understanding a single concept.
Parietal Lobe—Problems resulting from deficit  Inability to attend to more than one object at a time.  Inability to name an object (Anomia).  Inability to locate the words for writing (Agraphia).  Problems with reading (Alexia).  Difficulty with drawing objects.  Difficulty in distinguishing left from right.  Difficulty with doing mathematics (Dyscalculia).  Lack of awareness of certain body parts and/or surrounding space (Apraxia) that leads to difficulties in self-care.  Inability to focus visual attention.  Difficulties with eye and hand coordination.
Temporal Lobe Function  Hearing ability  Memory acquisition  Some visual perceptions  Categorization of objects.
Temporal Lobe Deficits—Problems  Difficulty in recognizing faces (Prosopagnosia).  Difficulty in understanding spoken words (Wernicke's Aphasia).  Disturbance with selective attention to what we see and hear.  Difficulty with identification of, and verbalization about objects.  Short-term memory loss.  Interference with long-term memory  Increased or decreased interest in sexual behavior.  Inability to catagorize objects (Catagorization).  Right lobe damage can cause persistant talking.  Increased aggressive behavior.
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Mca anatomy

  • 2. When discussing anatomy of an artery you have to describe: 1. Origin 2. Course of the artery 3. Segments 4. Branches 5. Variation 6. Functional anatomy of the area supplied with
  • 3. Origin  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 4.  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 5. Course of the artery  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 7. Course of the artery  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 8. Segments  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 10. M3 M4 M2 M1
  • 11. Segments  M1= sphenoidale  M2 = insular  M3 = opercular  M4 = cortical
  • 12. Types of MCA bracnhes  A= stem arteries  B= early branches  C= perforating branches  D= cortical branches
  • 13. B= Early Branches  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 14. C= perforating branches  Lenticulostriate art.  medial ,intermediate and lateral group
  • 15. D= cortical branches  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level
  • 16. D= cortical branches  1.Frontal branches :orbitofrontal, prefrontal, pre-central and central.  2.Parietal br. : anterior and posterior parietal and angular  3. Temporal br. : ant., mid and post. Temporal ,temporal pole and temporooccipital br.
  • 19. Functional anatomy of the area supplied with
  • 20. Frontal Lobe  Conscientiousness  Judgments  How we initiate activity in response to our environment.  Controls our emotional response.  Controls our expressive language.  Assigns meaning to the words we choose (abstract thought)  Attention span  Involves word associations (language planning)  Memory for habits and motor activities (short term memory)  Motor cortex—Voluntary movement  Impulse control  Perseverance
  • 21. Frontal Lobe Deficit—Problems  Loss of simple movement of various body parts (Paralysis).  Inability to plan a sequence of complex movements needed to complete multi-stepped tasks, such as making coffee (Sequencing).  Loss of spontaneity in interacting with others.  Loss of flexibility in thinking.  Persistence of a single thought (Perseveration).  Inability to focus on task (Attending).  Mood changes (Emotionally Labile ).  Changes in social behavior.  Changes in personality.  Difficulty with problem solving.  Inablility to express language (Broca's Aphasia).
  • 22. Parietal Lobe Function  Location for visual attention.  Location for touch perception.  Goal directed voluntary movements.  Manipulation of objects.  Integration of different senses that allows for understanding a single concept.
  • 23. Parietal Lobe—Problems resulting from deficit  Inability to attend to more than one object at a time.  Inability to name an object (Anomia).  Inability to locate the words for writing (Agraphia).  Problems with reading (Alexia).  Difficulty with drawing objects.  Difficulty in distinguishing left from right.  Difficulty with doing mathematics (Dyscalculia).  Lack of awareness of certain body parts and/or surrounding space (Apraxia) that leads to difficulties in self-care.  Inability to focus visual attention.  Difficulties with eye and hand coordination.
  • 24. Temporal Lobe Function  Hearing ability  Memory acquisition  Some visual perceptions  Categorization of objects.
  • 25. Temporal Lobe Deficits—Problems  Difficulty in recognizing faces (Prosopagnosia).  Difficulty in understanding spoken words (Wernicke's Aphasia).  Disturbance with selective attention to what we see and hear.  Difficulty with identification of, and verbalization about objects.  Short-term memory loss.  Interference with long-term memory  Increased or decreased interest in sexual behavior.  Inability to catagorize objects (Catagorization).  Right lobe damage can cause persistant talking.  Increased aggressive behavior.