The document discusses the benefits of exercise for both physical and mental health. It notes that regular exercise can reduce the risk of diseases like heart disease and diabetes, improve mood, and reduce feelings of stress and anxiety. Exercise is also said to boost brain health and function as we age by increasing blood flow and oxygen to the brain.
The document discusses the benefits of exercise for both physical and mental health. It notes that regular exercise can reduce the risk of diseases like heart disease and diabetes, improve mood, and reduce feelings of stress and anxiety. Exercise is also said to boost brain health and function as we age by increasing blood flow and oxygen to the brain.
4. BIOLOGY DR ALSAQABI 2020BIOLOGY DR ALSAQABI 2012
True coelom
(annelids
Chordates )
body
wall
coelom
digestive
tract
digestive
cavity
{
{
False or pseudocoelom
(roundworms are
pseudocoelomates)
body
wall
pseudocoelo
m
digestive
tract
digestive
cavity
{
No coelom
(cnidarians , flatworms )
body
wall
digestiv
e
tract
digestive
cavity
{
Body cavity structure varies among phyla
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5. BIOLOGY DR ALSAQABI 2020BIOLOGY DR ALSAQABI 2012
Radial
symmetrycentral axis
plane of
symmetry
Bilateral symmetry
anterior
plane of
symmetry
posterior
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11. BIOLOGY DR ALSAQABI 2020BIOLOGY DR ALSAQABI 2012
ovary
vagina
eggs
mouth
cuticle
posterio
r
end
anterior
end
intestine
A freshwater nematode
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