The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise stimulates the production of endorphins in the brain which elevate mood and reduce stress levels.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
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 mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms for those who already suffer from conditions like anxiety and depression.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms for those who already suffer from conditions like anxiety and depression.
2. Bilateria الطبقات ثنائية
•الث التماثل لديها احليوانات معظمنائي.
•األنو من العظمى الغالبية تنتمياع
إىل احليوانيةcladeBilateriaالذي ،
ث متاثل ذات حيوانات من يتألفنائي
الطبقات ثالثي وتطور.
• Most animals have bilateral
symmetry.
• The vast majority of animal
species belong to the clade
Bilateria, which consists of
animals with bilateral
symmetry and triploblastic
development.
Biology Alsaqabi -2019 2
3. There can be two
Ectoderm
Endoderm
or three
Mesoderm
Diploblastic الطبقات ثنائية Triploblastic الطبقات ثالثية
Tissue Layers االنسجة طبقات
Biology Alsaqabi -20193
4. Body Cavities الجسم تجويف
Coelomate - the coelom is lined on both
sides with mesoderm
Pseudocoelomate - the
coelom (= pseudocoelom) is
lined on one side with
mesoderm
Acoelomate - there is no body cavity
between the digestive tract and body wall
Body Cavities - There are three different kinds
Biology Alsaqabi -20194