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A&P Quiz 11
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Blood Supply
Composed of red and white corpuscles and platelets
If stopped to the brain for 5 min or more neurons begin to die
Red Corpuscles
Produced in bone marrow
Carry oxygen from lungs to rest of the body
White Corpuscles
Fight infection
Arteries
Carry blood away from the heart
strong structure
Under pressure
High blood pressure can lead to Heart attack and stroke which can cause brain damage
Veins
Carry blood toward heart
Not under pressure
Not as Strong as the arteries
Capillaries
Connect arteries to veins
Spread out n small vessels to feed the cells
Arteriovenous Malformation
When veins and arteries connect without capillaries in between
Peripheral Nervous System
Composed of cranial and spinal nerves
31 pairs of spinal nerves
22 pairs of cranial nerves
Spinal Nerves
Leave spinal cord
Dorsal root
: carries sensory messages to CNS
Ventral Root (anterior)
: carries messages from CNS
8 Cervical Nerves
12 Thoracic Nerves
5 Lumbar Nerves
5 Sacral Nerves
1 Coccygeal Nerve
Cranial Nerves
See Handout
Association Tracts
Connect the Lobes and allow them to communicate with each other
Not as large as corpus callosum
Stays within one hemisphere
Commissural Tracts
Connect 2 hemispheres
Corpus callosum largest of these tracts
Autonomic Nervous System
Controls involuntary actions of the body
Divided into Parasympathetic and Sympathetic Divisions
Alerts Body to stress
Sympathetic Division
Speeds up heart rate
Constricts peripheral blood vessels and redirects blood
Elevates Blood Pressure
Raises eyelids and dilates Pupils
Parasympathetic Division
Calms body down
Slows heart rate
Increases amount of saliva and digestion
Author
Annjones430
ID
269072
Card Set
A&P Quiz 11
Description
A&P Quiz 11
Updated
4/3/2014, 4:35:06 PM
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