CNS 208 EXAM 2 QUESTIONS & ANSWERS 2024/2025
Central Nervous System (CNS) - ANSWERSconsists of brain and spinal cord; integration and processes nervous information
Peripheral Nervous System (PNS) - ANSWERSnerves & ganglia sends info. to and receive info from CNS (some reflexes)
What does...
Central Nervous System (CNS) - ANSWERSconsists of brain and spinal cord; integration and processes
nervous information
Peripheral Nervous System (PNS) - ANSWERSnerves & ganglia sends info. to and receive info from CNS
(some reflexes)
What does the PNS contain? - ANSWERS12 pairs of cranial nerves, 31 pairs of spinal nerves, and nerve
plexuses (sensory, motor, mixed)
Brain - ANSWERS1.) soft, whitish-gray organ
2.) anatomically continuous with spinal cord
3.) Resides in cranial cavity
4.) directly or indirectly controls most of body's function
The brain weighs about... - ANSWERS1250-1450 grams of nervous tissue; consists of epithelial and
connective tissues as well
Ventricles - ANSWERSinternal cavities in the brain filled with *CSF*
Brain receives ____% of blood flow during periods of rest - ANSWERS20%, reflects its requirements for
huge amounts of oxygen, glucose, and nutrients
, Brain needs... - ANSWERSa lot of blood supply, blood carries oxygen, used to make ATP; glucose and
nutrients
Spinal Cord - ANSWERSlong tubular organ enclosed within protective vertebral cavity = *blends* with
inferior portion of brainstem = *ends between 1st and 2nd lumbar vertebrae*
Central Canal - ANSWERS*continuous with brain's ventricles* filled with CSF; an internal cavity within
spinal cord
Four Divisions of Brain - ANSWERS1.) Cerebrum
2.) Diencephalon
3.) Cerebellum
4.) Brainstem
Gyri - ANSWERSfolds
Sulci - ANSWERSdepressions between folds
The brain is protected by...(?) - ANSWERS1.) Cranial Bones
Function of Cranial Meninges - ANSWERS1.) Separate & support soft tissue of brain
2.) Enclose and protect blood vessels supplying brain
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