M1 - Central Nervous System

Question 1

Functions of the CNS

Answer 1

perceive and discriminate sensory stimuli,
express emotions,
responsible for respiration and heartbeat,
organizes and regulates behavior, thinking, remembering, and understanding

Question 2

meninges

Answer 2

a three-layer membrane that surrounds and protects the cerebral hemispheres and the spinal cord; protects the brain from external trauma and the bony protuberances of the skull

Question 3

dura mater

Answer 3

most superior/peripheral layer of the meninges;

tough and strong (think dura-durable); adheres to the inner surface of the skull

Question 4

arachnoid

Answer 4

middle layer of the meninges;

CSF drains and moves through this layer; thin and cobwebby (think arachnoid-spider)

Question 5

subarachnoid space

Answer 5

inferior to the arachnoid layer of the meninges;

contains blood vessels

Question 6

pia mater

Answer 6

inferior/central layer of the meninges; a very thin membrane that closely adheres to the brain’s surface-the gyri and sulci (pia means fragile or soft); blood vessels run from the subarachnoid space through the pia mater

Question 7

ventricles

Answer 7

4 total;

house the ependymal that create the CSF; filled with CSF

Question 8

Cerebral Spinal Fluid (CSF)-functions, place of production and reabsorption

Answer 8

regulates intracranial pressure, cleanses and nourishes CNS, absorbs shock; produced in choroid plexu, reabsorbed through venous system (arachnoid granulations)