M1: CNS/PNS pt. 2

Question 1

Corpus Collosum

Answer 1

set of axons connecting the two cerebral hemispheres

Question 2

Occipital Lobe

Answer 2

lobe of the cortex, posterior, primarily involved in visual processing, including V1 (Striate Cortex)

Question 3

Temporal Lobe

Answer 3

lobe of the cortex, lateral, primarily involved in auditory processing (e.g. A1 and Wernicke’s) and higher visual (IT)

Question 4

Parietal Lobe

Answer 4

lobe of the cortex posterior to the Central Sulcus, primarily involved in somatosensort and visuo-spatial mapping

Question 5

Frontal Lobe

Answer 5

Lobe of the cortex anterior to Central Sulcus, including Motor & Premotor areas

Question 6

Prefrontal Cortex

Answer 6

Most anterior part of the frontal lobe, involved in self control, strategy, cultural rules, etc

Question 7

Spinal Cord

Answer 7

part of the CNS other than the brain

Question 8

Dorsal Root vs Ventral Root

Answer 8

Part of the spinal cord through which snesory info enters vs through which motor info exits

Question 9

Bell-Magendie Law

Answer 9

“Law” governing dorsal and ventral roots directions of info flow

Question 10

Grey vs White Matter

Answer 10

Area of the spinal cord consisting of soma vs consisting of myelinated axons

Question 11

Central Canal

Answer 11

Tube through core of spinal cord containing fluid

Question 12

Ventricles

Answer 12

four hollow chambers (plus aqueducts) in brain that produce the fluid that feeds, cleans and cushions brain

Question 13

Cerebral Spinal Fluid (CSF)

Answer 13

Fluid, produced by ventricles, found within spinal cord and in covering surrounding CNS

Question 14

Meninges

Answer 14

Three-layered (Dura-Mater, Fluid filled Arachnoid-Space, and Pia-Mater) protective covering that surrounds CNS

Question 15

Blood Brain Barrier

Answer 15

Semi-permeable barrier, controls what chemicals enter brain, created by closing gaps between capillaries’ endothelial cells

Question 16

Somatic Nervous System

Answer 16

that part of the PNS that is responsible for the body’s interaction with the environment

Question 17

Autonomic Nervous System

Answer 17

that part of the PNS that is responsible for assessing and maintaining the body’s internal environment

Question 18

Vagus

Answer 18

“Wandering” nerve in the ANS that enervates multiple oragns

Question 19

Sympathetic vs Parasympathetic

Answer 19

that part of the ANS that produces the “fight or flight” response vs that which facilitates relaxation and replenishment

Question 20

Parasympathetic Rebound

Answer 20

Extreme compensatory response of one system to extreme activation of the other - can lead to fainting, ulcers, voodoo death