exam 3

Question 1

cell bodies of somatic motor neurons are located in

Answer 1

the anterior gray horn and exit into the periphery via the ventral root

Question 2

synapses that release ____ are described as adrenergic

Answer 2

norepinephrine

Question 3

synapses that use ACH as a transmitter are called

Answer 3

cholinergic

Question 4

which glial cells found in the PNS

Answer 4

satellite cells, schwann cells

Question 5

whichglial cells found in the CNS

Answer 5

ependymal cells, astrocytes, oligodendrocytes, microglia

Question 6

excitatory post synaptic potential

Answer 6

a graded depolarization caused by the arrival of a neurotransmitter at the postsynaptic membrane.

Question 7

results from the opening and closing of chemically gated ion channels in the plasma membrane that lead to membrane depolarization

Answer 7

EPSP

Question 8

inhibitory postsynaptic potential

Answer 8

a graded hyperpolarization of the post synaptic membrane
- said to be inhibited because a larger than usual depolarizing stimulus is needed to bring the membrane potential to threshold

Question 9

inhibitory postsynaptic potential

Answer 9

a graded hyperpolarization of the post synaptic membrane
- said to be inhibited because a larger than usual depolarizing stimulus is needed to bring the membrane potential to threshold

Question 10

integrates the effects of all the graded potentials that affect one portion of the plasma membrane

Answer 10

summation

Question 11

dendrites of multipolar neurons

Answer 11

carry info toward the soma

Question 12

smallest of blood vessels in which gases, nutrients, and wastes are exchanged

Answer 12

capillaries

Question 13

internal jugular veins

Answer 13

drain blood from the brain

Question 14

cerebral spinal fluid produced in the

Answer 14

choroid plexus

contains ependymal cells that regulate this process

Question 15

excess cerebral spinal fluid returned to venous circulation by

Answer 15

diffusion across the arachnoid villi

Question 16

minimizes number of motor commands

make movements more efficient and smooth

Answer 16

cerebellum

Question 17

organized with control of foot muscles most medial, head muscles lateral

Answer 17

pre-central gyrus

Question 18

pre-central gyrus is a part of the

Answer 18

primary motor cortex

Question 19

directs voluntary movements

- controls contralateral muscles

Answer 19

primary motor cortex

Question 20

primary sensory cortex

Answer 20

• post central gyrus

- receives contralateral somatic sensory information: touch, pressure

Question 21

prefrontal cortex functional area

Answer 21

analyzes incoming info

Question 22

left hemisphere

Answer 22

• language based skills

- analytical, mathematical, logic skills

Question 23

tasked with

• identification of objects based on sensory info
• recognizing faces
• analyze emotional context of conversation or event

Answer 23

right hemisphere

Question 24

reticular activation system

Answer 24

arousal and maintenance of consciousness

• broadcast to all areas of the brain
• increase or decrease activity in certain areas of the brain depending on what action needs to be happening
• needs to be recovered every 16 hours

Question 25

motivational system

Answer 25

limbic system