Lecture 9 Assignment

Question 1

The brain and spinal comprise which division of the nervous system?
________________________________

Answer 1

Central Nervous System

Question 2

What type of nervous tissue cell provides a framework of support for the neurons?
_______________________________________

Answer 2

Gilial cell

Question 3

Axons are insulated by a lipid-rich substance called _____________________.

Answer 3

myelin

Question 4

Which functional division of the nervous system is responsible for conscious perception and voluntary motor responses? _________________________________

Answer 4

somatic nervous system (SNS)

Question 5

Which cells are considered to be the basis of nervous tissue? ____________________.

Answer 5

neurons

Question 6

Gaps in the myelin covering of an axon are called _________________________.

Answer 6

node of Ranvier

Question 7

Which cell in the peripheral nervous system produces myelin? ____________________

Answer 7

Schwann cell

Question 8

A _________________l is a distribution of charge across the cell membrane, measured in millivolts (mV)

Answer 8

potential

Question 9

__________________________ is when the membrane potential moves toward zero.

Answer 9

depolarization

Question 10

While an action potential is in progress, another one cannot be initiated. That effect is referred to as the _________________________.

Answer 10

refractory period

Question 11

Nerve stimulus propagation along the length of a myelinated axon is called
____________________________________.

Answer 11

saltatory conduction

Question 12

In what type of synapse is a neurotransmitter released from one cell and it affects the other cell? __________________________

Answer 12

chemical synapse

Question 13

Which structure in the cerebrum provides the major pathway for communication between the two hemispheres of the cerebral cortex? _________________________

Answer 13

the corpus callosum

Question 14

____________________ is responsible for the production of language, or controlling movements responsible for speech

Answer 14

Broca’s area

Question 15

The _______________________is a collection of nuclei that are largely involved in regulating homeostasis.

Answer 15

hypothalamus

Question 16

In the spinal cord, the ____________________ is responsible for sensory processing.

Answer 16

Posterior (dorsal) horn

Question 17

Individual axons are surrounded by loose connective tissue called the
____________________________________.

Answer 17

endoneurium

Question 18

Which cranial nerve is responsible for vision? ___________________________

Answer 18

optic nerve

Question 19

Which cranial nerve is responsible for controlling the muscles of mastication? _________________________________

Answer 19

trigeminal nerve

Question 20

Which cranial neve is responsible for the muscles involved in facial expressions?
_________________________________

Answer 20

facial nerve