Lab 1: Nervous System

Question 1

Organization of Nervous System

Answer 1

1. receptors send signal of pain to the CNS through
2. afferent axons of
3. peripheral nervous system
4. information reaches CNS and is processed
5. motor response is sent through
6. efferent axons of PNS system
7. effectors which are skeletal muscles

Question 2

Supporting cells of the PNS (2)

Answer 2

schwann

satellite

Question 3

Supporting cells of CNS (4)

Answer 3

astrocyte
oligodendrocyte
microglia
ependymal

Question 4

Form myelin sheaths (2)

Answer 4

schwann

oligodendrocyte

Question 5

Regulate chemical environment of neurons (2)

Answer 5

satellite

astrocyte

Question 6

Generate and transmit nerve impulse

Answer 6

neuron

Question 7

Line cavities of brain and spinal cord; form and move CSF

Answer 7

Ependymal

Question 8

Phagocytes that destroy debris, dead tissue, and pathogens

Answer 8

Microglia

Question 9

Many processes associated with the cell body

Answer 9

multipolar

Question 10

Has two cell processes

Answer 10

bipolar

Question 11

One short process extends from the cell body and divides

Answer 11

unipolar

Question 12

Neuron is rare and in the sensory neuron in the eye and nose

Answer 12

bipolar

Question 13

Functional neuron types that are structurally multipolar neurons (2)

Answer 13

interneuron

motor neuron

Question 14

Neuron types whose cell bodies are in the spinal cord (CNS)

Answer 14

interneuron

motor neuron

Question 15

Neuron type that is structurally either a unipolar neuron or bipolar neuron whose cell body is found in the PNS

Answer 15

sensory

Question 16

Functional neuron type most prevalent in the CNS

Answer 16

interneuron

Question 17

Contains myelinated fibers

Answer 17

white matter

Question 18

Contains neuron cell bodies and unmyelinated fibers

Answer 18

gray matter

Question 19

Axons that are white in colour and conduct nerve impulses faster

Answer 19

myelinated fibers

Question 20

Axons that are grey in color

Answer 20

unmyelinated fibers

Question 21

Gaps in the myelin sheath

Answer 21

Nodes of Ranvier

Question 22

Parts of a multipolar neuron in the correct order of receiving and sending

Answer 22

1. dendrites
2. cell body
3. trigger zone
4. axon hillock
5. axon
6. axon terminal
7. synapse
8. second neuron or effector