Nervous System #2

Question 0

What structure protects the spinal cord?

Answer 0

Meninges:connective tissue covering the brain and spinal cord to provide protection and nourishment

Question 1

List six functions of the brain

Answer 1

Thoughts/memory, speech/language, five senses, balance/coordination, behavior/emotion, judgment

Question 2

What are two functions of the spinal cord?

Answer 2

Connects the peripheral nervous system to the brain and coordinates simple reflexes

Question 3

What is the spinal nerve? Are they primarily mix sensory or motor nerves?

Answer 3

Typically a mixed nerve that carries motor and sensory signals between spinal cord and body

Question 4

What are the 12 nerves that emerge directly from the brain?

Answer 4

Cranial nerves

Question 5

What is in aferent nerve fiber?

Answer 5

Sensory nerve fibers that carry nerve impulses from receptors for the spinal cord and brain

Question 6

Compare and contrast a somatic sensory nerve and visceral sensory nerve

Answer 6

This sacral sensory nerves transport sensory information from organs to brain and spinal cord while the somatosensory nerves transport sensory information from skin muscle and joint and special senses to brain and spinal cord

Question 7

List and describe the two divisions of the autonomic nervous system

Answer 7

Sympathetic – fight or flight response parasympathetic – calming/rest and digest division

Question 8

What is a efferent nerve fiber?

Answer 8

Motor nerve fibers that carry nerve impulses from CNS two muscles organs and body

Question 9

Compare and contrast a somatic motor nerve and and autonomic motor nerve

Answer 9

Somatic motor nerves carry information from brain and spinal cord to voluntary muscles while autonomic motor nerves carry information from brain and spinal cord to organs, heart, and glands, or voluntary muscles

Question 10

Describe the following: dermatome, myotome ,sclerotome

Answer 10

Dermatome: area of skin supplied by nerves from a single spinal nerve root Myotome: muscle or muscle group supplied by nerves from a single spinal nerve root
Sclerotome: the area of bone innervated by a single spinal nerve root

Question 11

Receptor:

Answer 11

An organ or cell able to respond to light heat or other external stimulus and transmits a signal to a sensory nerve

Question 12

Sensory nerve:

Answer 12

Enclosed cable like a bundle of sensory nerve fibers in peripheral system

Question 13

Interneuron:

Answer 13

A neuron that forms a connection between other neurons

Question 14

Motor neuron:

Answer 14

nerves that carry signals from spinal cord to muscles to produce movement

Question 15

Effector muscle:

Answer 15

Muscle, gland, or organ capable of binding to a stimulus especially in nerve impulse

Question 16

What type of neuron is in the dorsal root of a spinal nerve?

Answer 16

Sensory nerves – afferent

Question 17

If I touch a hot stove with structure send info to the sensory nerve?

Answer 17

spinal nerves – spinal cord – brain

Question 18

What type of nerve is in the ventral route of a spinal nerve?

Answer 18

Contains motor nerves – efferent

Question 19

What structure located in the gray matter spinal cord transmits information between sensory nerve and motor nerves?

Answer 19

Cell bodies

Question 20

In order to prevent severe burn due to touching a hot stove motor nerves send information what structure?

Answer 20

Motor nerves send information to muscles

Question 21

List the number of spinal nerves in each of the following segments

Answer 21

– Cervical: C1 – C8
– Sacral: S1 – S5
– Thoracic: T1 – T
– Lumbar: L1 – L5

Question 22

What are four types of plexuses?

Answer 22

– Cervical plexus
– Brachial plexus
– Lumbar plexus
– sacral plexus