Nervous System 1

Question 1

What makes up the central nervous system (CNS)?

Answer 1

The brain and the spinal cord.

Question 2

Where is the brain located and how many neurons does it contain?

Answer 2

In the skull, contains 100 billion neurons.

Question 3

Where is the spinal cord located and how many neurons does it contain?

Answer 3

In the spinal column, contains 100 million neurons.

Question 4

What makes up the peripheral nervous system (PNS)?

Answer 4

The cranial nerves and the spinal nerves.

Question 5

How many pair of cranial nerves are there and where do they attach?

Answer 5

12 pairs, attach to the base of the brain.

Question 6

How many pairs of spinal nerves are there and where do they attach?

Answer 6

31 pairs, attach to the spinal cord.

Question 7

What is the function of the central nervous system (CNS)?

Answer 7

1. Analysis and interpretation of neural input (sensory).
2. Coordination and execution of neural output (motor)
3. Reflexes (involuntary)
4. Conscious responses (voluntary)
5. Logical thought
6. Memory
7. Emotions

Question 8

Which nervous system is responsible for analysis and interpretation of neural
input (sensory)?

Answer 8

CNS

Question 9

Which nervous system is responsible for coordination and execution of neural
output (motor)?

Answer 9

CNS

Question 10

Which nervous system is responsible for reflexes (involuntary)?

Answer 10

CNS

Question 11

Which nervous system is responsible for conscious responses (voluntary)?

Answer 11

CNS

Question 12

Which nervous system is responsible for logical thought?

Answer 12

CNS

Question 13

Which nervous system is responsible for memory?

Answer 13

CNS

Question 14

Which nervous system is responsible for emotions?

Answer 14

CNS

Question 15

Which nervous system is responsible for carrying sensory (afferent) nerve impulses to the CNS?

Answer 15

PNS

Question 16

Which nervous system is responsible for carrying motor (efferent) nerve impulses away from the CNS?

Answer 16

PNS

Question 17

Name the twelve cranial nerves.

Answer 17

1. Olfactory
2. Optic
3. Oculomotor
4. Trochlear
5. Trigeminal
6. Abducens
7. Facial
8. Vestibulocochlear
9. Glossopharyngeal
10. Vagus
11. Accessory
12. Hypoglossal

Question 18

What is the function of the olfactory nerve?

Answer 18

Olfaction (smell)

Question 19

What is the function of the optic nerve?

Answer 19

Vision

Question 20

What is the function of the oculomotor nerve?

Answer 20

1. Eye movement
2. Pupillary constriction
3. Accommodation
4. Eyelid opening

Question 21

What is the function of the trochlear nerve?

Answer 21

Eye movement (superior oblique muscle)

Question 22

What is the function of the trigeminal nerve?

Answer 22

1. Facial sensation

2. Mastication

Question 23

What is the function of the abducens nerve?

Answer 23

Eye movement (lateral rectus muscle)

Question 24

What is the function of the facial nerve?

Answer 24

1. Facial movements
2. Taste from anterior 2/3 of tongue (chorda tympani)
3. Lacrimation
4. Salivation
5. Eyelid closing
6. Auditory reflex

Question 25

What is the function of the vestibulocochlear nerve?

Answer 25

1. Hearing

2. Balance

Question 26

What is the function of the glossopharyngeal nerve?

Answer 26

1. Taste and sensation of posterior 1/3 of tongue
2. Monitoring of carotid body and sinus chemoreceptors and baroreceptors
3. Elevation of pharynx/larynx

Question 27

What is the function of the vagus nerve?

Answer 27

1. Taste from supraglottic region
2. Swallowing
3. Soft palate elevation
4. Speech
5. Cough reflex
6. Parasympathetic innervation to thoracoabdominal viscera
7. Monitoring aortic arch chemoreceptors and baroreceptors

Question 28

What is the function of the accessory nerve?

Answer 28

1. Head turning

2. Shoulder shrugging

Question 29

What is the function of the hypoglossal nerve?

Answer 29

Tongue movements.

Question 30

NEED TO INSERT STUFF ON ORGANISATION OF THE NERVOUS SYSTEM