Chapter 1.8 (page 15)

Question 1

_________ is a connective tissue which surrounds the axon of the nerve.

Answer 1

Endoneurium

Question 2

Fascicles are wrapped by connective tissue called _________.

Answer 2

Perineurium

Question 3

The entire nerve is covered by this connective tissue called _________.

Answer 3

Epineurium

Question 4

The Peripheral Nervous System (PNS) has two types of nerves:

Answer 4

Cranial Nerves

Spinal Nerves

Question 5

TRUE or FALSE:

There are 31 spinal nerves and they supply all parts of the body.

Answer 5

FALSE.

They don’t supply the head.

Question 6

Provide the numbers:

_ pair/s of cervical spinal nerves
_ pair/s of thoracic nerves
_ pair/s of lumbar nerves
_ pair/s of sacral nerves
_ pair/s of coccygeal nerves

Answer 6

8

12

5

5

1

Question 7

Ventral roots contain somatic and autonomic motor fibres, which arise from the ______ and ______ horns respectfully. Dorsal roots contain sensory fibres, arising from sensory neurons in the ______________.

Answer 7

Anterior and Lateral

Dorsal Root Ganglia

Question 8

A _______ is a segment of skin supplied by either a cranial or spinal nerve.

Answer 8

Dermatome

Question 9

Cranial Nerve XII (Hypoglossal Nerve) functions to:

Answer 9

Control tongue movements

Question 10

This is a Cranial Nerve with Motor functions to aid in Head and Shoulder movements.

Answer 10

Accessory Nerve (CN XI)

Question 11

Cranial Nerve III is called _____________ and it controls _________________ (Motor).

Answer 11

Oculomotor Nerve

Eye movements

Question 12

Voice Production is one of the functions of the _______________ (CN).

Answer 12

Vagus Nerve (CN X)

(Other functions are increasing peristalsis and slowing heartbeat)

Question 13

The ______________ (CN) is responsible for chewing food.

Answer 13

Trigeminal Nerve (CN V)

Question 14

The Cranial Nerve VIII has the function of ___________ and ________________.

Answer 14

Hearing

Sense of Balance

(CN VIII is also termed as Vestibulocochlear Nerve)

Question 15

The ______________ (CN) is mainly responsible for secretion of saliva.

Answer 15

Glossopharyngeal Nerve (CN IX)

Question 16

TRUE or FALSE:

Cranial Nerve II, Optic Nerve, is responsible for moving the eye externally.

Answer 16

FALSE.

CN II is responsible for vision. CN VI is responsible for moving the eye externally (abduct).

Question 17

TRUE or FALSE:

Cranial Nerve VII has no motor function.

Answer 17

FALSE.

Facial Nerve (CN VII) is responsible for facial expressions.

Question 18

What are the two subdivisions of the Peripheral Nervous System (PNS)?

Answer 18

The Sensory (Afferent) Division

The Motor (Efferent) Division

Question 19

These are nerves that convey impulses from the skin, skeletal muscles and joints.

Answer 19

Somatic Afferent

Question 20

The Visceral Afferent nerves are responsibe for conveying impulses from _____________ to higher centers.

Answer 20

Visceral Organs

Question 21

The motor (efferent) division consists of nerve fibres that transmit impulses from the CNS to ____________.

Answer 21

Effector Organs

Question 22

The motor division of the PNS has two divisions, what are these?

Answer 22

Somatic Nervous System

Autonomic nervous system