Lecture 1 - PNS

Question 1

What is a collection of nerve cell bodies in the PNS called?

Answer 1

Ganglion

Question 2

What are the 2 main types of neurones?

Answer 2

Multipolar and unipolar

Question 3

In multipolar neurones, where is the cell body found?

Answer 3

CNS

Question 4

Which 2 CNs are found in the forebrain?

Answer 4

CNI & CNII

Question 5

What are the functions of CNIII & CNIV?

Answer 5

Motor for both

Question 6

Which is the only CN to be found in the pons?

Answer 6

CNV

Question 7

Name the 3 CNs, along with their function, which can be found at the junction between the Pons and the Medulla

Answer 7

Abducent nerve (CNVI) - Motor
Facial nerve (CNVII) - Sensory and Motor
Vestibulocochlear nerve (CNVIII) - Sensory (special)

Question 8

Which is the only CN to be found at the spinal cord?

Answer 8

CNXI

Question 9

Where is the only place you would find spinal nerves?

Answer 9

Intervertebral foramina

Question 10

For spinal nerves, where do all motor axons pass from?

Answer 10

Anterior horn of the spinal cord

Question 11

Each spinal nerve pair supplies a body segment with sympathetic nerve supply to the skin and to the smooth muscle of arterioles.
True or False?

Answer 11

True

Question 12

What is a dermatome?

Answer 12

An area of skin supplied with sensory innervation from a single spinal nerve

Question 13

What is a myotome?

Answer 13

The skeletal muscles supplied with motor innervation from a single spinal nerve

Question 14

What does the cervical plexus innervate and which nerve roots are involved?

Answer 14

C1-C4; posterior scalp, neck and diaphragm

Question 15

What does the sacral plexus innervate and which nerve roots are involved?

Answer 15

L5-S4; lower limb, gluteal region and perineum

Question 16

For sympathetic outflow to the heart, where do presynaptic axons synapse?

Answer 16

T1 or cervical paravertebral ganglia

Question 17

For sympathetic outflow to the lungs, where do postsynaptic axons pass and how?

Answer 17

Through cardiopulmonary splanchnic nerves to the bronchiolar smooth muscle and mucous glands

Question 18

For sympathetic outflow to the kidney, where do presynaptic axons synapse?

Answer 18

Aorticorenal ganglion

Question 19

Via which nerves do presynaptic parasympathetic axons leave the CNS?

Answer 19

CN III, VII, IX & X and sacral spinal nerves