Central Nervous System I

Question 0

The diencephalon is made up of these four parts:

Answer 0

thalamus
hypothalamus
epithalamus
subthalamus

Question 1

The brain stem consists of the: (three parts)

Answer 1

Midbrain (mesencephalon)
Pons (metencephalon)
Medulla (rhombencephalon)

Question 2

How many cervical nerves are there?

Answer 2

8

Question 3

How many thoracic nerves are there?

Answer 3

12

Question 4

How many lumbar nerves are there?

Answer 4

5

Question 5

How many sacral nerves are there?

Answer 5

5

Question 6

The cranial nerves that come from the cerebral hemisphere are numbers…

Answer 6

I and II.

Question 7

The cranial nerves that come from the brain stem are numbers…

Answer 7

III-X, and XII. XI comes from the cervical levels of the spinal cord.

Question 8

What are collections of nuclei called in the CNS? What about the PNS?

Answer 8

Nuclei, Ganglia

Question 9

Autonomic/motor/visceral ganglia consist of what two categories?

Answer 9

Sympathetic and parasympathetic

Question 10

Dorsal root ganglia consist of what kind of neurons?

Answer 10

Sensory

Question 11

The geniculate ganglion is found in this location and is made by this nerve:

Answer 11

the ear, CN VII

Question 12

The ear is the only place that you will find this kind of nerve structure.

Answer 12

What is bipolar nerves?

Question 13

Autonomic/motor/visceral ganglia are located where?

Answer 13

Outside the vertebral body.

Question 14

What kind of neurons are found in autonomic ganglia?

Answer 14

Multipolar

Question 15

What kind of neurons are found in dorsal root ganglia?

Answer 15

pseudounipolar

Question 16

Nerves of the autonomic system innervate what kind of tissue (name three)?

Answer 16

Smooth muscle, glands, cardiac muscle

Question 17

What is the source of preganglionic sympathetic nerve fibers?

Answer 17

lateral horn of gray matter

Question 18

Neurons that have cell bodies in the dorsal horn can send messages to the ventral horn. What are these neurons known as?

Answer 18

Interneurons

Question 19

The lateral horn is also known as the…

Answer 19

intermediolateral cell column

Question 20

Alpha motor neurons send messages to extrafusal skeletal muscles. What are they also known as?

Answer 20

Lower motor neurons

Question 21

Gamma motor neurons innervate what kind of muscles?

Answer 21

intrafusal or neuromuscular spindles

Question 22

Upper motor neurons start and end where?

Answer 22

CNS to CNS.

Question 23

Where do neurons which travel up the dorsal funiculus have their cell bodies?

Answer 23

dorsal root ganglia

Question 24

Does the lateral funiculus carry ascending sensory nerves, descending motor nerves, or both?

Answer 24

both