A&P - Chapter 20 (Part 1)

Question 1

What are the 3 organs of the nervous system?

Answer 1

1. Brain
2. Spinal cord
3. Nerves

Question 2

What are 2 types of nerves?

Answer 2

1. Cranial

2. Spinal

Question 3

What are 4 sensory organs?

Answer 3

1. Eyes
2. Ears
3. Specialized sensory organs
4. Free nerve endings
   - eg. skin

Question 4

What are 2 parts of the CNS?

Answer 4

1. Brain

2. Spinal cord

Question 5

What is the CNS protected by?

Answer 5

By structures of the skeletal system and integumentary

Question 6

What are 2 examples of bones that cover the CNS?

Answer 6

1. Cranial bones
   - brain
2. Vertebrae
   - spinal cord

Question 7

What is the inner covering for protection of the CNS?

Answer 7

Meninges

Question 8

What is so important about the brain stem?

Answer 8

Necessary for survival

- everyone/animal has it

Question 9

Meninges

Answer 9

A tube like covering around the spinal cord

Question 10

What does the meninges line?

Answer 10

The vertebral foreman of each vertebra surrounding it

- extend around the brain for full closure

Question 11

What are the 3 layers of the meninges?

Answer 11

1. Dura mater
2. Arachnoid mater
3. Pia mater

Question 12

What is the outer most layer of the meninges?

Answer 12

Dura mater

Question 13

Dura mater

Answer 13

Strong white fibrous tissue that lines the vertebral canal

- outermost layer

Question 14

What is the middle layer of meninges?

Answer 14

Arachnoid mater

Question 15

Arachnoid mater

Answer 15

Delicate cushioning layer

Question 16

What does the arachnoid mater contain?

Answer 16

Fluid

- CSF

Question 17

What is the brain stem responsible for?

Answer 17

Breathing

Question 18

What is the bottom layer of the meninges?

Answer 18

Pia mater

Question 19

Pia mater

Answer 19

Transparent layer that adheres to the surface of the brain and spinal cord

Question 20

What does pia mater form?

Answer 20

Delicate filum terminal

Question 21

What is another word for dura mater?

Answer 21

Hard mother

Question 22

What is another word for arachnoid mater?

Answer 22

Spider wed mother

Question 23

What is another word for pia mater?

Answer 23

Delicate mother

Question 24

What are the 3 inward extensions of the dura matter?

Answer 24

1. Flax cerebri
2. Flax cerebelli
3. Tentorium cerebelli

Question 25

Where does the flax cerebri project?

Answer 25

Downward

Question 26

What does the flax cerebri create?

Answer 26

A partition between the two cerebral hemispheres

Question 27

What does the flax cerebelli separate?

Answer 27

The two hemispheres of the cerebellum

Question 28

What does the tentorium cerebelli separate?

Answer 28

The cerebellum from the cerebrum

Question 29

What does the tenrorium cerebelli form?

Answer 29

A tent like covering over the cerebellum

Question 30

Flax

Answer 30

Sickle

Question 31

Epidural space

Answer 31

Immediately outside the dura mater, inside the vertebrae/skull

Question 32

Subdural space

Answer 32

Between dura and arachnoid mater

Question 33

What does the subdural space contain?

Answer 33

Serous fluid

Question 34

Subarachnoid space

Answer 34

Between arachnoid and pia mater

Question 35

What does subarachnoid space contain?

Answer 35

A significant amount of cerebrospinal fluid

Question 36

CSF

Answer 36

Cerebrospinal fluid