10.1

Question 1

The spinal cord is protected by what 3 things?

Answer 1

• vertebral column
• meninges
• CSF

Question 2

What are the 3 layers of meninges covering the spinal cord and brain?

Answer 2

• dura mater
• arachnoid mater
• pia mater

Question 3

Where does the spinal cord start and end?

Answer 3

the medulla oblongata to L2

Question 4

What serve as points of origin for the nerves to the limbs?

Answer 4

cervical and lumbar enlargements

Question 5

What are the roots of the nerves arising from the lumber, sacral, and coccygeal regions of the cord called?

Answer 5

cauda equina

Question 6

Spinal nerves are attached to the spinal cord by what root?

Answer 6

• posterior root
• anterior root

Question 7

What nerves contain both sensory and motor axons?

Answer 7

spinal nerves

Question 8

Gray matter is divided into

Answer 8

horns

Question 9

White matter is divided into?

Answer 9

columns

Question 10

Parts of the spinal cord include:

Answer 10

• Central canal
• Anterior, posterior, lateral gray horn
• Anterior, posterior, lateral white columns
• Sensory tracts
• Motor tracts

Question 11

How many pairs of spinal nerves are there?

Answer 11

31

Question 12

Name all the pairs of cranial nerves:

Answer 12

• 8 cervical
• 12 thoracic
• 5 lumbar
• 5 sacral
• 1 coccygeal

Question 13

Branches of spinal nerves form networks called?

Answer 13

Plexuses

Question 14

What nerves are called intercostal nerves?

Answer 14

T2-T11

Question 15

What are the 4 major plexuses?

Answer 15

• cervical
• brachial
• lumbar
• sacral

Question 16

What serves as a highway for nerve impulse conduction?

Answer 16

White matter

Question 17

What receives and integrates incoming and outgoing information and is a site for reflexes?

Answer 17

Gray matter

Question 18

What is a fast, involuntary action that occurs in response to a stimulus?

Answer 18

reflex

Question 19

What are the 5 basic components of a reflex arc?

Answer 19

1. Receptor
2. Sensory neuron
3. Integrating center
4. Motor neuron
5. Effector

Question 20

What are the 4 major parts of the brain?

Answer 20

1. Brain stem
2. Diencephalon
3. Cerebellum
4. Cerebrum

Question 21

What can a glucose deficiency of the brain produce?

Answer 21

dizziness, convulsions, and unconsciousness

Question 22

What is the purpose of the blood brain barrier?

Answer 22

Limits the passage of certain materials from the blood to the brain

Question 23

The brain is protected by what 3 things?

Answer 23

1. Cranial bones
2. Meninges
3. CSF

Question 24

Where is CSF formed?

Answer 24

choroid plexuses

Question 25

Where does CSF circulate through?

Answer 25

* Subarachnoid space * Central Canal

Question 26

What 3 things does CSF do?

Answer 26

1. shock absorber 2. delivers nutrients 3. removes waste

Question 27

The brain stem consists of what 3 things?

Answer 27

1. Medulla oblongata 2. Pons 3. Midbrain

Question 28

What is responsible for: regulating heart rate diameter of blood vessels breathing swallowing coughing vomiting sneezing hiccupping

Answer 28

Medulla Oblongata

Question 29

What is responsible for: relaying impulses for voluntary skeletal movements from the cerebral cortex to the cerebellum

Answer 29

Pons

Question 30

What conveys motor impulses, sends sensory impulses, and mediates auditory and visual reflexes

Answer 30

The midbrain

Question 31

What is a netlike arrangement of gray and white matter extending throughout the brainstem that alerts the cerebral cortex to incoming sensory signals and helps regulate muscle tone?

Answer 31

Reticular formation

Question 32

The Diencephalon consists of what 3 things?

Answer 32

1. Thalamus 2. Hypothalamus 3. Pineal gland

Question 33

What is the largest part of the brain?

Answer 33

Cerebrum

Question 34

What are the 4 cerebral lobes?

Answer 34

1. Frontal 2. Parietal 3. Temporal 4. Occipital

Question 35

Are spinal nerves part of the PNS or CNS?

Answer 35

PNS