Nervous System

Question 1

Two main parts of the Nervous system

Answer 1

1. Central Nervous System
2. Peripheral Nervous system

Question 2

Consists of the brain and spinal cord

Answer 2

Central Nervous System

Question 3

Consists of 12 pairs of cranial nerves and 31 pairs of spinal nerves and ganglia

Answer 3

Peripheral Nervous System

Question 4

which controls voluntary activities

Answer 4

Somatic Nervous system

Question 5

which controls involuntary activities.

Answer 5

Autonomic Nervous system

Question 6

Major site for:
• Processing information
• Initiating responses
• Integrating mental processes

Answer 6

Central Nervous system

Question 7

is composed of large numbers of nerve cells and their processes neurons.

Answer 7

Central nervous system

Question 8

What type of tissue is the CNS supported by

Answer 8

Neuroglia

Question 9

nerve cell and all its processes

Answer 9

Neuron

Question 10

Types of processes in the neuron

Answer 10

1. Dendrites
2. Axon

Question 11

are the short processes of the cell body

Answer 11

Dendrites

Question 12

is the longest process of the cell body

Answer 12

Axon

Question 13

consists of nerve cells embedded in neuroglia
• Located centrally
• H-shaped
Consists of unmyelinated nerve cell bodies

Answer 13

Gray Matter

Question 14

consists of nerve fibers (axons)
embedded in neuroglia.
• Surrounds the gray matter peripherally
• Myelinated axons

Answer 14

White Matter

Question 15

made up of bundles of nerve fibers (axons) supported by delicate areolar tissue
*Grayish White cord

Answer 15

PNS (Peripheral Nervous System)

Question 16

All the nerves are distributed in the head and neck except the?

Answer 16

Vagus Nerve

Question 17

Enumerate the 12 cranial nerves

Answer 17

I. Olfactory VII. Facial
II. Optic VIII. Vestibulocochlear
III. Oculomotor IX. Glossopharyngeal
IV. Trochlear X. Vagus
V. Trigeminal XI. Accessory
VI. Abducens. XII. Hypoglossal

Question 18

leave the spinal cord and pass through intervertebral foramina in the vertebral column

Answer 18

Spinal Nerve

Question 19

how many spinal nerves are there

Answer 19

31

Question 20

How many spinal nerves are there in the cervical area

Answer 20

8

Question 21

How many spinal nerves are there in the thoracic area

Answer 21

12

Question 22

How many spinal nerves are there in the lumbar area

Answer 22

5

Question 23

How many spinal nerves are there in the sacral area

Answer 23

5

Question 24

How many spinal nerves are there in the coccygeal area

Answer 24

1

Question 25

the **spinal nerve roots** are **short and run almost horizontally**

Answer 25

Upper Cervical Region

Question 26

• Roots of the lumbar and sacral nerves below the level of the termination of the cord form a vertical bundle of nerves that resembles a **horse's tail** and is called the?

Answer 26

Cauda Equina

Question 27

Consists of bundles of nerve fibers carrying nerve **impulses away from the central nervous system** (Efferent Fibers)

Answer 27

Anterior Root (Ventral)

Question 28

Goes to the **skeletal muscle** and cause them to **contract** are called?

Answer 28

Motor Fibers

Question 29

consists of bundles of nerve fibers that carry **impulses towards the central nervous system** (Afferent Root)

Answer 29

Posterior Root

Question 30

**conveys information** about sensations of touch, pain, temperature, and vibrations

Answer 30

Sensory Fibers

Question 31

Cell bodies of these nerve fibers are situated in a **swelling on the posterior root** called the?

Answer 31

Posterior root ganglion

Question 32

**Mixture of motor and sensory fibers** • Large anterior ramus and a smaller posterior ramus.

Answer 32

Spinal Nerve

Question 33

passes posteriorly around the vertebral column to **supply the muscles and skin of the back**

Answer 33

Posterior Ramus

Question 34

continues anteriorly to **supply the muscles and skin over the anterolateral body wall** and all the muscles and skin of the limbs

Answer 34

Anterior Ramus

Question 35

A small nerve that **supplies the vertebrae and coverings of spinal cord**

Answer 35

Meningeal branch

Question 36

Interdigitations of nerves

Answer 36

Plexus

Question 37

4 major plexuses

Answer 37

1. Cervical Plexus (C1-C4) 2. Brachial Plexus (C5-T1) 3. Lumbar Plexus (L1-L4) 4. Sacral Plexus (L4-L5 and S1-S4) Coccygeal Plexus (S5-Co)

Question 38

are found at the **root of the upper limbs**

Answer 38

Cervical and Brachial plexuses

Question 39

are found at the **root of the lower limbs.**

Answer 39

Lumbar and sacral plexus

Question 40

is the part of the nervous system concerned with the **innervation of involuntary structures**

Answer 40

Autonomic Nervous System

Question 41

Two parts of the Autonomic Nervous System

Answer 41

Parasympathetic Sympathetic

Question 42

prepare the **body for an emergency** • It accelerates the heart rate, causes constriction of the peripheral blood vessels, and raises the blood pressure.

Answer 42

Sympathetic NS

Question 43

**Aim at conserving and restoring energy** • Slow the heart rate, increase peristalsis of the intestine and glandular activity, and open the sphincters.

Answer 43

Parasympathetic NS