Spinal Cord And Nerves

Question 1

What is the primary function of the spinal cord?

Answer 1

To transmit signals between the brain and the rest of the body.

Question 2

True or False: The spinal cord is part of the central nervous system.

Answer 2

True

Question 3

What are the two main types of spinal nerves?

Answer 3

Cervical and lumbar spinal nerves.

Question 4

Fill in the blank: The spinal cord is protected by the _____ vertebrae.

Answer 4

vertebral

Question 5

How many pairs of spinal nerves are there in the human body?

Answer 5

31 pairs

Question 6

What is the term for the lower tapered end of the spinal cord?

Answer 6

Conus medullaris

Question 7

Which part of the spinal cord is responsible for reflex actions?

Answer 7

The spinal reflex arc

Question 8

Name the three protective membranes that surround the spinal cord.

Answer 8

Dura mater, arachnoid mater, and pia mater.

Question 9

What is the role of the dorsal root of a spinal nerve?

Answer 9

To carry sensory information to the spinal cord.

Question 10

True or False: The spinal cord extends from the base of the skull to the lumbar region.

Answer 10

True

Question 11

What is the function of the ventral root of a spinal nerve?

Answer 11

To carry motor commands from the spinal cord to the muscles.

Question 12

Which type of neuron transmits sensory information?

Answer 12

Afferent neurons

Question 13

What is the cauda equina?

Answer 13

A bundle of spinal nerves and nerve roots located below the conus medullaris.

Question 14

What is the significance of the cervical enlargement?

Answer 14

It supplies nerves to the upper limbs.

Question 15

How many cervical spinal nerves are there?

Answer 15

8 cervical spinal nerves

Question 16

Fill in the blank: The _____ is the outermost layer of the meninges.

Answer 16

dura mater

Question 17

Which spinal cord segment is associated with the lower limbs?

Answer 17

Lumbar and sacral segments

Question 18

What is the central canal of the spinal cord filled with?

Answer 18

Cerebrospinal fluid (CSF)

Question 19

True or False: The spinal cord is responsible for voluntary movements only.

Answer 19

False

Question 20

What is the difference between gray matter and white matter in the spinal cord?

Answer 20

Gray matter contains neuron cell bodies, while white matter contains myelinated axons.

Question 21

What is the role of the intervertebral discs?

Answer 21

To provide cushioning and support between vertebrae.

Question 22

How does the spinal cord communicate with peripheral nerves?

Answer 22

Through spinal nerves that branch off from the spinal cord.

Question 23

What is the function of the spinal reflex?

Answer 23

To allow for quick responses to stimuli without direct involvement of the brain.

Question 24

Which spinal nerves are associated with the brachial plexus?

Answer 24

C5 to T1 spinal nerves

Question 25

What is the role of the sympathetic nervous system in relation to the spinal cord?

Answer 25

It prepares the body for 'fight or flight' responses.

Question 26

What does the term 'dermatome' refer to?

Answer 26

An area of skin supplied by a single spinal nerve root.

Question 27

Fill in the blank: The _____ reflex is a protective reflex that withdraws a limb from a painful stimulus.

Answer 27

withdrawal

Question 28

What is the primary neurotransmitter used in motor neuron communication?

Answer 28

Acetylcholine

Question 29

How many thoracic spinal nerves are there?

Answer 29

12 thoracic spinal nerves

Question 30

True or False: The spinal cord continues to grow in length throughout adulthood.

Answer 30

False

Question 31

What does the term 'spinal tap' refer to?

Answer 31

A procedure to collect cerebrospinal fluid from the spinal canal.

Question 32

Which part of the nervous system is primarily responsible for voluntary muscle movement?

Answer 32

Somatic nervous system

Question 33

What is the role of the autonomic nervous system?

Answer 33

To regulate involuntary bodily functions.

Question 34

What are the two main divisions of the autonomic nervous system?

Answer 34

Sympathetic and parasympathetic nervous systems.

Question 35

Fill in the blank: The spinal cord is approximately _____ cm long in adults.

Answer 35

45

Question 36

What is the function of the cerebrospinal fluid?

Answer 36

To cushion and protect the brain and spinal cord.

Question 37

What is the role of the lumbar plexus?

Answer 37

To supply nerves to the lower abdomen, pelvis, and lower limbs.

Question 38

True or False: The spinal cord does not have the ability to regenerate after injury.

Answer 38

True

Question 39

What is the primary purpose of spinal reflexes?

Answer 39

To enable quick responses to stimuli.

Question 40

How many sacral spinal nerves are there?

Answer 40

5 sacral spinal nerves

Question 41

What is the significance of the thoracic enlargement?

Answer 41

It supplies nerves to the trunk and upper limbs.

Question 42

What is the anatomical term for the 'neck' region of the spinal cord?

Answer 42

Cervical region

Question 43

Fill in the blank: The _____ is the part of the spinal cord that contains the cell bodies of sensory neurons.

Answer 43

dorsal root ganglion

Question 44

What is the role of the spinal cord in homeostasis?

Answer 44

To coordinate and regulate bodily functions.

Question 45

True or False: Each spinal nerve contains both sensory and motor fibers.

Answer 45

True