Question 1

The two main routes for motor information traveling down the spinal cord are _____ pathways and _____ pathways.

Accepted Answer

The two main routes for motor information traveling down the spinal cord are the direct pathways (which include the corticospinal tracts) and the indirect pathways (which include tracts such as the rubrospinal tract). These pathways are responsible for voluntary and involuntary movements.

Question 2

The part of the spinal cord indicated by the line is the _____

Accepted Answer

The answer of The part of the spinal cord indicated...

Question 3

The two main routes for sensory information traveling up the spinal cord to the brain are _____ tracts and _____ columns.

Accepted Answer

The two main routes for sensory information traveling up the spinal cord to the brain are the spinothalamic tracts and posterior columns. The spinothalamic tract carries information about pain, temperature, and crude touch, while the posterior columns carry information about vibration, proprioception, and fine touch.

Question 4

The meninx indicated by the line is the _____.

Accepted Answer

The answer of The meninx indicated by the line is...

Question 5

Motor neurons that supply skeletal muscles have cell bodies in _____ gray horns of the spinal cord, and their axons exit the cord via a/an _____ root.

Accepted Answer

Motor neurons that supply skeletal muscles have their cell bodies in the anterior (ventral) gray horns of the spinal cord, and their axons exit the cord via the anterior (ventral) root.

Question 6

The meninx indicated by the line is the _____.

Accepted Answer

The answer of The meninx indicated by the line is...

Question 7

Cerebrospinal fluid is found between two layers of the meninges, in a space called the _____.

Accepted Answer

Cerebrospinal fluid (CSF) is found in the subarachnoid space, which is located between the arachnoid mater and the pia mater, two of the three layers of the meninges that surround the brain and spinal cord.

Question 8

The meninx indicated by the line is the _____.

Accepted Answer

The answer of The meninx indicated by the line is...

Question 9

A dermatome is an area of skin that provides sensory input to the CNS via one pair of spinal nerves or the trigeminal (V) nerve.

Accepted Answer

A dermatome is indeed an area of skin innervated by the sensory fibers of a single spinal nerve or the trigeminal nerve, which is responsible for sensation in the face.

Question 10

Which of the following contain cell bodies of sensory neurons?

Accepted Answer

Posterior (dorsal) root ganglia contain the cell bodies of sensory neurons, which transmit sensory information from the periphery to the central nervous system.

Question 11

The _____ plexus serves the skin and muscles of the head, neck, and superior part of the shoulders and chest.

Accepted Answer

The cervical plexus serves the skin and muscles of the head, neck, and superior part of the shoulders and chest.

Question 12

There are _____ pairs of spinal nerves, consisting of the following groups: _____ pairs of cervical, _____ pairs of thoracic, _____ pairs of lumbar, _____ pairs of sacral, and _____ pair of coccygeal spinal nerves.

Accepted Answer

The human body has 31 pairs of spinal nerves, which are divided into 8 pairs of cervical, 12 pairs of thoracic, 5 pairs of lumbar, 5 pairs of sacral, and 1 pair of coccygeal nerves.

Question 13

The structure(s) indicated by the lines is/are the _____

Accepted Answer

The answer of The structure(s) indicated by the lines is/are...

Question 14

The part of the spinal cord indicated by the line is the _____

Accepted Answer

The answer of The part of the spinal cord indicated...

Question 15

Which of the following is NOT a branch of a spinal nerve?

Accepted Answer

The spinal nerve branches into the dorsal ramus, ventral ramus, meningeal branch, and rami communicantes. There is no lateral ramus branch, making option C the correct answer.

Quiz 17: The Spinal Cord and the Spinal Nerves

The two main routes for motor information traveling down the spinal cord are _ pathways and _ pathways.

The part of the spinal cord indicated by the line is the _____

The two main routes for sensory information traveling up the spinal cord to the brain are _ tracts and _ columns.

The meninx indicated by the line is the _____.

Motor neurons that supply skeletal muscles have cell bodies in _ gray horns of the spinal cord, and their axons exit the cord via a/an _ root.

The meninx indicated by the line is the _____.

Cerebrospinal fluid is found between two layers of the meninges, in a space called the _____.

The meninx indicated by the line is the _____.

A dermatome is an area of skin that provides sensory input to the CNS via one pair of spinal nerves or the trigeminal (V) nerve.

Which of the following contain cell bodies of sensory neurons?

The _____ plexus serves the skin and muscles of the head, neck, and superior part of the shoulders and chest.

There are ___ pairs of spinal nerves, consisting of the following groups: _ pairs of cervical, _ pairs of thoracic, _ pairs of lumbar, _ pairs of sacral, and ___ pair of coccygeal spinal nerves.

The structure(s) indicated by the lines is/are the _____

The part of the spinal cord indicated by the line is the _____

Which of the following is NOT a branch of a spinal nerve?