Spinal Cord and Spinal Nerves questions with
verified answers
5 nerves of the brachial plexus: Ans✓✓✓1) Axillary nerve
2) Median nerve
3) Musculocutaneous nerve
4) Radial nerve
5) Ulnar nerve
5 regions of the spinal cord: Ans✓✓✓Cervical region
Thoracic region
Lumbar region
Sacral region (there is no sacral vertebrae!)
Coccygeal region
A ___________ child's spinal cord may extend to the level of L2
Ans✓✓✓child's
A _____________ spinal cord extends to about the level of L3
Ans✓✓✓newborn's
A reflex can precede sensation (a reflex does not need to involve the
brain) Ans✓✓✓sensation
(sense to interneuron to motor neuron)
,A tight _____________________ can compress the sciatic nerve
Ans✓✓✓piriformis muscle
All spinal nerves are what type of nerve? Ans✓✓✓mixed nerves
All the spinal nerves are what type of nerves? Ans✓✓✓mixed nerves
An __________ spinal cord typically terminates at the level of L1
Ans✓✓✓adult's
Arachnoid Ans✓✓✓deep to the dura and subdural space (a potential
space)
Atrophy of the arm muscles can be caused by a ______________ injury
in adulthood. Ans✓✓✓brachial plexus
Axillary nerve innervates what muscles? Ans✓✓✓the teres minor
muscle and the deltoid muscle.
Cauda Equina Ans✓✓✓(horse's tail) Composed of nerves that arise
from the conus medullaris and extend inferiorly
Central canal Ans✓✓✓runs the entire length of the spinal cord, is
contiguous with the brain and contains cerebrospinal fluid (CSF)
, Cervical enlargement Ans✓✓✓contains the neurons that innervate the
upper limbs
Cervical plexus is formed primarily by
spinal nerves ___________(#). Ans✓✓✓C1-C4
(C5 is not considered to part of this plexus, even though it contributes
some axons)
Chickenpox (varicella) virus is
acquired by the respiratory route and
causes what? Ans✓✓✓a head-to-toe rash in children.
Christopher Reeves became a very famous: Ans✓✓✓respirator-
dependent quadriplegic
Cloudy spinal fluid, like the specimen shown, is a sign of:
Ans✓✓✓white blood cells (pus).
conus medullaris Ans✓✓✓The tapering end of the spinal cord
Damage BELOW C3 also results in _____________, but the person can
still utilize their diaphragm for breathing via their intact phrenic nerves.
Ans✓✓✓quadriplegia
Damage to the spinal cord can lead to: Ans✓✓✓paralysis or death
verified answers
5 nerves of the brachial plexus: Ans✓✓✓1) Axillary nerve
2) Median nerve
3) Musculocutaneous nerve
4) Radial nerve
5) Ulnar nerve
5 regions of the spinal cord: Ans✓✓✓Cervical region
Thoracic region
Lumbar region
Sacral region (there is no sacral vertebrae!)
Coccygeal region
A ___________ child's spinal cord may extend to the level of L2
Ans✓✓✓child's
A _____________ spinal cord extends to about the level of L3
Ans✓✓✓newborn's
A reflex can precede sensation (a reflex does not need to involve the
brain) Ans✓✓✓sensation
(sense to interneuron to motor neuron)
,A tight _____________________ can compress the sciatic nerve
Ans✓✓✓piriformis muscle
All spinal nerves are what type of nerve? Ans✓✓✓mixed nerves
All the spinal nerves are what type of nerves? Ans✓✓✓mixed nerves
An __________ spinal cord typically terminates at the level of L1
Ans✓✓✓adult's
Arachnoid Ans✓✓✓deep to the dura and subdural space (a potential
space)
Atrophy of the arm muscles can be caused by a ______________ injury
in adulthood. Ans✓✓✓brachial plexus
Axillary nerve innervates what muscles? Ans✓✓✓the teres minor
muscle and the deltoid muscle.
Cauda Equina Ans✓✓✓(horse's tail) Composed of nerves that arise
from the conus medullaris and extend inferiorly
Central canal Ans✓✓✓runs the entire length of the spinal cord, is
contiguous with the brain and contains cerebrospinal fluid (CSF)
, Cervical enlargement Ans✓✓✓contains the neurons that innervate the
upper limbs
Cervical plexus is formed primarily by
spinal nerves ___________(#). Ans✓✓✓C1-C4
(C5 is not considered to part of this plexus, even though it contributes
some axons)
Chickenpox (varicella) virus is
acquired by the respiratory route and
causes what? Ans✓✓✓a head-to-toe rash in children.
Christopher Reeves became a very famous: Ans✓✓✓respirator-
dependent quadriplegic
Cloudy spinal fluid, like the specimen shown, is a sign of:
Ans✓✓✓white blood cells (pus).
conus medullaris Ans✓✓✓The tapering end of the spinal cord
Damage BELOW C3 also results in _____________, but the person can
still utilize their diaphragm for breathing via their intact phrenic nerves.
Ans✓✓✓quadriplegia
Damage to the spinal cord can lead to: Ans✓✓✓paralysis or death
