Question 1

The motor root of a spinal nerve is also referred to as the

Accepted Answer

A) afferent root. 
B) dorsal root. 
C) posterior root. 
D) ventral root. 
E) sensory root. 
A) afferent root. 
B) dorsal root. 
C) posterior root. 
D) ventral root. 
E) sensory root.

Question 2

Reflexes function in

Accepted Answer

A) removing the body from painful stimuli. 
B) keeping the body from falling. 
C) maintaining blood pressure. 
D) maintaining blood CO2 levels. 
E) All of these choices are correct. 
A) removing the body from painful stimuli. 
B) keeping the body from falling. 
C) maintaining blood pressure. 
D) maintaining blood CO2 levels. 
E) All of these choices are correct.

Question 3

Doctor Johansson wants to test a patient's reflexes by briskly striking the patellar tendon with a reflex hammer.Which reflex is Dr.Johansson testing?

Accepted Answer

A) the Golgi tendon reflex. 
B) the withdrawal reflex. 
C)  the knee-jerk reflex. 
D) the crossed extensor reflex. 
E) reciprocal innervation. 
A) the Golgi tendon reflex. 
B) the withdrawal reflex. 
C)  the knee-jerk reflex. 
D) the crossed extensor reflex. 
E) reciprocal innervation.

Question 4

The epineurium

Accepted Answer

A) surrounds nerve cell bodies. 
B) surrounds individual axons and their Schwann cells. 
C) bundles axons into fascicles. 
D) bundles fascicles into nerves. 
E) bundles fascicles into axons. 
A) surrounds nerve cell bodies. 
B) surrounds individual axons and their Schwann cells. 
C) bundles axons into fascicles. 
D) bundles fascicles into nerves. 
E) bundles fascicles into axons.

Question 5

Which of the following events in a stretch reflex occurs last?

Accepted Answer

A) alpha motor neurons transmit action potentials to muscle causing contraction 
B) muscle spindle detects stretch of muscle 
C) afferent neurons conduct action potentials to the spinal cord 
D) afferent neurons synapse with alpha motor neurons 
E) muscle is stretched 
A) alpha motor neurons transmit action potentials to muscle causing contraction 
B) muscle spindle detects stretch of muscle 
C) afferent neurons conduct action potentials to the spinal cord 
D) afferent neurons synapse with alpha motor neurons 
E) muscle is stretched

Question 6

Reflex arcs

Accepted Answer

A) are capable of receiving a stimulus and yielding a response. 
B) are the basic structural units of the nervous system. 
C) occur primarily in the cerebral cortex of the brain. 
D) involve inhibitory neurons. 
E) do not involve the spinal cord. 
A) are capable of receiving a stimulus and yielding a response. 
B) are the basic structural units of the nervous system. 
C) occur primarily in the cerebral cortex of the brain. 
D) involve inhibitory neurons. 
E) do not involve the spinal cord.

Question 7

Match the nerve with the appropriate description.
-obturator nerve

Accepted Answer

A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

Question 8

Adduction of the thigh involves the

Accepted Answer

A) peroneal nerve. 
B) femoral nerve. 
C) obturator nerve. 
D) pudendal nerve. 
E) tibial nerve. 
A) peroneal nerve. 
B) femoral nerve. 
C) obturator nerve. 
D) pudendal nerve. 
E) tibial nerve.

Question 9

Match the nerve with the appropriate description.
-tibial nerve

Accepted Answer

A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

Question 10

Match the nerve with the appropriate description.
-femoral nerve

Accepted Answer

A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas,sartorius,and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

Question 11

Place the following parts of a reflex arc in the correct order beginning with the sensory receptor. (1)motor neuron
(2)interneuron
(3)effector
(4)sensory neuron
(5)sensory receptor

Accepted Answer

A) 5,1,2,3,4 
B) 5,3,2,4,1 
C) 5,4,3,2,1 
D) 5,2,3,4,1 
E) 5,4,2,1,3 
A) 5,1,2,3,4 
B) 5,3,2,4,1 
C) 5,4,3,2,1 
D) 5,2,3,4,1 
E) 5,4,2,1,3

Question 12

If you pinch your index finger in a door,pain sensations are carried via the ____ nerve.

Accepted Answer

A) radial 
B) median 
C) axillary 
D) musculocutaneous 
E) ulnar 
A) radial 
B) median 
C) axillary 
D) musculocutaneous 
E) ulnar

Question 13

A collapsed intervertebral foramen could affect all of the following spinal nerves EXCEPT

Accepted Answer

A)  C2-C8 
B)  T1-T12 
C)  L1-L5 
D)  C1 
A)  C2-C8 
B)  T1-T12 
C)  L1-L5 
D)  C1

Question 14

-What does "D" represent?

Accepted Answer

A) spinal nerves 
B) conus medullaris 
C) cervical enlargement 
D) filium terminale 
E) cauda equina 
A) spinal nerves 
B) conus medullaris 
C) cervical enlargement 
D) filium terminale 
E) cauda equina

Question 15

Dermatomal maps are important clinically because they

Accepted Answer

A) can be used to check for motor function. 
B) locate the position of cranial nerves. 
C) can be used to help locate nerve damage. 
D) indicate what muscles are innervated by each spinal nerve. 
E) can be used to detect cranial nerve damage. 
A) can be used to check for motor function. 
B) locate the position of cranial nerves. 
C) can be used to help locate nerve damage. 
D) indicate what muscles are innervated by each spinal nerve. 
E) can be used to detect cranial nerve damage.

Question 16

Which of the following is false?

Accepted Answer

A) The dorsal root of the spinal cord conveys sensory (afferent)nerve impulses to the spinal cord. 
B) The posterior horn of the cord contains the cell bodies of motor neurons. 
C) The ventral root is formed by the axons of neurons in the lateral and anterior horns. 
D) The dorsal and ventral roots unite to form spinal nerves. 
E) The ventral root of the spinal cord conveys motor (efferent)nerve impulses away from the spinal cord. 
A) The dorsal root of the spinal cord conveys sensory (afferent)nerve impulses to the spinal cord. 
B) The posterior horn of the cord contains the cell bodies of motor neurons. 
C) The ventral root is formed by the axons of neurons in the lateral and anterior horns. 
D) The dorsal and ventral roots unite to form spinal nerves. 
E) The ventral root of the spinal cord conveys motor (efferent)nerve impulses away from the spinal cord.

Question 17

Match the term with the correct definition.
-pia mater

Accepted Answer

A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum 
A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum

Question 18

Cutaneous sensory distribution of a spinal nerve can be mapped as a ________.

Accepted Answer

The answer of Cutaneous sensory distribution of a spinal nerve...

Question 19

The sciatic nerve is composed of the

Accepted Answer

A) femoral nerve and the tibial nerve. 
B) tibial nerve and the common fibular nerve. 
C) femoral nerve and the obturator nerve. 
D) common fibular nerve and the pudendal nerve. 
E) superior gluteal and inferior gluteal. 
A) femoral nerve and the tibial nerve. 
B) tibial nerve and the common fibular nerve. 
C) femoral nerve and the obturator nerve. 
D) common fibular nerve and the pudendal nerve. 
E) superior gluteal and inferior gluteal.

Question 20

Improper use of crutches could cause compression of the _____ nerve.

Accepted Answer

A) axillary 
B) radial 
C) musculocutaneous 
D) ulnar 
E) median 
A) axillary 
B) radial 
C) musculocutaneous 
D) ulnar 
E) median

Exam 12: Spinal Cord and Spinal Nerves

The motor root of a spinal nerve is also referred to as the

Reflexes function in

Doctor Johansson wants to test a patient's reflexes by briskly striking the patellar tendon with a reflex hammer.Which reflex is Dr.Johansson testing?

The epineurium

Which of the following events in a stretch reflex occurs last?

Reflex arcs

Match the nerve with the appropriate description. -obturator nerve

Adduction of the thigh involves the

Match the nerve with the appropriate description. -tibial nerve

Match the nerve with the appropriate description. -femoral nerve

Place the following parts of a reflex arc in the correct order beginning with the sensory receptor. (1)motor neuron (2)interneuron (3)effector (4)sensory neuron (5)sensory receptor

If you pinch your index finger in a door,pain sensations are carried via the ____ nerve.

A collapsed intervertebral foramen could affect all of the following spinal nerves EXCEPT

-What does "D" represent?

Dermatomal maps are important clinically because they

Which of the following is false?

Match the term with the correct definition. -pia mater

Cutaneous sensory distribution of a spinal nerve can be mapped as a ________.

The sciatic nerve is composed of the

Improper use of crutches could cause compression of the _____ nerve.

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