Question 1

Alpha adrenergic receptors

Accepted Answer

A)   Increase IP3 in the target cells
B)   Increase cGMP in the target cells
C)   Decreases cGMP in the target cells
D)   Increase cAMP in the target cells
E)   Decrease cAMP in the target cellsF) None of the above
G) B) and C)

Question 2

Atropine blocks

Accepted Answer

A)   Pre-ganglionic parasympathetic neurotransmission
B)   Pre-ganglionic sympathetic neurotransmission
C)   Post-ganglionic parasympathetic neurotransmission
D)   Post-ganglionic sympathetic neurotransmission
E)   Post-gagnlionic sympathetic neurotransmission only to sweat glandsF) A) and E)
G) B) and D)

Question 3

Muscarinic receptors are blocked by

Accepted Answer

A)   Acetylcholine
B)   Norepinephrine
C)   Propanalol
D)   Phenoxybenzamine
E)   AtropineF) B) and E)
G) A) and C)

Question 4

Beta receptors are blocked by

Accepted Answer

A)   Acetylcholine
B)   Norepinephrine
C)   Propanalol
D)   Phenoxybenzamine
E)   AtropineF) C) and E)
G) A) and D)

Question 5

The neurotransm itter used by m ost postganglionic fibers is

Accepted Answer

A)   Aceytylcholine for sympathetic fibers, norepinephrine for parasympathetic fibers
B)   Norepinephrine for sympathetic fibers, acetylcholine for parasympathetic fibers
C)   Acetylcholine for both sympathetic and parasympathetic fibers
D)   Norepinephrine for both sympathetic and parasympathetic fibers
E)   Dopamine for sympathetic fibers and acetylcholine for parasympathetic fibersF) A) and B)
G) A) and E)

Question 6

Dilation of the pupil is mediated by

Accepted Answer

A)   Parasympathetic output from the Edinger-Westphal nucleus
B)   Sympathetic output from the superior celiac ganglion
C)   Sympathetic output from the vagus nerve
D)   Parasympathetic output from the vagus nerve
E)   Sympathetic output from the inferior mesenteric ganglionF) None of the above
G) A) and B)

Question 7

Constriction of the right pupil caused by light in the left eye is called the

Accepted Answer

A)   Pupillary light reflex
B)   Consensual pupillary light reflex
C)   Edinger-W estphal reflex
D)   Accommodation reflex
E)   Bright light reflexF) A) and B)
G) C) and D)

Question 8

Beta adrenergic receptors

Accepted Answer

A)   Increase IP3 in the target cells
B)   Increase cGMP in the target cells
C)   Decreases cGMP in the target cells
D)   Increase cAM P in the target cells
E)   Decrease cAMP in the target cellsF) A) and D)
G) A) and C)

Question 9

Stretch of the urinary bladder

Accepted Answer

A)   Relaxes the internal urinary sphincter muscle through parasympathetic fibers from T10-L2
B)   Relaxes the internal but constricts the external urinary sphincter
C)   Relaxes the internal urinary sphincter muscle through parasympthetic fibers from S1-S3
D)   Constricts the external urinary sphincter muscle by sympathetics from T10-L2
E)   Constricts the detrusor muscle by sympathetics from T10-L2F) B) and E)
G) A) and C)

Question 10

The part of the nervous system that promotes restoration of metabolic reserves is the

Accepted Answer

A)   Enteric nervous system
B)   Parasympathetic nervous system
C)   Sympathetic nervous system
D)   Brainstem
E)   MedullaF) A) and D)
G) B) and D)

Question 11

The neurotransm itter used by preganglionic fibers is

Accepted Answer

A)   Aceytylcholine for sympathetic fibers, norepinephrine for parasympathetic fibers
B)   Norepinephrine for sympathetic fibers, acetylcholine for parasympathetic fibers
C)   Acetylcholine for both sympathetic and parasympathetic fibers
D)   Norepinephrine for both sympathetic and parasympathetic fibers
E)   Dopamine for sympathetic fibers and acetylcholine for parasympathetic fibersF) A) and B)
G) D) and E)

Question 12

Pre-ganglionic sympathetic motor neurons are located mainly in the

Accepted Answer

A)   Medulla
B)   Pons
C)   Thoraco-lum bar spinal cord
D)   Sacral spinal cord
E)   A and C are correctF) All of the above
G) A) and B)

Question 13

W hich of the following is NOT true of the parasympathetic system?

Accepted Answer

A)   It has short preganglionic fibers and long post ganglionic fibers
B)   It uses acetylcholine at both preganglionic and postganglionic synapses
C)   The motor neurons originate in the cranial and sacral part of the central nervous system
D)   The preganglionic receptors are nicotinic acetylcholine receptors
E)   The postganglionic receptors are generally muscarinic acetylcholine receptorsF) A) and E)
G) C) and E)

Question 14

Contraction of the detrusor muscle is

Accepted Answer

A)   Promoted by stretch receptors in the wall and inhibited by volitional control
B)   Promoted by stretch receptors in the wall and inhibited by sympathetics in the pelvic nerve
C)   Activated by stretch and inhibited by sympathetics in the hypogastric nerve
D)   Entirely volitional
E)   Stimulated by both sympathetic and parasympathetic systemsF) B) and C)
G) A) and E)

Question 15

In the pupillary light reflex, light is sensed by

Accepted Answer

A)   Rod cells
B)   Cone cells
C)   Bipolar cells
D)   Intrinsically photosensitive retinal ganglion cells
E)   Retinal pigmented epitheliumF) All of the above
G) C) and E) D

Question 16

Which of the following is NOT a prevertebral ganglion?

Accepted Answer

A)   Celiac ganglion
B)   Superior mesenteric ganglion
C)   Inferior mesenteric ganglion
D)   Adrenal medulla
E)   None of the aboveF) A) and D)
G) C) and D) D

Question 17

The part of the nervous system that prepares for emergency action is the

Accepted Answer

A)   Enteric nervous system
B)   Parasympathetic nervous system
C)   Sympathetic nervous system
D)   Brainstem
E)   MedullF) C) and D)
G) B) and D)

Question 18

Bright light in the right eye

Accepted Answer

A)   Reflexly shrinks the pupil in the left eye
B)   Shifts vision to the rods in the right eye
C)   Reflexly shrinks the pupil in the right eye
D)   Shifts vision to the cones in the left eye
E)   Both A and C are correctF) C) and D)
G) All of the above A

Exam 33: Autonomic Nervous System

Alpha adrenergic receptors

Correct Answer
verified

Atropine blocks

Correct Answer
verified

Muscarinic receptors are blocked by

Correct Answer
verified

Beta receptors are blocked by

Correct Answer
verified

The neurotransm itter used by m ost postganglionic fibers is

Correct Answer
verified

Dilation of the pupil is mediated by

Correct Answer
verified

Constriction of the right pupil caused by light in the left eye is called the

Correct Answer
verified

Beta adrenergic receptors

Correct Answer
verified

Stretch of the urinary bladder

Correct Answer
verified

The part of the nervous system that promotes restoration of metabolic reserves is the

Correct Answer
verified

The neurotransm itter used by preganglionic fibers is

Correct Answer
verified

Pre-ganglionic sympathetic motor neurons are located mainly in the

Correct Answer
verified

W hich of the following is NOT true of the parasympathetic system?

Correct Answer
verified

Contraction of the detrusor muscle is

Correct Answer
verified

In the pupillary light reflex, light is sensed by

Correct Answer
verified
D

Which of the following is NOT a prevertebral ganglion?

Correct Answer
verified
D

The part of the nervous system that prepares for emergency action is the

Correct Answer
verified

Bright light in the right eye

Correct Answer
verified
A

Exam 33: Autonomic Nervous System

Alpha adrenergic receptors

Correct AnswerverifiedShow Answer

Atropine blocks

Correct AnswerverifiedShow Answer

Muscarinic receptors are blocked by

Correct AnswerverifiedShow Answer

Beta receptors are blocked by

Correct AnswerverifiedShow Answer

The neurotransm itter used by m ost postganglionic fibers is

Correct AnswerverifiedShow Answer

Dilation of the pupil is mediated by

Correct AnswerverifiedShow Answer

Constriction of the right pupil caused by light in the left eye is called the

Correct AnswerverifiedShow Answer

Beta adrenergic receptors

Correct AnswerverifiedShow Answer

Stretch of the urinary bladder

Correct AnswerverifiedShow Answer

The part of the nervous system that promotes restoration of metabolic reserves is the

Correct AnswerverifiedShow Answer

The neurotransm itter used by preganglionic fibers is

Correct AnswerverifiedShow Answer

Pre-ganglionic sympathetic motor neurons are located mainly in the

Correct AnswerverifiedShow Answer

W hich of the following is NOT true of the parasympathetic system?

Correct AnswerverifiedShow Answer

Contraction of the detrusor muscle is

Correct AnswerverifiedShow Answer

In the pupillary light reflex, light is sensed by

Correct AnswerverifiedD

Which of the following is NOT a prevertebral ganglion?

Correct AnswerverifiedD

The part of the nervous system that prepares for emergency action is the

Correct AnswerverifiedShow Answer

Bright light in the right eye

Correct AnswerverifiedA

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified
A