Filters
Question type

Study Flashcards

White rami appear white in color due to the fact that they are ________.

Correct Answer

verifed

verified

The micturition reflex results in


A) vigorous contraction of the smooth muscle of the large intestine and relaxation of anal sphincters.
B) contraction of smooth muscle in the bladder and relaxation of urinary sphincters.
C) a decrease in blood pressure due to a slowing of heart rate.
D) retention of urine and feces by relaxing some muscles and contracting others.

E) A) and D)
F) B) and D)

Correct Answer

verifed

verified

Autonomic ________ are collections of sympathetic postganglionic axons and parasympathetic preganglionic axons, as well as some visceral sensory axons.

Correct Answer

verifed

verified

Both types of axons of the sympathetic branch of the ANS use norepinephrine as the neurotransmitter.

A) True
B) False

Correct Answer

verifed

verified

The superior mesenteric ganglion receives preganglionic sympathetic neurons from the ________ segments of the spinal cord.


A) T1-T4
B) T2-T6
C) T5-T9
D) T7-T9
E) T10-T12

F) A) and E)
G) A) and D)

Correct Answer

verifed

verified

Prevertebral ganglia are located


A) posterior to the vertebral column.
B) lateral to the vertebral column.
C) anterior to the vertebral column.
D) at the termination site of the postganglionic axon.
E) medial to the dorsal spinal columns.

F) A) and D)
G) C) and D)

Correct Answer

verifed

verified

In the heart, activation of these receptors increases heart rate.


A) α1
B) α2
C) β1
D) β2

E) All of the above
F) B) and D)

Correct Answer

verifed

verified

Sweating is a result of sympathetic stimulation.

A) True
B) False

Correct Answer

verifed

verified

When an effector receives input from both the sympathetic and the parasympathetic divisions, it is said to have ________ innervation.

Correct Answer

verifed

verified

In the parasympathetic division, ________ ganglia are located in the wall of the target organ.

Correct Answer

verifed

verified

Preganglionic axons of the ANS release


A) acetylcholine.
B) norepinephrine.
C) either acetylcholine or norepinephrine.

D) A) and C)
E) None of the above

Correct Answer

verifed

verified

Which sympathetic pathway is responsible for activating the esophagus, heart, lungs, and thoracic blood vessels?


A) Splanchnic nerve pathway
B) Adrenal medulla pathway
C) Postganglionic sympathetic nerve pathway
D) Spinal nerve pathway
E) None of the choices is correct.

F) A) and C)
G) A) and E)

Correct Answer

verifed

verified

Activation of parasympathetic fibers in pelvic splanchnic nerves leads to


A) inhibition of urinary bladder contractions.
B) erection of the male penis and female clitoris.
C) decreased secretions in the digestive tract.
D) an increase in the heart rate.
E) decreased secretion of adrenaline from the adrenal glands.

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

The preganglionic axons of CN VII extend to the


A) pterygopalatine ganglion.
B) submandibular ganglion.
C) otic ganglion.
D) pterygopalatine and submandibular ganglia.
E) pterygopalatine, submandibular, and otic ganglia.

F) D) and E)
G) C) and D)

Correct Answer

verifed

verified

The ________ mesenteric ganglion receives preganglionic sympathetic neurons from the T10-T12 segments of the spinal cord.

Correct Answer

verifed

verified

Which system engages in mass activation?


A) Parasympathetic nervous system
B) Sympathetic nervous system

C) A) and B)
D) undefined

Correct Answer

verifed

verified

All ANS preganglionic axons release ________ as their neurotransmitter.

Correct Answer

verifed

verified

The abdominal ________ plexus consists of the celiac plexus, superior mesenteric plexus, and inferior mesenteric plexus.

Correct Answer

verifed

verified

Which may be involved in an autonomic reflex?


A) Cardiac muscle contraction
B) Smooth muscle contraction
C) Secretion by glands
D) All of the choices are correct.
E) None of the choices are correct.

F) A) and E)
G) B) and D)

Correct Answer

verifed

verified

In the parasympathetic division, ________ ganglia are located close to the target organ.

Correct Answer

verifed

verified

Showing 121 - 140 of 140

Related Exams

Show Answer