MCQ Chapter 15: The Autonomic Nervous System Flashcards
Which cranial nerve synapses in the otic ganglion?
facial (VII)
glossopharyngeal (IX)
oculomotor (III)
vagus (X)
glossopharyngeal (IX)
Norepinephrine is released from neurons by which process?
diffusion
endocytosis
exocytosis
osmosis
exocytosis
Which axons are not considered cholinergic?
sympathetic preganglionic
parasympathetic postganglionic
sympathetic post ganglionic to heart
parasympathetic preganglionic
sympathetic post ganglionic to heart
This nervous system division controls voluntary activities such as the activation of skeletal muscles.
central nervous system
autonomic nervous system
posterior nervous system
somatic nervous system
somatic nervous system
Vomiting centers, swallowing, and salivation are influenced by the
limbic system
pineal gland
pituitary gland
hypothalamus
hypothalamus
A collection of cell bodies in the peripheral nervous system is a
nerve
nucleus
ganglion
tract
ganglion
The subdivision that releases only acetylcholine from motor neurons is the
central nervous system
autonomic nervous system
peripheral nervous system
somatic nervous system
somatic nervous system
The second neuron in the autonomic motor pathway is the
preganglionic neuron
autonomic ganglion
postganglionic neuron
postsynaptic neuron
postganglionic neuron
During emotional stress, which system dominates?
enteric nervous system
parasympathetic nervous system
sympathetic nervous system
somatic nervous system
sympathetic nervous system
The information that is processed by the central nervous system is also said to have been
automated
elicited
integrated
activated
Integrated
Nerves that directly innervate voluntary muscles are part of the
central nervous system
somatic nervous system
autonomic nervous system
enteric nervous system
somatic nervous system
Many cardiac arrhythmias are due to improper regulation of the autonomic nervous system (ANS). Which of the following could be a cause of cardiac arrhythmia that arises from the ANS?
inability of the accessory (XI) nerve to transmit stretching sensations from the ventricles
larger-than-normal gap junctions between cardiac muscle cells
failure of the vagus (X) nerve to signal slowing of the heart rate
release of neurotransmitters from somatic motor neurons stimulating the heart
failure of the vagus (X) nerve to signal slowing of the heart rate
A motor neuron that stimulates the hamstring muscle group is which type of neuron?
peripheral neuron
central neuron
interneuron
basal nucleus
peripheral neuron
Which muscle(s) is/are autorhythmic?
smooth
cardiac
skeletal
cardiac and smooth
cardiac and smooth
Which of the following muscle types is subject to the greatest amount of extensibility?
cardiac and skeletal
cardiac
skeletal
smooth
smooth
Muscle cells of the _______________ are associated with somatic motor neurons.
small intestine
diaphragm
heart and small intestine
diaphragm and heart
heart
diaphragm
Muscle cells are innervated by autonomic motor neurons in
smooth muscle
cardiac muscle
smooth and cardiac muscle
skeletal muscle
smooth and cardiac muscle
Which of the following muscle types is responsible for controlling blood pressure?
skeletal
smooth
cardiac and skeletal
cardiac
Which of the following muscle types is responsible for controlling blood pressure?
skeletal
smooth
cardiac and skeletal
cardiac
1) Interoceptors can detect what sensation? Select all that apply.
a) blood gas levels
b) stretch of organ walls
c) grilled steak aroma
d) taste of chocolate
e) pain
A. B. E
2) Autonomic motor neurons regulate visceral activities by
1. increasing activities in effector tissue.
2. decreasing activities in effector tissue.
3. allowing bidirectional conduction across synapses.
a) 1
b) 2
c) 3
d) 1 and 2
e) 1, 2, and 3
D
3) The autonomic nervous system is involved in controlling what effectors? Select all that apply.
a) exocrine glands.
b) skeletal muscle.
c) cardiac muscle.
d) smooth muscle.
e) endocrine glands.
A. C. D. E
4) Which statements describe a preganglionic neuron? Select all that apply
a) Has axons that exit the CNS in a cranial or spinal nerve. b) Has mostly myelinated axons.
c) Forms the first part of an autonomic motor pathway.
d) Has its cell body in the brain or spinal cord.
e) Forms gap junctions with postganglionic neurons in autonomic ganglia.
f) Has unmyelinated axons
g) Releases acetylcholine
h) pathway will lead to skeletal muscle
A. B. C. D. G
5) A postganglionic neuron in the ANS
a) releases neurotransmitter that binds to the effector cell.
b) is the first part of an autonomic motor pathway.
c) has its cell body in the brain or spinal cord.
d) has its axons exiting the CNS through cranial nerves.
e) carries information into the sympathetic chain ganglia.
A
6) Which neurons would normally have the shortest axons? Select all that apply
a) Somatic motor neurons
b) Preganglionic parasympathetic neurons
c) Postganglionic sympathetic neurons
d) Preganglionic sympathetic neurons
e) Postganglionic parasympathetic neurons
Answer 1: d Answer 2: e