Chapter 15 MCQ Flashcards
Which of these physiological changes would not be considered part of the sympathetic fight-or-flight response?
a. increased heart rate
b. increased sweating
c. dilated pupils
d. increased stomach motility
D) Increased Stomach Motility
Which type of fibre could be considered the longest?
a. preganglionic parasympathetic
b. preganglionic sympathetic
c. postganglionic parasympathetic
d. postganglionic sympathetic
b) Preganglionic Synpathetic
Which signaling molecule is most likely responsible for an increase in digestive activity?
a. epinephrine
b. norepinephrine
c. acetylcholine
d. adrenaline
c) Acetylcholine
Which of these cranial nerves contains preganglionic parasympathetic gbers?
a. optic, CN II
b. facial, CN VII
c. trigeminal, CN V
d. hypoglossal, CN XII
b) Facial
Which of the following is not a target of a sympathetic preganglionic fibre?
a. intermural ganglion
b. collateral ganglion
c. adrenal gland
d. chain ganglion
c) Adrenal Gland
Which of the following represents a sensory input that is not part of both the somatic and autonomic systems?
a. vision
b. taste
c. baroreception
d. proprioception
c) Baroreception
What is the term for a reflex that does not include a CNS component?
a. long reflex
b. visceral reflex
c. somatic reflex
d. short reflex
d) Short Reflex
What neurotransmitter will result in constriction of the pupil?
a. norepinephrine
b. acetylcholine
c. epinephrine
d. serotonin
b) Acetylcholine
What gland produces a secretion that causes fight-or-flight responses in effectors?
a. adrenal medulla
b. salivatory gland
c. reproductive gland
d. thymus
a) Adrenal Medulla
Which of the following is an incorrect pairing?
a. norepinephrine dilates the pupil
b. epinephrine increases blood pressure
c. acetylcholine decreases digestion
d. norepinephrine increases heart rate
c) Acetylcholine decreases digestion
Which of these locations in the forebrain is the master control center for homeostasis through the autonomic and endocrine systems?
a. hypothalamus
b. thalamus
c. amygdala
d. cerebral cortex
a) Hypothalamus
Which nerve projects to the hypothalamus to indicate the level of light stimuli in the retina?
a. glossopharyngeal
b. oculomotor
c. optic
d. vagus
c) Optic Nerve
What region of the limbic lobe is responsible for generating stress responses via the hypothalamus?
a. hippocampus
b. amygdala
c. mammillary bodies
d. prefrontal cortex
b) Amygdala
What is another name for the preganglionic sympathetic fibers that project to the heart?
a. solitary tract
b. vasomotor nerve
c. vagus nerve
d. cardiac accelerator nerve
d) Cardiac Accelerator Nerve
What central fibre tract connects forebrain and brain stem structures with the hypothalamus?
a. cardiac accelerator nerve
b. medial forebrain bundle
c. dorsal longitudinal fasciculus
d. corticospinal tract
b) Medial Forebrain Bundle
A drug that affects both divisions of the autonomic system is going to bind to, or block, which type of neurotransmitter receptor?
a. nicotinic
b. muscarinic
c. α-adrenergic
d. β-adrenergic
a) Nicotinic
A drug is called an agonist if it ________.
a. blocks a receptor
b. interferes with neurotransmitter reuptake
c. acts like the endogenous neurotransmitter by
binding to its receptor
d. blocks the voltage-gated calcium ion channel
c) Acts like the endogenous neurotransmitter by binding to its receptor.
Which type of drug would be an antidote to atropine poisoning?
a. nicotinic agonist
b. anticholinergic
c. muscarinic agonist
d. α-blocker
c) Muscarinic Agonist
Which kind of drug would have anti-anxiety effects?
a. nicotinic agonist
b. anticholinergic
c. muscarinic agonist
d. α-blocker
d) a-blocker
Which type of drug could be used to treat asthma by opening airways wider?
a. sympatholytic drug
b. sympathomimetic drug
c. anticholinergic drug
d. parasympathomimetic drug
b) Sympathoimetic drug
What is the primary difference between the SNS and the ANS?
The SNS causes contraction of the skeletal muscles, whereas ANS controls cardiac and smooth muscle and glandular tissue.
Which division of the autonomic nervous system is associated with the fight-or-flight response?
A. Parasympathetic division
B. Sympathetic division
C. Enteric nervous system
D. Central nervous system
B. Sympathetic Division
What effect does the sympathetic nervous system have during the fight-or-flight response?
A. Decreases oxygen intake and delivery to skeletal muscles
B. Shuts down the respiratory and cardiovascular systems
C. Activates many different effector organs for a common purpose, such as increasing oxygen
intake and shutting down the digestive system
D. Increases nutrient absorption in the digestive system
C. Activates many different effector organs for a common purpose, such as increasing oxygen
intake and shutting down the digestive system
Where are the central neurons of the sympathetic division of the autonomic nervous system
located?
A. In the brain stem
B. In the lateral horn of the thoracic and upper lumbar spinal cord
C. In the cervical spinal cord
D. In the sacral spinal cord
B. In the lateral horn of the thoracic and upper lumbar spinal cord.
What is the role of the sympathetic chain ganglia?
A. They are the primary centers for controlling voluntary muscle movements.
B. They are a network of ganglia that run alongside the vertebral column, receiving input from
central sympathetic neurons.
C. They project directly to the adrenal medulla to release hormones.
D. They are the main site of parasympathetic nervous system activity.
B. They are a network of ganglia that run alongside the vertebral column, receiving input from the sentral sympathetic neurons.
Which preganglionic sympathetic fiber does not terminate in a ganglion?
A. The fiber projecting to the heart
B. The fiber projecting to the stomach
C. The fiber projecting to the adrenal medulla
D. The fiber projecting to the sweat glands
C. The fibre projecting to the adrenal medulla.
What type of receptors do all ganglionic neurons have in their cell membrane?
A. Muscarinic receptors
B. Nicotinic receptors
C. Adrenergic receptors
D. Dopaminergic receptors
B. Nicotinic receptors
Which neurotransmitter is primarily released by postganglionic sympathetic fibers?
A. Acetylcholine
B. Dopamine
C. Norepinephrine
D. Serotonin
C. Norepinephrine
What type of reflex does not involve any components of the central nervous system?
A. Long reflex
B. Short reflex
C. Somatic reflex
D. Visceral reflex
B. Short Reflex
Why is the autonomic nervous system important for homeostasis?
A. It operates independently of the central nervous system.
B. Its two divisions compete at the target effector to regulate bodily functions.
C. It only regulates voluntary muscle movements.
D. It is solely responsible for conscious sensory perception.
B. Its two divisions compete at the target effector to regulate bodily functions.
