A&P2 Chapter 15 Autonomic Nervous System
Match the somatic NS and autonomic NS with their properties.
1 Originates in the spinal cord Both 2 Originates in the brainstem SNS 3 Under conscious control SNS
Match the adrenergic receptor subtype with its action.
1. α1 receptor Smooth muscle contraction 2. α2 receptor Inhibition of insulin release 3. β1 receptor Amylase release 4. β2 receptor Increased insulin release 5. β3 receptor Increased lipolysis
Where would you not find a cholinergic nicotinic receptor?
A All parasympathetic target organs
Chain ganglia:
A Are found along the entire length of the spinal cord. E Carry sympathetic post-ganglionic fibers out to target tissues.
Which of the following adrenergic neurotransmitter receptors plays the major role in heart activity?
A Beta 1
The parasympathetic ganglion that serves the eye is the ______________.
A Ciliary ganglion
A 27-year- old woman presents to the ED with extreme tachycardia (175 bpm) and hypertension (153/99). An ECG reveals irregularities in her heart rate with intermittent missed beats........ What is the likely problem the patient is suffering from?
A Guillain-Barre syndrome
Which of the following is incorrect relative to sympathetic activity?
A Inhibits orgasm
A 54- year-old man presents to the clinic for a two-week history of anxiety, profuse sweating, heat intolerance, and severe headaches....... What is the likely problem the patient is suffering from?
A Overproduction of epinephrine
What is the "resting and digesting" division of the ANS?
A Parasympathetic division
Which of these effectors is not directly controlled by the ANS?
A Skeletal muscle
Which nerve has sympathetic control of arrector pili smooth muscle?
A Spinal nerve
Which of the following choices about norepinephrine (NE) is incorrect?
A Sympathetic pre-ganglionic neurons secrete NE.
The somatic nervous system (SNS) and ANS differ in all of the following ways except ______________.
A The origin of the nerve cell bodies
Which nerve has parasympathetic control of the heart?
A The vagus nerve
Which of the following does not describe the ANS?
B A system of sensory neurons that innervates all muscle cells
Which of the following is not a plexus of the vagus nerve?
B Celiac
Which of the following plexuses is not an origin for the pre-ganglionic fibers of the vagus nerve?
B Cervical plexus
Beta-blockers ______________.
B Decrease heart rate and blood pressure
Which of the following is not a result of parasympathetic stimulation?
B Dilation of the pupils
Which neurotransmitter will result in acceleration of the heart rate?
B Epinephrine
The parasympathetic branch of the ANS:
B Innervates organs and tissues in the bottom half of the body. C Arises from the brainstem and lower regions of the spinal cord. D Has long pre-ganglionic fibers.
Which of the following tissues is only innervated by the sympathetic NS?
B Kidney E Liver
The parasympathetic fibers of the ______________ nerves innervate smooth muscles of the eye that cause the lenses to bulge to accommodate close vision.
B Oculomotor
The secretions of the adrenal medulla act to supplement the effects of ______________.
B Sympathetic stimulation
Which of the following is an incorrect pairing?
C ACh dilates the pupil.
Parasympathetic functions include ______________.
C Lens accommodation for close vision
Preparing the body for the "fight-or-flight" response is the role of the ______________.
C Sympathetic nervous system
How do SNS reflexes differ from ANS reflexes?
C The hypothalamus plays a critical role in ANS reflexes.
When comparing the ANS and the SNS, which of the following statements is incorrect?
C The neurotransmitter utilized at the effector in both systems is ACh
The route of major parasympathetic outflow from the head is via the ______________.
C Vagus nerve
Over 90% of all parasympathetic fibers are derived from which cranial ne
C X
The somatic nervous system and ANS differ in all of the following except ______________.
D All of the neurotransmitters
Which of the following statements about the parasympathetic division of the ANS is incorrect?
D Crying and salivation is not a parasympathetic innervation response but rather a sympathetic response.
Sympathetic nerves may leave the spinal cord at which vertebra?
D First thoracic
Where would you not find an autonomic ganglion?
D In the lymph nodes
Fibers that enter and leave the sympathetic chain without synapsing form structures called ______________.
D Splanchnic nerves
Poisoning of a person with mushrooms containing muscarine would be expected to have which of the following effects?
D Stimulus of target cells innervated by post-ganglionic parasympathetic fibers
The smooth muscle of the digestive viscera is served largely by the ______________.
D Tenth cranial nerve
Which of the following statements concerning the ANS is correct?
D The sympathetic chain ganglion are also called the paravertebral ganglion.
Which of these cranial nerves contains pre-ganglionic parasympathetic fibers?
D X, Vagus
In an ANS reflex:
E Tissues can be innervated by both branches and they usually have opposite effects.