Practice Exam – Autonomic Nervous System

1. Preparing the body for the "fight-or-flight" response is the role of the:

a. cerebrum b.parasympathetic nervous system

c. sympathetic nervous system d. somatic nervous system e. all of these

2. The parasympathetic nervous system is characterized by peripheral ganglia near the

a. organs with short postganglionic fibers. b. organs with long postganglionic fibers.

c. spinal cord with short postganglionic fibers. d. spinal cord with long postganglionic fibers.

3. The "resting and digesting" division of the autonomic nervous system is the

a. parasympathetic division b. sympathetic division

c. somatic division d.peripheral nervous system

4. The effector that is not directly controlled by the autonomic nervous system:

a. smooth muscle b. cardiac muscle c. skeletal muscle d. most glands

5. Which of the following is not a result of parasympathetic stimulation?

a. increased saliva b.increased activity of the digestive system

c. lower heart rate d. dilation of pupils e. all are related to parasympathetic stimulation

6. The site of origin of the preganglionic fibers of the parasympathetic nervous sytem is

a. the thoracolumbar region of the spinal cord b. the higher brain centers

c. the sympathetic chain ganglia d. the brain and sacral region of the spinal cord

7. The neurotransmitter released by all parasympathetic fibers:

a. norpinephrine b. epinephrine c. acetylcholine d. dopamine

8. Fibers that release norepinephrine are

a. cholinergic b. adrenergic c. nicotinic d. alpha or beta

9. Cells form this gland act as a part of the autonomic nervous system by secreting epinephrine and norepinephrine into the blood stream:

a. adrenal medulla d. renal cortex c. pancreas d. hypothalamus e. pituitary

10. Vasoconstriction of vascular smooth muscle on blood vessels to the digestive tract occurs when these receptors are bound with norepinephrine:

a. beta-1 b. beta-2 c. alpha-1 d. alpha-2 e. muscurinic

11. In the fight-or-flight response, the increase in heart rate occurs because norepinephrine binds to

a. beta-1 b. beta-2 c. alpha-1 d. alpha-2 e. muscurinic

12. Reuptake of norepinephrine at the axon terminal occurs at which receptor?

a. beta-1 b. beta-2 c. alpha-1 d. alpha-2 e. muscurinic

13. Bronchodilation occurs when norepinephrine binds to these receptors in the smooth muscle of the bronchioles:

a. beta-1 b. beta-2 c. alpha-1 d. alpha-2 e. muscurinic

14. The receptor for acetycholine located on the postganglionic neuron cell body in the autonomic nervous system and also on skeletal muscle:

a. beta-2 b. alpha-1 c. alpha-2 d. nicotinic e. muscurinic

15. The duration of acetylcholine is short-lived after release from the axon terminal due to the action of

a. depolarization b. the postganglionc axons c. reuptake at the axon terminal d. acetylcholine esterase

16. Branches of spinal nerves in the thoracic and lumbar regions form this structure near the spinal cord from which axons leave to innervate organs and tissues of the body:

a. parasympathetic ganglia b. sympathetic chain ganglia

c. autonomic nervous system d. thoracolumbar division

17. An inhibitory muscurinic receptor would be located on

a. GI tract b. salivary gland c. cardiac muscle d. iris e. all are inhibitory

18. Norepinephrine is released by

a. cholinergic fibers b. adrenergic fibers

19. Most organs are innervated by both sympathetic and parasympathetic divisions of the autonomic nervous system.

a. true b. false

Exam #3

1.C

2.A

3.A

4.C

5.D

6.D

7.C

8.B

9.A

10.C

11.A

12.D

13.B

14.D

15.D

16.B

17.C

18.B

19.A