Quiz Ch 14 – Flashcards

For which of the following activities is the parasympathetic nervous system generally responsible? A. Fight-or-flight responses B. Heartbeat and breathing C. Running and walking D. Resting and digesting

Which of these effectors is not directly controlled by the autonomic nervous system? A. smooth muscle B. cardiac muscle C. most glands D. skeletal muscle

Acetylcholine is the substance released by the axonal endings of the somatic efferent fibers and by the parasympathetic nerve fiber endings. True False

The ANS stimulates smooth and skeletal muscles and glands, whereas the somatic nervous system innervates cardiac muscles only. True False

Which of the following does not receive branch fibers of the vagus nerves? A. Cardiac plexuses B. Inferior hypogastric plexus C. Abdominal aortic plexus D. Pulmonary plexuses

The two types of receptors that bind acetylcholine are _______ and _______ receptors. A. Caffeinic; muscarinic B. Nicotinic; caffeine C. Nicotinic; muscarinic D. Alpha; beta

The secretions of the adrenal medulla act to supplement the effects of ________. A. vagus nerve activity B. neurosecretory substances C. sympathetic stimulation D. parasympathetic innervation

The parasympathetic ganglion that serves the eye is the ________. A. pterygopalatine ganglion B. ciliary ganglion C. otic ganglion D. submandibular ganglion

The "resting and digesting" division of the autonomic nervous system is the ________. A. peripheral nervous system B. sympathetic division C. somatic division D. parasympathetic division

Fibers that enter and leave the sympathetic chain without synapsing form structures called ________. A. gray rami communicantes B. spinal nerves C. white rami communicates D. splanchnic nerves

Visceral reflex arcs differ from somatic in that ________. A. visceral arcs do not use integration centers B. somatic arcs contain one additional component that visceral arcs do not possess C. visceral arcs contain two sensory neurons D. visceral arcs involve two motor neurons

The white rami communicantes ________. A. are unmyelinated B. carry preganglionic axons to the sympathetic chain C. carry postganglionic fibers to the periphery D. are found only in the C1-T1 cord segments

The route of major parasympathetic outflow from the head is via the ________. A. phrenic nerve B. vagus nerve C. sacral nerve D. sympathetic trunk

Which division of the nervous system has short preganglionic neurons? A. motor B. somatic C. sympathetic D. parasympathetic

Parasympathetic ganglia are also called what because of their location? A. prevertebral ganglia B. collateral ganglia C. terminal ganglia D. trunk ganglia

The celiac ganglion is primarily associated with the sympathetic division. True False

The craniosacral division is another name for the parasympathetic division. True False

Which of the following is responsible for the overall integration of the autonomic nervous system? A. Cerebral cortex B. Brain stem C. Spinal cord D. Hypothalamus

Emotions influence autonomic reactions primarily through integration in the ________. A. hypothalamus B. lateral horn of the spinal cord C. lateral geniculate of the thalamus D. inferior colliculus

What is the effect of norepinephrine on the heart? A. a decrease in heart rate B. epinephrine does not affect the heart C. an increase in heart rate D. a decrease in stroke volume

Autonomic reflex centers occur in the spinal cord, medulla, and midbrain. True False

Raynaud's disease ________. A. is induced by heat stress B. is characterized by exaggerated vasoconstriction in the extremities C. occurs primarily in association with injury to the spinal cord D. is frequently life threatening