Wiley Plus Ch15 – Flashcards

The sympathetic division of the ANS is called the thoracolumbar division because: - the axons of the preganglionic neurons control thoracolumbar inflow - sensory stimulation is received via all thoracic and lumber nerve roots - it controls only organs and muscles in the thoracic and lumbar areas of the body - its preganglionic neurons' cell bodies are located in the gray matter of the thoracic and lumbar segments of the spinal cord

Which statement is false in reference to the autonomic ganglia? -the prevertebral ganglia lie close to the abdominal arteries -the terminal ganglia lie near the bellies of skeletal muscles -the sympathetic chain ganglia lie close to the vertebrae on each side -the sympathetic preganglionic fibers of the sympathetic chain are very short -the terminal ganglia are parasympathetic ganglia

Which of the following neurotransmitters does not bind to adrenergic receptors? -noradrenaline -acetylcholine -epinephrine - norepinephrine - adrenaline

An agonist is: -a substance that binds with a neurotransmitter to enhance its effects -a substance that blocks a hormone from applying its effect -a substance that activates a receptor producing the same effect as a neurotransmitter - a substance that prevents a receptor from receiving a hormone

The definition of autonomic tone is: - the communication between the autonomic nervous system and the somatic nervous system -the balance between sympathetic and parasympathetic activity - the constant slight contraction seen in skeletal muscles -the canceling out effect of adrenergic and cholinergic responses to a stimulus

Which of the following effects does not occur during the fight-or-flight response? - the pupils constrict - the airways increase in diameter - blood vessels to skeletal muscles dilate -heart rate speeds up -blood pressure increases

Which of the following sympathetic responses is mismatched with its body part? - iris of eye - dilation of pupil - liver - increased glycogen synthesis - stomach - decreased motility -hair follicles - contraction of arrector pili muscles -adipose tissue - increased lipolysis

Which would be an example of a condition in the body not controlled by autonomic reflexes? - breathing rate and depth -rate of urine formation - tracking a bird flying by -digestion of your evening meal -blood pressure change during exercise

Chromaffin cells -are found in the adrenal cortex -have the same embryological origin as the sympathetic postganglionic cells -secrete hormones that decrease heart rate -all of these choices are correct -none of these choices are true

Acetylcholine is released 1. at the neuromuscular junctions 2. within sympathetic ganglia 3. within parasympathetic ganglia 1 only 2 only 3 only 2 and 3 are correct 1, 2 and 3 are correct

Acetylcholine binds to 1. nicotinic receptors 2. muscarinic receptors 3. alpha receptors 1 only 2 only 3 only 1 and 2 are correct 1, 2 and 3 are correct

Nicotinic receptors - are found in all autonomic ganglia - are found in sweat glands - do not bind nicotine - are found in all autonomic ganglia and are found in sweat glands - are found in all autonomic ganglia and are found in sweat glands, and do not bind nicotine

What part of the nervous system is the main control and integrative center of the autonomic nervous system? -cerebrum -thalamus -hypothalamus -medulla oblongata

The fight or flight response involves all of the following except: -Release of epinephrine -Glycogenolysis -Activation of the sympathetic division -Increase in digestive tract activity to mobilize glucose -Increase in heart rate

The cell bodies of sympathetic preganglionic neurons are located in the: -terminal ganglia -visceral organs -spinal cord -sympathetic trunk ganglia

The parasympathetic postganglionic axon extends from the terminal ganglion to the effector: True False