MASTERING A&P Chapters 14, 15, & 16 – Flashcards

The circular structures shown within pathways B and C represent which of the following? a) tracts b) nuclei c) ganglia d) rami

Which of the following releases the neurotransmitter norepinephrine? a) terminus of a parasympathetic postganglionic neuron b) terminus of a sympathetic postganglionic neuron c) terminus of a sympathetic preganglionic neuron d) terminus of a somatic motor neuron

Which of the following is responsible for the overall integration of the autonomic nervous system (ANS)? a) reticular formation b) brain stem c) frontal lobe of the cerebral cortex d) hypothalamus

Outflow of the sympathetic division occurs from which regions of the CNS? a) cervical and lumbar b) cranial and sacral c) thoracic and lumbar d) cranial only

Which description is NOT consistent with the sympathetic division? a) thoracolumbar b) long postganglionic fibers c) most innervation from the vagus nerve d) ganglia close to the spinal cord

True or False: Unlike the sympathetic division, the parasympathetic division synapses with the adrenal medulla.

Which of the following is a characteristic of the lens? a) The lens is vascularized. b) The lens focuses light on the retina. c) In a healthy eye, the lens will be opaque. d) The lens of the human eye has a concave shape.

If retinal detachment occurs in the macula lutea, one can predict that there would be a significant loss of ______. a) color vision b) dim-light vision c) vision of objects in the peripheral regions of the visual field d) All of the listed responses are correct.

Which accessory eye structure is NOT correctly matched with its function? a) eyelid: protect the eye b) conjunctiva: protect eye from drying out c) tarsal glands: produce tears d) lacrimal glands: destroy bacteria

Which structure provides the vascular support for the eye? a) the cornea b) the choroid c) the aqueous humor d) the ciliary body

What structure in the eye creates a visual blind spot? a) ora serrata b) fovea centralis c) optic disc d) macula lutea

What term refers to the eye's moving medially to track items close at hand? a) refraction b) constriction c) accommodation d) convergence

During close vision, what actions must the eye take to bring an object into focus? a) contract the ciliary body b) relax the ciliary body c) dilate the pupil d) change the curvature of the cornea

Choose the correctly paired terms. a) astigmatism: clouding of the lens b) myopia: farsightedness c) hyperopia: nearsightedness d) nyctalopia: night blindness

Which photoreceptors respond to very dim light? a) green cones b) rods c) blue cones d) red cones

What type of channel is responsible for the initial changes in the membrane potential of the hair cells, which ultimately determines the cochlear nerve response to sound? a) mechanically gated b) leakage c) chemically gated d) voltage-gated

True or False: The semicircular canals are adapted to detect static equilibrium.

Which of the following is NOT representative of endocrine glands? a) They produce hormones. b) They drain into blood vessels. c) They drain lymph vessels. d) They have ducts.

What allows a cell to respond to a hormone? a) the gland that releases the hormone b) the presence of a specific hormone receptor c) the location of the cell d) the structure of the hormone

Which of the following occurs in situations where more than one hormone produces the same effects at the target cell and their combined effects are amplified? a) synergism b) summation c) antagonism d) permissiveness

Which hormone aids in water resorption? a) thyroid hormone b) adrenocorticotropic hormone c) parathyroid hormone d) antidiuretic hormone