Anatomy Questions

Front 1

nerve fibers from the medial aspect of each eye

Back 1

cross over to the opposite side at the chiasma

Front 2

overall regulation of activity of the ans is centered in the

Back 2

hypothalamus

Front 3

amplification of atmospheric sound waves by the ear occurs by which processes

Back 3

focusing into a smaller diameter pathway as sound passes from the pinna to the tympanic membrane to the oval window

Front 4

integration and distribution of afferent olfactory impulses is primarily a function of the

Back 4

olfactory tubercle

Front 5

which of the following structures related to vision can not be seen with an ophthalmoscope

Back 5

optic chiasma

Front 6

cells that respond to peptide hormones do so through a seq of bio chem reactions involving a receptor and kinase activation for first and second mess to comm what must happen

Back 6

a series of membrane proteins act as the link between first and second messengers

Front 7

receptors for hearing are located in the

Back 7

cochlea

Front 8

protection of the surface of the eye is aided by

Back 8

antibodies in tears

Front 9

the importance of vision as a human sensory function is shown by

Back 9

more than 1 million nerve fibers exit each eye

Front 10

all preganglionic axons of the autonomic nervous system release

Back 10

acetylcholine

Front 11

effectiveness of a hormone may vary for which of the following reasons

Back 11

different #s of receptor cells
destruction by enzymes proportions of inactive hormone

Front 12

the ability to orient your self in respect to gravity is possible by which receptor

Back 12

utricle and saccule of the vestibule

Front 13

what is not a change that may be caused by hormonal stimulus

Back 13

direct control of the nervous system

Front 14

which of the taste modalities does not stimulate a unique receptor

Back 14

umami

Front 15

light striking pigments in receptors of the retina

Back 15

hyperpolarizes both rods and cones

Front 16

presbyopia is a form of far-sightedness caused by

Back 16

loss of the elasticity of the lens

Front 17

olfactory receptor cells

Back 17

are neuron replaced every 60 days

Front 18

reflexive control of pupil diameter and focusing of the lens is regulated by

Back 18

nuclei (superior colliculi) in the mid brain

Front 19

the receptor cells that are responsible for equilibrium and for hearing

Back 19

emit action potentials at a baseline rate when stimulated
are hair cells in the cochlea and labyrinth , are neurons that cannot be regenerated

Front 20

conscious perception of vision is localized in which region of the brain

Back 20

occipital lobe of the cortex

Front 21

what is true of endocrine glands

Back 21

hormones are secreted in pulses that occur at different intervals of even times of the day

Front 22

sympathetic responses generally are widespread because

Back 22

single preganglionic axons make multiple synapses outside of the spinal cord in the sympathetic ganglia

Front 23

what is true of equilibrium

Back 23

hair cells in the semi-circular canals respond to changes in movement

Front 24

parasympathetic stimulation of the eye

Back 24

causes the pupil to constrict

Front 25

olfactory nerve impulses

Back 25

are conducted to the brain by means of the olfactory nerve

Front 26

the pigment found in both rods and cones of the retina that captures photons of light as they pass through the cells

Back 26

are opsin proteins on the membranes of the cones and rods

Front 27

over 90% of all parasympathetic fibers are derived from cranial nerve number

Back 27

x vagus nerve

Front 28

your ability to sense static equilibrium is because of the presence of which structures in the cochlea

Back 28

otoliths

Front 29

low freq sounds entering the ear

Back 29

are separated from higher freq by the perilymph

Front 30

the ability to see in dim light conditions

Back 30

is performed by rods that are stimulated mostly by blue-grn light

Front 31

olfactory and taste sense have what characteristics in common

Back 31

both detect chem compounds that dissolve in aqueous solutions
the diversity of tastes is mostly due to olfactory stimuli

Front 32

the secretions of the adrenal medulla act to supplement the effects of

Back 32

sympathetic stimulation

Front 33

lubrication and moistening of the eyelids to prevent abrasion of the eye is performed by

Back 33

meibomian glands

Front 34

conduction of taste nerve impulses involves which nerual pathways

Back 34

glossopharyngeal nerve

Front 35

which of the tissues is not controlled by the ans

Back 35

skeletal muscle

Front 36

hormones often cause different tissues to elicit multiple or different responses this is because :

Back 36

different tissues may different protein kinases that are activated by the hormone

Front 37

if an organ is exposed to chronically increased levels of a hormone, the target organ often responds by decreasing the number of hormone receptors in its membrane or nucleus this is called

Back 37

down regulation

Front 38

in color vision , red cones have which properties

Back 38

they are most sensitive to green light wave lenghts they have low sensitivity to light in the yellow and red wavelengths

Front 39

taste buds are replaced

Back 39

every 10-14 days

Front 40

muscarinic receptors in the autonomic nervous system

Back 40

are responsive to ach

Front 41

higher level interpretation of olfactory neural signals

Back 41

includes significant emotional weighting in the limbic system

Front 42

the muscle that dilates the pupil

Back 42

is the radial muscle of the iris

Front 43

information from balance receptors generates nerve impulses that are conducted immediately to

Back 43

midbrain reflex centers

Front 44

transmission of neural signals from the retina

Back 44

is in the form of action potentials generated in the ganglion cells and only occurs if bipolar cells stimulate actions potentials in the ganglion cells

Front 45

alpha and beta receptors in orgas regulated by the ans

Back 45

respond to epinephrine and norepinephrine