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Nerve fibers from the medial aspect of each eye

cross over to the opposite side at the chiasma

U.S. employees must wear hearing protection at



The oil component found in tears is produced by the

lacrimal glands

The receptor membranes of gustatory cells

gustatory hairs

Light passes through the following structures in which order

cornea, aqueous humor, lens, vitreous humor

Which statement about malnutrition-induced night blindness is most accurate?

Vitamin supplements will reverse degenerative changes.

During dark adaptation

rhodopsin accumulates in the rods

Olfactory glands function to

secrete mucus

Which of the following is not a possible cause of conduction deafness

cochlear nerve degeneration

Which pairing of terms is incorrectly related

frequency: loudness

The blind spot of the eye is

where the optic nerve leaves the eye

Taste buds are not found

in filiform papillae

Which of the following is not a characteristic of olfactory receptor cells

They are unipolar neurons

The eye muscle that elevates and turns the eye laterally is the

inferior oblique

There are three layers of neurons in the retina. The axons of which of these neuron layers form the optic nerves?

ganglion cells

What is the main function of the rods in the eye?

vision in dim light

Farsightedness is more properly called


Factors that inhibit TSH release do not include


Which organ is responsible for synthesizing ANP

the heart <3

The only amine hormone to act like a steroid is


Insulin, a small (51-amino-acid) protein, is synthesized by the beta cells of the pancreas. This hormone is released ________.

when the body's glucose level rises

Which of the following is true about calcium homeostasis

Parathyroid hormone is the single most important regulator of calcium levels in the blood

Several hormones are synthesized in the hypothalamus and transported to the anterior pituitary gland. The mechanism of transportation from hypothalamus to anterior pituitary gland is through the

hypophyseal portal system

The hypothalamic-hypophyseal tract

is partly contained within the infundibulum

The neurohypophysis or posterior lobe of the pituitary gland is not a true endocrine gland because

it is only a hormone storage area that receives hormones from the hypothalamus for release

The parathyroid glands maintain adequate levels of blood calcium. This is accomplished through _

targeting the bone and activating osteoclasts so that calcium will be released

The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on ________.

the presence of the appropriate receptors on the cells of the target tissue or organ

Tinnitis, vertigo, and gradual hearing loss typify the disorder called

Ménière's syndrome

Dark adaptation

Human photoreceptors respond to light in the 100-300 nm range

Which of the following is true about light and vision

Light is a form of electromagnetic radiation that slows down as it enters a medium of relatively less density.

Visual processing in the thalamus does not contribute significantly to

high-acuity vision

________ is a disorder of the olfactory nerves


The tarsal plate of the eyelid


is composed of connective tissue surrounding a thin cartilage plate

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