December Quiz for Anatomy

The pharyngotympanic (auditory) tube is indicated by _______.

Label A

The cochlea is indicated by ______________.

Label B

The semicircular canals are indicated by

Label C

The malleus (hammer) is indicated by _________________.

Label E

The auricle (pinna) is indicated by

Label F

The stapes (stirrup) is indicated by ____________________.

Label H

The tympanic membrane is indicated by

Label I

Why are there two humors within the eye? Explain the location and role of each humor.

The aqueous humor is located within the anterior segment (chamber) of the eye. The anterior segment is located anterior to the lens. The vitreous humor is located within the posterior segment (chamber) of the eye. The posterior segment is located posterior to the lends. Both humors prevent the eyeball from collapsing and maintain intraocular pressure. The aqueous humor also nourishes the avascular lens and cornea.

Identify the five basic taste receptors and describe what each type of receptor detects.

The five basic taste receptors are: Sweet Receptors: respond to sugars, saccharine, some amino acids. Sour Receptors: respond to H+ ions, or acids Bitter Receptors: respond to alkaloids Salty Receptors: respond to metal ions Umami Receptors: respond to the amino acid glutamate or the beefy taste of meat.

Which of the following is associated with the external (outer) ear?

auricle (pinna)

The three sets of color receptors within the retina are sensitive to wavelengths of visible light that are ________________.

blue, green, and red

Which of the following is a sex-linked condition that more often affects males?

color blindness

The membrane that covers the outer surface of the eye and lines the eyelids is the ___________________.

conjunctiva

Which one of the following correctly lists the order of the parts through which light passes as it enters the eye?

cornea, aqueous humor, lens, vitreous humor

The greatest visual acuity is housed in the ______________.

fovea centrailis

The pigmented portion of the eye that has a rounded opening through which light passes is the _______________.

iris

The pupil is an opening within the ______________.

iris

The __________________ gland is located above the lateral end of each eye and releases tears.

lacrimal

The biconvex structure that focuses light on the retina is the _________________.

lens

The vibration of sound waves cause the tympanic membrane, or eardrum, to move against an ossicle known as ______________.

malleus or hammer

Identify the pathway of vibrations as they travel from the tympanic membrane to the ossicles ____________.

malleus, incus, stapes

The inability to see distant objects is termed "nearsighted" or ________________.

myopia

Which area of the retina lacks rods and cones and therefore does not detect images?

optic disc (blind spot)

The small, peglike projections of the tongue's surface are called _____________

papillae

The innermost sensory layer of the eye that contains bipolar cells and ganglion cells is the __________________.

retina

Which layer of the eye contains rods and cones?

retina

The fibrous covering of the eye consists of the white outer layer, known as the _________________, and a transparent portion known as the ______________________.

sclera; cornea

Dynamic equilibrium receptors that detect information about angular or rotational movements of the head are housed in the _______________.

semicircular canals

The five taste sensations are

sweet, sour, bitter, salty, umami

The external acoustic meatus (auditory canal) is a narrow chamber situated in the ______________ bone.

temporal

Sound waves entering the external auditory canal hit the eardrum, also known as the ________________.

tympanic membrane

The structure that divides the outer ear from the middle ear is a membrane known as the ________________.

tympanic membrane (ear drum)

The gel-like substance housed in the posterior segment of the eye is the ________________.

vitreous humor (body)