Quiz 2 (ch4 Skin ch8 special senses)
The gland that produces a mixture of oily substances and fragmented cells is indicated by ________.
Label C (ball gland, near hair follicle)
The hypodermis, or subcutaneous tissue, is represented by ________.
Label D (last, bottom, rocks)
The malleus (hammer) is indicated by ________.
Label E (closest to eardrum)
The gland that produces sweat is indicated by ________.
Label E (endocrine gland, squiggly)
The tympanic membrane is indicated by ________.
Label I (eardrum)
The transparent portion of the fibrous layer of the eye is the ________.
cornea
The outermost layer of the epidermis is keratinized and known as stratum ________.
corneum
The sebaceous and sweat glands associated with the skin are classified as ________ glands because they release secretions on to the skin's surface via ducts.
exocrine
What structure is lined with ceruminous glands?
external acoustic meatus (auditory canal)
What part of the eye has the greatest visual acuity?
fovea centralis
Which portion of the retina contains a concentration of cones?
fovea centralis
Which disorder of the eye results from increased pressure due to a buildup of aqueous humor?
glaucoma
Although you get wet while SWIMMING , which protein makes the epidermis a tough protective layer?
keratin
The biconvex structure that focuses light on the retina is the ________.
lens
The white crescent area located over the nail matrix is called the ________.
lunule
The vibration of sound waves causes the tympanic membrane, or eardrum, to move against an ossicle known as ________.
malleus or hammer
Identify the pathway of vibrations as they travel from one ossicle to the next.
malleus, incus, stapes
Hair color is due to a pigment known as ________.
melanin
Which of the following are pigments that contribute to skin color?
melanin, carotene, hemoglobin
Where are the olfactory receptors located?
nasal cavity
Where are photoreceptors cells located within the eye?
neural layer of the retina
What type of chemoreceptor is responsible for our sense of smell?
olfactory receptor
Fibers from the medial side of each eye cross over to the opposite side of the brain at the ________.
optic CHIASMA
Which layer of the eye contains photoreceptors known as rods and cones?
retina
What type of photoreceptor cell allows us to see gray tones in dim light, and provides our peripheral vision?
rods
The fibrous covering of the eye consists of the white outer layer known as the ________, and a transparent portion known as the ________.
sclera and cornea
Which of the following is a lubricant that keeps skin soft and moist and also contains chemicals that kill bacteria?
sebum
Dynamic equilibrium receptors that detect information about angular or rotational movements of the head are housed in the ________.
semicircular canals
Hair cells that function as hearing receptors are located within the ________.
spiral organ of corti
Which of these layers directly connects to the dermis?
stratum BASALE
Which layer of the epidermis is composed of flattened, dead, keratin-filled cells?
stratum CORNEUM
What sign or symptom distinguishes Méniére's syndrome from sensorineural and conduction deafness?
vertigo
Which cranial nerve pairs transmit both hearing and equilibrium information to the brain?
vestibulocochlear nerve (VIII)
The gel-like substance that reinforces the eyeball and prevents it from collapsing inward is the _______
vitreous humor (body)
The layer responsible for whorled ridges on the epidermal surfaces is indicated by ________.
Label A (upper muscle)
A person with total color blindness may lack ________.
Cones
What are the three cranial nerves that carry taste sensations to the brain?
FACIAL, glossopharyngeal, vagus
The choroid consists of an outer, pigmented layer and an inner, neural layer, which is home to rods and cones
False
Which statement regarding the function of the pupil is correct?
The pupil regulates the amount of light entering the eye, so we can see as clearly as possible.
The ciliary body is a smooth muscle structure to which the lens is attached.
True