Biomed II Lab Quiz #5

SHEEP EYE - B

Cornea

SHEEP EYE - C

Sclera

EYE MODEL - D

Iris

EYE MODEL - D

Choroid coat

SHEEP EYE - J

Retina

SHEEP EYE - G

Lens

Macula lutea

EAR MODEL- E

External acoustic meatus

EAR MODEL - F

Tympanic membrane

What does the tympanic cavity contain?

The auditory ossicles (Hammer, anvil, stirrup)

Ear model - J

Pharyngotympanic tube

EAR MODEL - BLUE

semicircular canals

EAR MODEL- STAR

Cochlea

LYMPHATIC SYSTEM - A

Thymus

LYMPHATIC SYSTEM - C

Spleen

Pituitary gland

Thyroid gland

A

Pancreas

A

Adrenal gland

Testis

What is the blind spot?

A small area on the retina of the eye where the optic nerve connects and exits. This area lacks light-sensitive rods and cones, meaning it cannot detect light.

What is astigmatism?

a very common eye condition that causes blurry or distorted vision because the front surface of the eye or the lens inside is shaped more like a football than a round basketball

What does the cillary body help with?

Contraction

What is the Snellen chart?

Displays letters of progressively smaller size to measure test subjects sight/normal persons sight

Normal Vision

20/20 vision. This means that the test subject sees the same line of letters at 20 feet that a normal person sees at 20 feet.

Nearsighted/myopa

20/40 vision. The test subject sees at 20 feet what a normal person sees at 40 feet. (wide)

Farsighted/hyperopia

20/15 vision - a person can see objects at 20 feet that a person with 20/20 vision can only see at 15 feet. (Longer)

What does the corrective lens for myopic eye do?

Concave lens moves focal point further back

Hyperopic correctic lens

Convex lens moves focal point forward