Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
40 Cards in this Set
- Front
- Back
|
Eyes |
3 layered sphere filled with fluid |
|
|
What are the structural features of the eyes |
Fibrous tunic, vascular tunic, nervous tunic (retina) |
|
|
Sclera |
The white of the eyes, avascular connective tissue. |
|
|
Cornea |
Transparent structure that is avascular CT |
|
|
Conjuctiva |
vascular mucous membrane structure that covers anterior schera. |
|
|
Bloodshot eyes |
When the vessels dilate |
|
|
Choroid |
Structure of the vascular tunic, that contains melanin. Highly vascular. |
|
|
Ciliary body |
Focus the lens, contains ciliary muscle and cililary processes. |
|
|
Iris |
Coloured part of eye |
|
|
Pupil |
hole in iris |
|
|
What are the parts of the nervous tunic? |
Outer pigmented layer, inner neural layer, fovea centralis, optic disc |
|
|
What are the three layers of neurons? |
Photoreceptors, bipolar cells, ganglion cells. |
|
|
Rod |
Photoreceptors, black + white |
|
|
Cones |
coloured photoreceptor |
|
|
Fovea centralis |
Where light is focused. area of greatest visual acuity. No rods/ just cones. |
|
|
Optic disc |
blind spot where blood vessels + optic nerve exit the eye. No rods or cones. |
|
|
Lens |
Avascular, transparent structure. |
|
|
Anterior segment |
Anterior to the lens, contains aqueous humor |
|
|
Posterior segment |
Posterior to lens, contain visterous humor. |
|
|
What are the structural features of the ear |
External, middle, inner ear, cochlea, receptors in inner ear. |
|
|
Function of external ear |
Conduct sounds |
|
|
Structure of external ear |
pinna, meatus, tympanic membrane (ear drum) |
|
|
Function of middle ear |
Conduct sound |
|
|
Parts of middle ear |
Ear ossicles: malleus, incus, stapes |
|
|
Function of inner ear |
Conduct sound |
|
|
Parts of inner ear |
Body labryinth, membraneous labryinth |
|
|
Bony labryninth |
Tunnel in temporal bone. |
|
|
Parts of the bony labryninth |
Semicircular canals, vestibule, cochlea |
|
|
Function of semicircular canaal |
equillibrium |
|
|
function of vestibule |
equillibirium |
|
|
function of cochlea |
hearing |
|
|
membranous labryinth |
surrounded and protected by bony labyinth. |
|
|
What are the parts of the membranous labryinth |
semi-circular duct, utricle +saccule, cochlea duct |
|
|
Cochlea |
coiled structure of the ear |
|
|
what are the channel of the coils of the cochlea |
scala vesticuli, scala tympani, cochlea duct |
|
|
vesticular membrane |
between cochlea duct, scala versiculi |
|
|
basilar membrane |
between cochlea duct and scala tympani |
|
|
tectoral membrane |
covers hair cell |
|
|
receptors in inner ear |
hair cells that synapse with neurons |
|
|
what is the function of hair cells |
send impulses to brain |
