nervous system?

Question 1

what is the conjuctiva?

Answer 1

epithelial layer that lines the surface of eyelid

Question 2

what do the lacrimal glands do?

Answer 2

produce tears to keep the conjunctiva moist

Question 3

what are the 3 layers of the eyeball?

Answer 3

fibrous, vascular, neural

Question 4

what is the sclera?

Answer 4

white of the eye

Question 5

what is the cornea?

Answer 5

transparent layer that covers iris and pupils

Question 6

what makes up the vascular tunic?

Answer 6

iris, choroid, ciliary body

Question 7

what is the iris?

Answer 7

pigmented area, contains smooth muscle to change diameter of the pupil

Question 8

what does the choroid have?

Answer 8

loads of capillary networks

Question 9

what is the fovea centralis?

Answer 9

centre of macula lute and has only cone cells, light is most focused here

Question 10

what is the optic disc?

Answer 10

site where optic nerve leaves the eye

Question 11

what is glaucoma?

Answer 11

form of blindness where the lens is pushed into the vitreous chamber putting pressure on retina and optic nerve

Question 12

what is the process of seeing?

Answer 12

iris allows eye into the eye, light focused onto retina by the cornea, light strikes retina = action potentials to the brain

Question 13

what is cataracts?

Answer 13

lens becomes opaque

Question 14

what are the 3 parts of the external ear?

Answer 14

auricle, tympanic membrane, external acoustic meatus

Question 15

what is the function of the middle ear?

Answer 15

contains 3 auditory vesicles which transmit vibrations from the tympanic membrane to the oval window

Question 16

what is the function of the inner ear?

Answer 16

cochlear= hearing

vestibule and semicircular canal= balance

Question 17

what are the two types of deafness?

Answer 17

conduction and sensorineural

Question 18

what is conduction deafness?

Answer 18

mechanical deficiency in transmitting sound waves

Question 19

what is sensorineural deafness?

Answer 19

involves spiral organ, neural pathway of primary auditory pathway

Question 20

what controls kinetic equilibrium?

Answer 20

semicircular canal

Question 21

what controls static equilibrium?

Answer 21

vestibule

Question 22

what are the 5 basic tastes?

Answer 22

sweet, sour, salty, bitter and umami

Question 23

where are the sensory axons for taste?

Answer 23

facial, glossopharyngeal, and vagus nerves