physiology

Question 1

which nerves cause eye to move upwards?

Answer 1

superior rectus and inferior oblique

Question 2

which nerves cause eyes to move downwards?

Answer 2

inferior rectus and superior oblique

Question 3

which muscle moves eyes up from an abducted position ?

Answer 3

superior rectus

Question 4

which muscle moves eyes down from an adducted position ?

Answer 4

superior oblique

Question 5

what shape is the lens to look at objects close up?

Answer 5

short and fat

Question 6

para/sympathetic innervation causes contraction of the ciliary body?

Answer 6

para (contraction of the ciliary body causes relaxation of the suspensory ligaments, lens becomes round)

Question 7

which muscles cause dilated (mydriatic pupil)

Answer 7

dilator pupillae

Question 8

which muscles cause meiotic pupil?

Answer 8

sphinter pupillae

Question 9

afferent and efferent for changing the refractory shape of the lens?

Answer 9

v2 is afferent

v3 is efferent

Question 10

longest intercranial nerve, so is most likely to be susceptible to compression or stretch with raised inter cranial pressure?

Answer 10

CN6