Physiology-neural control & coordination

Question 1

Which of the following contain yellow coloured pigment?

Answer 1

Yellow coloured pigment is c/d lutin. It is found in yellow spot of eye, ovarian (check audio)

Question 2

What is bleaching?

Answer 2

When rhodopsin breaks into retinal and Opsin the event is c/d bleaching.

Question 3

Cones contain a pigments c/d

Answer 3

Blue cones = cynopsin; green cones = chloropsin; red cones = erythropsin….all 3of them are made of retinal and opsin protein. They only vary wrt opsin protein.

Question 4

Cones work in ______ light while rods work in _______ light.

Answer 4

Cones= Bright light aka photopic vision; rods= dim light aka scotopic vision.

Question 5

What is power of accommodation?

Answer 5

Ability of eye to shift focus for objects at different focal lengths autonomously.

Question 6

For parallel beam of light ciliary muscles and suspensory ligaments are_______ respectively.

Answer 6

Ciliary muscles are relaxed while suspensory ligaments are contracted.

Question 7

Fro nearby objects ciliary muscles and suspensory ligaments are _______ respectively.

Answer 7

Ciliary muscles are contracted while suspensory ligaments are relaxed.

Question 8

Degree of refraction is greater in: a) near objects. b) far object

Answer 8

Near objects…as the lens is comparatively spherical when object is near the eye than when it’s far from the eye(flattened/narrow lens)

Question 9

Cervical enlargement is found in _____ & lumber enlargement is found in ______. a) cervical region, lumber region. b) cervical region, thoracic region. c) thoracic region, lumber region d) none of these

Answer 9

Cervical region, thoracic region

Question 10

The spinal cord is made up of ____ spinal segments.

Answer 10

31 segments.

Question 11

Which of the following remain different for both spinal segments and spinal vertebres? a) 8 cervical segments. b)7 cervical segments. c) 1 coccyx. d)4 coxygeal vertebres

Answer 11

7 cervical vertebres while 8 cervical segments and 4 coccygeal vertebres while 1 coccyx segment.

Question 12

List the cranial nerves in order along with their origin and function.

Answer 12

Module SP-3 pg.no.114

Question 13

Which cranial nerves are mixed in nature?name them.

Answer 13

Cranial nerves no. 5,6,9,10 I.e trigeminal, facial, glossopharyngeal, vagus respectively.

Question 14

Which of the following is not related to movement of eyeball? a)trochlear. b)occulomotor. c)abducens. d)optic

Answer 14

d) optic as it is related to sight; while abducens and trochlear are for rotation of eyeball, occulomotor for movements of eyeball.

Question 15

All spinal nerves are mixed but all cranial nerves are not mixed. All cranial nerves are mixed but not all spinal nerves are mixed.

Answer 15

All spinal nerves are mixed but only 4 cranial nerves are mixed (5,6,9,10 = trigeminal, facial, glossopharyngeal, vagus)

Question 16

Loss of power of smell is called

Answer 16

Anosmia.

Question 17

Loss of vision is called

Answer 17

Anopsia.

Question 18

Loss of facial expressions is characteristic of which disease

Answer 18

Bells plasy.

Question 19

Abnormal sound in ear is known as

Answer 19

Tinitus.

Question 20

Double vision is called

Answer 20

Diplopia.

Question 21

Ptosis is another name for

Answer 21

Eyelid drop- eyelids don’t open properly.

Question 22

Ventricles of brain are lined with epithelium called

Answer 22

Ependyma.

Question 23

_____,_______&______ produce CSF.

Answer 23

Ependyma, anterior choroid plexus & posterior choroid plexus.