Physio

Question 1

Light sensitive layer at the back of the eye that covers about 65% of its interior surface

Answer 1

Retina

Question 2

The functional coat of the eye

Answer 2

Retina

Question 3

Rods and cones are what

Answer 3

Photoreceptors

Question 4

These are the photoreceptors of the eye

Answer 4

Rods and cones

Question 5

Specialized type of neurons or nerve cells found in the eye’s retina

Answer 5

Rods and cones

Photoreceptors

Question 6

Small, yellowish central portion of the retina

Answer 6

Macula lutea

Question 7

Composed of optic nerve fibers that carry visual information from the retina to the brain

Answer 7

Optic nerve

Question 8

Cable connecting the eyes and the brain

Answer 8

Optic nerve

Question 9

This is located in the center of the macula region of the retina

Answer 9

Fovea

Fovea centralis

Question 10

Cylindrical photoreceptor

Answer 10

Rods

Question 11

A photoreceptor that functions less in light

Answer 11

Rods

Question 12

Photoreceptor that functions well in night time

Answer 12

Rods

Question 13

Photoreceptor that functions best in daylight

Answer 13

Cones

Question 14

It renders mechanical support to the eyeball

Answer 14

Sclera

Question 15

Protects the eyeball by giving mechanical support

Answer 15

Sclera

Question 16

Transitional are by short ciliary nerves posteriorly and long ciliary nerves anteriorly

Answer 16

Limbus

Question 17

Space filled with aqueous humor

Answer 17

Anterior chamber

Question 18

Triangular in shape with the apex arising from the termination of descemet’s membrane

Answer 18

Trabecular meshwork

Question 19

Intermediate vascular coat of the eye

Answer 19

Vascular tunic

Middle tunic

Question 20

A layer of retina despite lack of vascularity, its very active in regeneration or abrasion

Answer 20

Anterior epithelium

Question 21

Peripheral organ of vision

Answer 21

Eyeball

Eyes

Question 22

Antero-posterior diameter of eyeball in ADULTS

Answer 22

24mm

Question 23

Antero-posterior diameter of eyeball ay birth

Answer 23

18mm

Question 24

Toughest layer of the eye

Answer 24

Sclera

Question 25

5/6th outer fibrous layer of the eye

Answer 25

Sclera

Question 26

Clear outer fibrous layer of the eye

Answer 26

Cornea

Question 27

Secreted by ciliary process

Answer 27

Aqueous humor

Question 28

Most vascular portion of the eye

Answer 28

Ciliary process

Question 29

Most vascular portion of the eye

Answer 29

Ciliary process

Question 30

Maintains intraocular pressure. | Removes waste products from the intraocular tissues.

Answer 30

Aqueous humor

Question 31

How many % of incident light is transmitted to the eye?

Answer 31

90%

Question 32

Increase corneal thickness Loss of transparency Gives rise to epithelial edem Causes glaucoma or blindness

Answer 32

IOP | intraocular pressure

Question 33

Anti-bacterial component of tears

Answer 33

Lysozymes

Question 34

Hydrated glycoprotein makes the corneal surface hydrophillic

Answer 34

Mucin layer

Question 35

Deficiency of any of the 3 layers of the corneal tear film

Answer 35

Dry eyes

Question 36

Absence of light

Answer 36

Blindness

Question 37

Transmembrane protein

Answer 37

Opsin

Question 38

Area providing the most distinct and clearest vision

Answer 38

Fovea centralis

Question 39

Whats the visual acuity of a healthy macula

Answer 39

20/20

Question 40

Visual cells of the eye

Answer 40

Rods and cones

Question 41

Cranial nerve 2

Answer 41

Optic nerve

Question 42

Center of the macula

Answer 42

Fovea

Question 43

Part of the fundus where photoreceptors are absent

Answer 43

Blinspot

Question 44

Inner most layer of the eye

Answer 44

Tunica intima | Inner nervous tunic

Question 45

Continuation of axons of the ganglion cells in the retina

Answer 45

Optic nerve

Question 46

Layers that are absent in albinos

Answer 46

RPE | retinal pigment epithelium

Question 47

Complex system of nerves that sends impulses through optic nerve

Answer 47

Retina

Question 48

Small depression in the center of optic disc

Answer 48

Optic cup

Question 49

Muscle that initiates a particular movement

Answer 49

Agonist

Question 50

A muscle in the same eye that assists another muscle in accomplishing an action

Answer 50

Synergist

Question 51

A muscle in the same eye that works against a particular action

Answer 51

Antagonist

Question 52

A movement of one eye separately

Answer 52

Duction

Question 53

Horizontal movement Away from the nose. | Contraction of the lateral rectus muscle with equal relaxation of the medial rectus muscle.

Answer 53

Abduction

Question 54

Horizontal movement towards the nose. | Contraction of the medial rectus muscle with equal relaxation of the lateral rectus muscle.

Answer 54

Adduction

Question 55

Medical term for UP/ ELAVATION

Answer 55

supraduction

Question 56

Down/ depression

Answer 56

Infraduction

Question 57

Simultaneous movement of both eyes

Answer 57

Versions

Question 58

Innervation to one EOM to contract generates an equal innervation to its yoke muscle

Answer 58

Hering's law

Question 59

Simultaneous movement of both eyes in opposite direction

Answer 59

Vergence

Question 60

Light enters from the RPE Retinal pigment epithelium

Answer 60

GCL | ganglion cell layer

Question 61

Also called nerve fibers whose function is to carry impulses and initiate activity in the body

Answer 61

Neurons

Question 62

Carries impulses from the brain to the receptor cells

Answer 62

Efferent fiber

Question 63

Carries impulses from the organ to the brain

Answer 63

Afferent fiber

Question 64

The stimuli for vision

Answer 64

Light

Question 65

Line of communication between efferent and afferent

Answer 65

Fibers reflex Arc | Interneurons

Question 66

Nearly all activities of the gland and muscles are called

Answer 66

Reflexes

Question 67

Fovea has no ____.

Answer 67

Rods

Question 68

Night receptor

Answer 68

Rod

Question 69

Day receptor

Answer 69

Cone

Question 70

Unconscious responses. Automatic response

Answer 70

Reflex

Question 71

The space between 2 neurons are called

Answer 71

Synapse

Question 72

Contains only one space where info in the spinal cord travels between two nerves (neurons)

Answer 72

Simple reflex

Question 73

Parts of monosynaptic simple reflex

Answer 73

Sensor Sensory neuron Motor neuron Muscle that creates an action

Question 74

Knee jerk reflex is

Answer 74

Monosynaptic reflex