Eye:The Sense Organ

Q.

What is the function of ciliary muscles?

Q. Which part of the eye converts incoming light signals into electrical impulses?

1. Retina

2. Pupil

3. Lens

4. Optic nerve

Q.

The limit of resolution of eye is approximately

1. $1^{°}$angle

2. $1$angle

3. $1mm$

4. $1cm$

Q. Arrange the following in the order in which a light ray travels to enable vision in the human eye.

1. External light
2. Cornea
3. Pupil
4. Eye lens
5. Retina

Q. ________ is tough and thick white sheath that protect the inner parts of the eye.

1. Cornea
2. Conjunctiva
3. Iris
4. Sclera

Q.

Where Are Images Of Objects Formed?

Q.

__________________ lens moist and protects it from physical shocks

1. Iris

2. Aqueous humour

3. Tears

4. Vitreous humour

Q. The fluid filled in the space between lens and cornea is termed as _______________.

1. Vitreous humour
2. Synovial fluid
3. Aqueous humour
4. CSF

Q. The lens and cornea are not having blood supply. So, the nutrients are supplied by

1. Retina
2. Blind spot
3. Vitreous humour
4. Aqueous humour

Q. Cavity, where vitreous humour in the eyes is present

1. Behind the lens
2. Infront of the lens
3. Behind the retina
4. Between the retina and sclerotic

Q.

__________________ is vascular layer containing connective tissue.

1. None of the above

2. Choroid

3. Sclera

4. Retina

Q. Which is absent in aqueous humor?

1. Oxygen
2. Glucose
3. Hyaluronic acid
4. Carbon dioxide

Q. Enzyme present in lacrimal glands of eye that has immunological role is

1. Lipase
2. Ligase
3. Lacriminase
4. Lysozyme

Q. Eye muscles are innervated by ________.

1. Oculomotor, abducens and facial
2. Oculomotor, facial and vagus
3. Oculomotor, abducens and vagus
4. Oculomotor, trochlear and abducens

Q. Chamber containing vitreous humour is present ________.

1. In front of lens
2. Behind the lens
3. Between lens and iris
4. Between iris and cornea

Q. Vitreous humor is

1. Mucoid connective tissue
2. Solid crystalline
3. All of the above
4. Watery fluid

Q. Cavity of aqueous humour is

1. Behind the lens
2. In front of lens
3. Between choroid and sclerotic
4. None of the above

Q. Function of aqueous humor is

1. Preparation of image
2. Nutrition to lens
3. Both A and B
4. Maintain intraocular pressure

Q. Aqueous humour is secreted by

1. Choroid
2. Ciliary body
3. Retina
4. Lacrymal gland

Q. Which of the following statement is incorrect w.r.t. human eye?

1. Vitreous humour is not replaceable
2. Sympathetic stimulus causes constriction of pupil
3. Extrinsic eyeball muscles are innervated by III, IV, VI cranial nerves
4. Cornea is avascular and can be easily transplanted

Q. Aqueous humour is present

1. Infront of the lens
2. Infront of the cornea
3. Behind the conjunctiva
4. Infront of the retina

Q. Aqueous and vitreous humors are separated by _______.

1. Lens
2. Iris
3. Retina
4. Optic nerve

Q. Human eye forms the image of an object on the _______.

1. cornea
2. iris
3. pupil
4. retina

Q. Label the parts of the eye.

1. Cornea
2. Lens
3. Ciliary muscles
4. Retina

Q. Light enters our eyes through the cornea.

1. True
2. False

Q. Aqueous humour is present between the

1. Lens and Retina
2. Iris and Lens
3. Cornea and Iris
4. Cornea and Lens

Q. ________ controls the amount of light entering the eye.

1. Iris
2. Cornea
3. Sclera
4. Choroid

Q. Aqueous humor and vitreous humor are secreted by

1. Iris
2. Ciliary body
3. Lens
4. Cornea

Q. Where is aqueous humour produced, what is its circulation path, and where does it drain from the eyeball?

Q. A small region on the retina of the eye which contains only cones is called as

1. Blind spot
2. Ora serrata
3. Area centralis
4. Fovea centralis