Biology - Homeostasis

Question 1

THE EYE
What is the function of the eyelid?

Answer 1

Protects the eye and spreads tears to keep the eye moist and clean.

Question 2

THE EYE
What is the function of the iris?

Answer 2

The coloured part of the eye.

Question 3

THE EYE
What is the function of the pupil?

Answer 3

Dark opening in the iris which allows light to enter the eye.

Question 4

THE EYE
What is the function of the sclera?

Answer 4

White part of the eye.

Question 5

THE EYE
What is the function of the cornea?

Answer 5

Part of the clear conjunctiva that covers the iris and the pupil.

Question 6

THE EYE
What is the function of the optic nerve?

Answer 6

Carries electric signals to the brain.

Question 7

THE EYE
What is the function of the lens?

Answer 7

Focuses on the object by getting thicker or thinner.

Question 8

THE EYE
What is the function of the ciliary muscle?

Answer 8

Makes the lens thicker or thinner.

Question 9

THE EYE
What is the function of the retina?

Answer 9

The inside lining of the back of the eye that changes light waves into electrical signals.

Question 10

THE BRAIN
What is the function of the cerebral cortex?

Answer 10

For conscious activities, intelligence, memory and language.

Question 11

THE BRAIN
What is the function of the cerebellum?

Answer 11

The co-ordination or muscle activities.

Question 12

THE BRAIN
What is the function of the Medulla?

Answer 12

Unconscious activities such as heartbeat and breathing.

Question 13

REFLEXES
Where are reflexes co-ordinated?

Answer 13

By the CNS but only the spinal chord as the action of a reflex doesn’t involve the brain.