Which of These Is the Tough, Outermost Layer of the Eye

question 3

Multiple Choice

Which of these is the tough, outermost layer of the eye, also called the "white of the eye"?

• A) Pupil
• B) Lens
• C) Retina
• D) Sclera
• E) Fovea centralis

---

Definitions:

Growth Hormone

A hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals.

Spinal Fluid

Also known as cerebrospinal fluid, it is a clear, colorless body fluid found in the brain and spinal cord, crucial for cushioning the central nervous system and maintaining intracranial pressure.

Dura Mater

The tough, outer meningeal layer that covers and protects the brain and spinal cord. Also see arachnoid and pia mater.

Pia Mater

The inner membrane covering the brain and spinal cord; the innermost of the meninges; also see dura mater and arachnoid.