Simplify the Expression

question 1

Multiple Choice

Simplify the expression.

• A) 25
• C) 4
• D) 16
• E) 81

---

Definitions:

Basilar Artery

A major blood vessel supplying blood to the brain, formed by the union of the two vertebral arteries.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, providing cushioning and maintaining intracranial pressure.

Subarachnoid Space

An area between the arachnoid membrane and the pia mater surrounding the brain and spinal cord, containing cerebrospinal fluid.

Dural Sinuses

Large venous channels found in the dura mater of the brain, draining blood from the brain and cranial cavity.