After Suffering a Blow to the Back of the Head

question 142

Multiple Choice

After suffering a blow to the back of the head, Phil loses his vision. The blow probably caused damage to the

• A) prefrontal cortex.
• B) occipital lobe.
• C) cerebral nuclei.
• D) postcentral gyrus.
• E) limbic system.

---

Definitions:

Plasma Membrane

The plasma membrane is a biological membrane that separates the interior of all cells from the outside environment, controlling the passage of substances.

Symport

A type of transporter protein that moves two or more substances in the same direction across a cell membrane.

Antiport

A mechanism of membrane transport where two substances are moved in opposite directions across a cell membrane, usually by a protein transporter.

Uniport

A type of transporter in cell membranes that moves a single type of molecule in one direction across the membrane.