Ilene Has Difficulty Visually Negotiating Steps and Street Curbs

question 45

Multiple Choice

Ilene has difficulty visually negotiating steps and street curbs. She is having a problem with

• A) dark adaptation.
• B) depth perception.
• C) presbyopia.
• D) a growing blind spot.

---

Definitions:

Chemical Mediators

are substances released from cells that trigger or regulate biochemical pathways, often involved in inflammation and immune responses.

Blood PH

The measure of the acidity or alkalinity of blood, maintained within a tightly controlled range of about 7.35 to 7.45 to ensure proper cellular function.

Cough Reflex

A rapid expulsion of air from the lungs typically triggered by irritation or obstruction in the air passages, serving as a protective mechanism to clear the trachea and bronchi.

Mucus

A slimy substance produced by mucous membranes and glands for lubrication and protection of various internal body surfaces.