The BBB Functions to Prevent Unwanted Molecules from Entering the Brain

question 29

Multiple Choice

The BBB functions to prevent unwanted molecules from entering the brain tissues, by which of these mechanisms?

• A) requiring all molecules that pass through to use either a carrier or transport protein
• B) selectively allowing some water-soluble molecules pass through with the help of proteins
• C) selectively allowing some lipid-soluble molecules pass through with the help of proteins
• D) requiring lipid-soluble molecules to use either a carrier or transport protein

---

Definitions:

Discharge Planning

The process of preparing a patient for a safe transition from the hospital to home or another care setting.

Left-Side Weakness

A condition resulting in reduced strength or paralysis on the left side of the body, often caused by a stroke or brain injury.

Admission

The act of entering into a facility or institution for a specific purpose, such as hospitalization or enrollment in an educational program.

Health Maintenance

The practice of adopting lifestyle and medical strategies to prevent disease, prolong life, and promote physical and mental well-being.