What Mechanism Prevents or Slows Some Chemicals from Entering the Brain,while

question 62

Multiple Choice

What mechanism prevents or slows some chemicals from entering the brain,while allowing others to enter?​

• A)a threshold
• B)​a blood-brain barrier
• C)​an endoplasmic wall
• D)a differential-drug inhibitor

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Definitions:

Respiratory

Pertaining to or serving for respiration, which is the process of inhaling oxygen and exhaling carbon dioxide.

Chronic Obstructive Pulmonary Disease

A long-term inflammatory lung disease that causes obstructed airflow from the lungs, involving conditions such as emphysema and chronic bronchitis.

Frequent Infection

An increased occurrence of infections, indicating a possible immune system deficiency.

Wheezing

A high-pitched whistling sound made while breathing, often indicating a respiratory condition such as asthma.