The Macula Densa

question 18

Multiple Choice

The macula densa

• A) Senses [Na⁺] in the distal tubule fluid
• B) Directly release renin
• C) Reabsorbs Na⁺ in the proxim al tubule
• D) Creates an osmotic gradient from cortex to medulla
• E) Contains aldosterone

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Definitions:

Pharynx

A muscular tube that connects the mouth and nasal passages with the esophagus and larynx, serving as a pathway for air and food.

Intravenous Infusion

The administration of liquid substances directly into a vein through an infusion set, used to provide medications or nutrients.

Fluid Overload

A medical condition that occurs when too much fluid builds up inside the body, leading to swelling and potentially affecting heart and kidney function.

Primary Intermittent IV Sets

Equipment used for the episodic delivery of intravenous fluids and medications at intervals rather than continuously.