How Many Pulmonary Arteries Empty into the Right Atrium of the Heart

question 18

Multiple Choice

How many pulmonary arteries empty into the right atrium of the heart?

• A) 0
• B) 1
• C) 2
• D) 4
• E) 8

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Definitions:

Gene Expression

The process by which information from a gene is used in the synthesis of a functional gene product, typically protein, influencing the cell's structure and functions.

Signaling Molecule

Chemicals that are part of the body's communication system, transmitting information from one cell to another to coordinate bodily functions.

Tissue Transplant Rejection

The immune system's response against a transplanted organ or tissue, leading to its failure and potential loss.

Carrier Proteins

Proteins that transport specific substances across cell membranes through a change in their own structure, vital for the movement of various molecules across cellular barriers.