HAP QUIZ

3. A structure in the lungs that reduces surface tension and prevents collapse.
4. The division of the respiratory system responsible for gas exchange.
12. A hormone that regulates blood pressure by increasing water retention.
15. The number of breaths taken per minute.
19. The female reproductive structure where fertilization occurs.
21. The enzyme responsible for breaking down carbonic acid into water and carbon dioxide.
22. The primary male reproductive hormone.
23. The process that prepares sperm to fertilize an egg.
24. The type of blood vessel responsible for oxygen exchange in tissues.

1. The thickest muscular layer of the heart wall.
2. The hormone surge triggering ovulation.
5. A measure of the average blood pressure in the arteries during one cardiac cycle.
6. The capacity of blood vessels to expand or contract to regulate blood flow.
7. The process that involves inhalation and exhalation.
8. Senses blood pressure changes in the arteries.
9. The functional unit of gas exchange in the respiratory zone.
10. The cell formed by the fusion of sperm and egg.
11. The pumping organ of the cardiovascular system.
13. The process by which oxygen and carbon dioxide are exchanged between the blood and body tissues.
14. A hormone involved in the positive feedback loop for uterine contractions during labor.
16. Primary site of gas exchange in the lungs.
17. Type of reproduction resulting in genetically identical offspring.
18. A phase in the menstrual cycle where the corpus luteum secretes hormones.
20. A condition where total lung capacity decrease