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Name ________________________________
Date _____________________ Hour _____
Study Guide – Human Body Test
Unit 2 – Respiratory and Circulatory Systems, Lessons 10-16
Lesson 10-11 Respiratory System
1. The air sacs in your lungs are called ________________________
2. Your lungs are surrounded by _______________________________
3. The functions of the nose are ______________________________________________________
______________________________________________________________________________
4. The larynx is commonly called the ________________________________
5. The trachea is commonly called the _______________________________
6. A hiccup is caused by ____________________________________________________________
7. A burp is caused by ______________________________________________________________
8. The amount of air a person can forcibly exhale after taking a deep breath (as in the lab) is called
______________________________________________________________________________
9. When you inhale, your diaphragm moves ( up / down ), and the ribs move ( up / down ), the
volume of your chest cavity ( increases / decreases ), which ( increases / decreases ) the air
pressure in your lungs, causing air to rush ( in / out ).
10. Gas exchange occurs (where?) _____________________________________________________
11. Characteristics of the bell jar model of breathing: ______________________________________
______________________________________________________________________________
______________________________________________________________________________
12. Characteristics of the syringe model of breathing: ______________________________________
______________________________________________________________________________
______________________________________________________________________________
13. The path of an air during ventilation (breathing): _______________________________________
______________________________________________________________________________
14. When exhaling, the amount of air remaining in your lungs is the __________________________
Lesson 12-13 Cellular respiration and calories
15. A calorie is a unit of __________________________
16. The primary function/role of cellular respiration is to release__________ from digested nutrients.
17. During cellular respiration, ______________________ helps convert __________________ to
energy, while releasing _________________________ and ________________________.
18. Cellular respiration takes place in the __________________________ of body cells.
19. If a food sample releases more heat when burned, then it has more _________________________
Lesson 14-16 Circulatory System
20. Which vessels carry blood to the heart? ________________________________________
21. Which vessels exchange nutrients and waste products? __________________________________
22. Which vessels carry blood away from the heart? _______________________________________
23. Which vessels are the smallest? ____________________________________________________
24. _______________________ are solid substances that aids in clotting of blood
25. ________________________ cells helps protect the body against disease
26. ________________________ cells carry oxygen to body cells
27. The liquid part of blood is called __________________________________
28. Risk factors for high blood pressure include __________________________________________
______________________________________________________________________________
29. What is the relationship between artery size and blood pressure? __________________________
______________________________________________________________________________
30. The human circulatory system is a __________________ system with __________ loops and a
______________-chambered heart.
31. The __________________ is the “superhighway” that carries oxygenated blood out of the heart
to the rest of the body.
32. Why does blood from the body cells come back to the heart with less oxygen? _______________
_____________________________________________________________________________
33. In the heart, the septum separates the ________________________________________
34. The oxygenated blood is in the ______________ side of the heart.
35. The ________________ of the heart is stronger than the ______________________.
*TIPS:*
 A table of blood types is shown on the test, with questions that can be easily answered if you
can read the table.

The picture from Student Sheet 14.1c is on the test with questions about the direction of
blood flow (choices: up or down) in various places that are labeled, and the names of the
different structures of the heart.

What is homeostasis, and what are examples of it with these body systems?