7th Grade Science Student ebook

16.1 CIRCULATION AND RESPIRATION

CHAPTER 16: HUMAN BODY SYSTEMS

16.1 Section Review

1. What are the organs of the circulatory system?


2. What is the function of the right side of the heart? What is the
   function of the left side of the heart?


3. What is a valve? What is the function of a valve?


4. What causes the lub-dub sound of your heartbeat?


5. Match each component of the circulatory system with its
   function:


6. Why do the wall of arteries need to be thicker than the walls of
   veins?


7. Describe the structure of the lungs. Use the words bronchi,
   bronchioles, alveoli, and capillaries in your description.


8. Explain why each event could cause damage to your body:

a. heart attack

b. smoking

c. stroke

Organ system Function

1. blood a. pump blood


2. arteries b. carry oxygen


3. red blood cells c. prevent blood loss


4. capillaries d. carry oxygen-poor blood to the heart


5. heart e. transport gases and nutrients


6. veins f. protect the body from invaders


7. white blood cells g. carry oxygen-rich blood to the body


8. platelets h. carry gases and nutrients into tissues

Draw a flow chart that traces a

drop of blood through your body.

Use the following terms in your

flow chart:

right ventricle

left ventricle

right atrium

left atrium

capillaries

arteries

veins

superior and inferior vena cava

aorta

pulmonary artery

pulmonary veins

lungs

oxygen-rich blood

oxygen-poor blood