Lab 23: Heart Parts

Vocabulary :
1. Arteries – a tubular structure that carries blood away from the heart

2. Atrium – top 2 chambers of the heart

3. blood vessels – tubes that blood travels through

4. capillaries – are blood vessels with walls so thin that oxygen, carbon dioxide, nutrients, and waste can go back and forth

5. valves – doors that prevent blood from flowing back from where the blood came from

6. veins – a tubular structure that carries blood to the heart

7. ventricle – bottom 2 chambers of the heart

Data: Heart Diagram (skip 1 page)

STT1

STT2

STT3 a.

b.

c.

Analysis Questions:
1. How is the structure of the heart related to its function? (skip 4 lines)

2. What structures prevent blood in the ventricles from backing up into the atria? Why is it important for your heart to have these structures? (skip 4 lines)

3. Explain what is meant by the statement: “the heart is two pumps.” You may want to draw a diagram to support your explanation. (skip 4 lines)