Lab 27: The Pressure's On

Warm Up: What does High Blood pressure mean? What is going on in the body that would be causing high blood pressure? (skip 4 lines)

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

2. blood vessels – tubes that blood travels through

3. circulatory system – is an organ system that moves blood, nutrients, gases, and wastes to and from cells, helps fight diseases and helps stabilize body temperature and pH to maintain homeostasis

4. function – an object’s job or role

5. model – a smaller or larger version of an object that is too small or too big to observe in a classroom

6. qualitative data – properties or characteristics that are used to identify things

7. quantitative data – values that have been measured or counted

8. structure – what an object is made of and how the object is shaped

Data: Blood Pressure Data (skip ½ page)

Analysis Questions:

1. Squeezing the pressure pump modeled the pumping of the heart and the work the heart does when blood pressure is normal.

a. Recall what you observed when you acted as the artery. What happened to the flow of blood when the artery was clamped? (skip 3 lines)

b. How did clamping the artery affect how hard the heart had to pump? (skip 3 lines)

2. What effect did clamping the artery have on the pressure of the water inside the tubing? What does it mean to have high blood pressure? (skip 4 lines)

3. Explain what happens to the heart when you have high blood pressure as modeled in this activity. Support your answer with qualitative and quantitative data. (skip 4 lines)