New Mexico State University

BIO 226

PhysioEx Lab Report

Exercise 5: Cardiovascular Dynamics

Activity 5: Studying the E?ect of Blood Vessel Radius on Pump Activity

Date: 20 September 2019

Pre-lab Quiz Results

1)The heart is resting during

2. The right side of the heart pumps blood
3. The layer of the blood vessel that is stimulated by the autonomic nervous system is
4. In the experiment, the pump simulates

5. If the right beaker simulates the ?ow of blood to the systemic circuit of the body, what do the right valve and ?ow tube represent?

Experiment Results

Predict Question

1 Predict Question: If you increase the ?ow tube radius, what will happen to the pump rate to maintain constant pressure?

Stop & Think Questions

1. When the piston of the pump reaches its lowest point, the volume remaining in the pump is the

2. If you increase the right ?ow tube radius, what will happen to resistance and ?ow rate?

3. If the left ?ow tube represents the pulmonary veins, what does the left source beaker represent?

Experiment Data

Post-lab Quiz Results

1. The pump piston in the simulation is up during
2. The pump in the simulation represents the
3. The amount of blood ?owing into the destination beaker (right beaker) with a single pump is called the

4. In this experiment, the increase in right ?ow tube radius resulted in

5. Which chamber should be present in the ?ow pattern of the experiment, given that the vessels and valves surrounding it are present (the chamber was omitted from the experiment for simplicity)?

Review Sheet Results

1. Explain the e?ect of increasing the right ?ow tube radius on the ?ow rate, resistance, and pump rate.
2. Describe what the left and right beakers in the experiment correspond to in the human heart.