BIO 202L Lab 11 Worksheet - The Circulatory System

Lab 11 The Circulatory System BIO202L

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Access Code (located on the lid of your lab kit): Click here to enter text.

Pre-Lab Questions:

1. Describe the pathway of blood traveling through the closed system of the circulatory system starting
with the right atrium.

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Alternatively, you may also draw a map of blood traveling through the closed circulatory system and
insert it below




2. What are the main resistance vessels of the circulatory system? How are they controlled?

The main resistance vessels are small branches of arteries which called the arterioles. They are
controlled by autonomic nerves to help with constricting and dialating to increase and decrease blood

pressure.

, Lab 11 The Circulatory System BIO202L

Experiment 1: Microscopic Examination of Blood Vessels

Post-Lab Questions
1. Label each of the items in the following slide pictures based on your observations.
A- Tunica adventitia
B- Tunica intima
C- Tunica media
D- Tunica adventitia
E- Lumen
F- Tunica media
G- Tunica intema