Download HW23CirculatoryStructure

Homework #23: Circulatory System Structure
1. Draw and label the following diagram of the human circulatory system.
a. Label the type of blood vessel that is represented by the pattern marked with letter A? There are 7 areas on the
diagram that show the same pattern. (hint: dense networks of these blood vessels are called “beds”)
b. Label D and E correctly with the blood vessel type (direction arrows and shading are clues).
2. Refer to your diagram to answer the following.
a. B and C mark different sides of the heart. Letter ___ marks the side that pumps blood with more oxygen.
b. B and C mark different sides of the heart. Letter ___ marks the side that pumps blood with more CO2.
c. B and C mark different sides of the heart. Letter B marks the side that pumps blood to the _______.
d. B and C mark different sides of the heart. Letter C marks the side that pumps blood to the _______.
e. Which side of the heart (B or C) should be stronger? Why?
f. Between the intestines and liver is a large blood vessel. Is it an artery or a vein? Why?
3. Think about differences between arteries and veins.
a. Why would arteries need to be stronger than veins?
b. Why would veins need one-way valves more than arteries? One-way valves keep blood from going backwards.
(think about how this could be a problem when you stand-up)
4. All body cells need oxygen.
a. Label with an arrow where oxygen enters the blood. This organ is called_____.
b. Explain how oxygen gets into the cells?
c. What does oxygen do inside each cell?
d. What does this have to do with homeostasis?
5. All body cells need food (glucose sugar).
a. Label with an arrow where glucose enters the blood. This organ is called_____.
b. Explain how glucose gets into the cells that need it?
c. What does glucose do inside each cell?
d. What does this have to do with homeostasis?
6. All body cells produce carbon dioxide waste.
a. Explain how carbon dioxide is made inside each cell?
b. Circle the place on the diagram where CO2 is shown entering the blood.
c. Label with an arrow where carbon dioxide escapes the blood. This organ is called_____.
d. What does this have to do with homeostasis?
7a. Define: Vasodilation
and Vasoconstriction
b. How do these two activities help the body keep temperature homeostasis in the body?