Download Human Circulatory System

Human Circulatory System
The human circulatory system has 2 main components: the heart and blood vessels. The
heart is a muscular organ that pumps blood around the body via blood vessels. The
blood vessels are a network of tubes that transport blood throughout the entire body.
There are two types of blood vessels found within the human circulatory system:
arteries and veins. Arteries are blood vessels that carry blood away from the heart,
towards the rest of the body and veins are blood vessels that carry blood toward the
heart.
1. The Mammaliam Heart – Fill in the Blanks: Refer to pages 256 – 258 in your Biology
11 textbook to complete the fill in the blank for the mammalian heart.
A fluid-filled membrane called the _______________________ surrounds the heart. The
fluid bathes the heart, preventing ___________________ between its outer wall and
the __________________.
The heart consists of two parallel ______________ separated by the
__________________. The pumping action is _____________________ (occurs on both
sides at the same time). The pump on the right receives _______________________
blood from the body ______________ and pumps it to the ______________. The pump
on the left receives ___________________ blood from the ____________ and pumps it
to the cells of the body. Vessels carrying blood to and from the lungs comprise the
____________________ circulatory system. Vessels that carry blood to and from the
body comprise the ____________________ circulatory system.
ONE-WAY BLOOD FLOW (Fig. 1 and 2, pg. 256)
Blood is carried to the heart by ____________. The _________________ ___________
cava carries ____________________ blood from the head and upper body to the right
_______________. The ___________________ ______________ cava carries
__________________________ blood from all the veins below the
__________________________ to the same atrium. Oxygenated blood flowing from the
__________________ enters the left ______________ by way of the
_______________________ veins. Blood from both _________________ is eventually
pumped into the larger _______________________.
Valves called ___________________________ (____) valves separate the atria from the
ventricles. AV valves prevent blood from flowing from the _____________________
back into the ________________. A second set of valves, called
______________________ valves, separate the ___________________ from the
arteries. These valves are _________-____________ shaped and prevent blood that has
entered the arteries from flowing back into the ________________________.
Blood is carried away from the heart by _________________. The
___________________, the largest artery in your body, carries
_____________________ blood. The _______________________ arteries (a branch of
the _______________) supply oxygen and _________________ to the heart itself. Chest
pains, or ________________, can occur when these vessels are blocked and not enough
_________________ gets to the heart muscles. ___________ deposits and
____________________ can collect inside coronary arteries reducing blood
_______________. A coronary ________________ operation involves removing a
_______________ from another part of the body and grafting it into position.
Refer to page 257 of your Biology 11 textbook and the Human Circulation System
PowerPoint to complete the following questions.
3. What are the three types of blood vessels found within the human circulatory
system?
4. How can you tell arteries and veins apart?
5. What is the purpose of the capillaries?
6. Why do we refer to the heart as a double pump? Explain.
7. Identify the name given to the structure that covers the heart and aids in protection.
8. How many chambers does the human heart have? What are their names and
location?
9. What is the difference between the pulmonary and systemic circulation?
Mammalian Heart
10. Label the following parts of the mammalian heart: right atrium, left atrium, right
ventricle, left ventricle, left and right pulmonary arteries, pulmonary veins, arteries,
aorta, supererior vena cava, inferior vena cava. On the diagram of the heart (next page)
indicate the direction of blood flow through the heart. Use red to show the pathway of
oxygen-rich blood and blue the pathway of oxygen-poor blood.