1. 15.1 The Cardiovascular System
Sponge: Set up Cornell Notes on pg. 87 Topic: 15.1 The Cardiovascular System Essential Question: What is the major difference between arteries and veins. Text:
15.1 The Cardiovascular System
2.1 Atoms, Ions, and Molecules
What is the major difference between arteries and veins.
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2. Objective
SWU: the vessels of the cardiovascular system SW: create a tree-map of the major vessels in the body (including functions)

3. Introduction to the Circulatory System 43s

4. The cardiovascular system: system made up of arteries, veins, capillaries, blood, and the heart
The heart is a muscular organ that pumps blood through the cardiovascular system
Pumps 7,000 liters of blood through the body each day
Contracts (beats) about 2.5 billion times in the average lifetime

5. Blood Circulation 2m51s

6. Size of Heart Average Size of Heart: 14 cm long 9 cm wide
About the size of your fist

7. Location of Heart Location of Heart: Posterior to sternum
Medial to lungs
Anterior to vertebral column
Lies upon diaphragm

8. 15 minutes Using the internet: Function Direction of flow
Pg. 86
Blood Vessels
Arteries Arterioles Capillaries Venules Veins
Using the internet:
Function
Direction of flow
Other important info
15 minutes
IF FINSHED EARLY, WORK
ON LAB 42 (p )

9. Blood Vessels Arteries Carry blood away from heart Under high pressure
Arterioles (ar-tear-e-als)
Transports blood from arteries capillaries
Greatly influences blood flow and blood pressure

10. Blood Vessels Capillaries Smallest blood vessels
Connect the arterioles and venules
Semipermeable (allow materials in and out)
Sites of exchange of substances between blood and body cells (ie. Nutrients, gases, waste)

11. Blood Vessels Venules (ven-ules)
Transports blood from capillaries  veins
Veins
Carry blood toward ventricle of heart
Carries blood under low pressure
Contain the greatest volume of blood in the body (approx 60%)
Can function as “blood reservoirs” in times of blood loss. They will help maintain blood pressure by returning more blood to the heart

12. HW: 15.2 Clinical Application Blood Vessel Disorders
Read
Highlight
Answer Questions
Lab 42
Blood Vessels
Part A
Part B
Text:
Do this first!

13. Crash Course-Blood Vessels

14. 15.2 Clinical Application: Blood Vessel Disorders
Pg. 589
Describe the arterial disease atherosclerosis. Why are they dangerous?
Deposits of fatty materials, particularly cholesterol, form within the inner lining of the arterial walls. These deposits are called plaque, and interfere with blood flow.
2. What are 5 risk factors for developing atherosclerosis?
A fatty diet high in saturated fats, elevated blood pressure, smoking, obesity, lack of exercise.
3. What are some causes of an aneurysm?
Atherosclerosis, trauma, high blood pressure, infections, inherited disorders, or defects in blood vessels.
4. What may happen if a person gets an aneurysm?
It may cause symptoms by pressing on nearby organs, or it may rupture and produce a great loss of blood.
5. What is a pulmonary embolism?
When a blood clot forms in a deep vein detaches and lodges in the pulmonary arterial system within a lung (may lead to death)
6. What are varicose veins? How does someone get them?
Irregular dilation in superficial veins, prolonged back pressure, heredity, pregnancy, obesity and standing for long periods of time.

15. Varicose Veins