1. Cardiovascular System

2. Vocabulary: 324 1. brady- 1. brady- 2. diastol- 2. diastol- 3. systol- 3. systol- 4. tachy- 4. tachy- 5. ventr- 5. ventr- 6. embol- 6. embol-

3. Functions/Parts 1. Exchange particles through blood flow 1. Exchange particles through blood flow –A. Nutrients and/or electrolytes –B. Gases –C. Waste Products

4. Functions/Parts 2. Pulmonary Circuit 2. Pulmonary Circuit

5. 3. Systemic Circuit 3. Systemic Circuit

7. Vessels CLOSED CIRCUIT!!!

8. Pathway HAacvVHHAacvVHHAacvVHHAacvVH

10. Arteries and Arterioles A. Strong, elastic vessels made of: A. Strong, elastic vessels made of: –Endothelium –Smooth Muscle

12. B. Smooth muscle contraction B. Smooth muscle contraction –Stimulus to the muscle can make two things happen.

13. 1. Vasoconstriction: 1. Vasoconstriction: Muscles Contract Muscles Contract Vessel Diameter decreases Vessel Diameter decreases

14. 2. Vasodilation 2. Vasodilation Muscles Relax Muscles Relax Vessel Diameter increases Vessel Diameter increases

15. Capillaries

17. Capillaries Smallest diameter blood vessels, made up of simple squamos endothelium Smallest diameter blood vessels, made up of simple squamos endothelium

19. PulmonarySystemic Diffuses out ?? Diffuses into ??

20. PulmonarySystemic Diffuses out CO 2 O 2 Nutrients Diffuses into O2O2O2O2 CO 2, Waste Pro.

21. Veins and Venules Return blood from capillaries to the atria (heart) Return blood from capillaries to the atria (heart)

22. Veins and Venules A. Thinner walls with less developed muscle A. Thinner walls with less developed muscle

23. Veins and Venules B. VALVES B. VALVES –One-way –Prevent back flow