Lexie Lane Unit 4

4. a method of retaining body heat
6. layer of blood vessels made up of mostly smooth muscle cells and elastin fibers within the extracellular matrix
7. opening in a blood vessel
8. cycles and or beats/min
9. a higher than normal heart rate
11. where the exchange of gas occurs
13. persistent high blood pressure
16. pulse is taken by feeling the pulsations of blood passing through the radial artery of the wrist
17. graph that electrical events can be recored on (EKG)
18. the "fight or flight" hormones
20. the plane that divides the body or organ in half resulting in an anterior and a posterior half
21. small blood vessels that connect arteries to capillaries
22. color of deoxygenated blood on heart diagrams
23. carry blood towards the heart
24. valve found in between the left atrium and left ventricle

1. the basic instrument used to take a blood pressure
2. covers surfaces and lines cavities
3. upper, smaller chambers that receive blood into the heart
5. the movement of blood between the lungs and the heart
10. small blood vessels that connect capillaries and veins
12. a procedure that uses a "balloon" to open partially blocked blood vessels
14. muscular wall of the heart
15. age, air temperature, body size, and fitness level can affect....
19. if untreated, this can eventually lead to death of myocardial tissue