Across
- 3. pertaining to the heart and lungs on their function of gas exchange
- 7. a small branch of an artery leading into capillaries
- 8. a part of cardiac cycle characterized by relaxation of the heart chambers, during which they fill with blood
- 10. the study of the structures that make up a discrete body system
- 12. a recording of the electrical changes that occur in the heart during a cardiac cycle
- 14. the thin outer layer of the heart wall
Down
- 1. an increase in blood flow through a blood vessel
- 2. the rhythmic flow of blood through arteries that can be felt by pressing the arteries near the skin
- 3. the serous membrane associated with the heart that is composed of two layers
- 4. the restriction of blood flow through a blood vessel by the contraction of smooth muscles in its walls
- 5. one of the two inferior, highly muscular chambers of the heart that push blood into major arteries during contraction
- 6. a stage in the cardiac cycle during which the heart chambers contract
- 9. the primary layer of the heart wall, which is composed of cardiac muscle tissue
- 11. one of two superior chambers of the heart
- 12. the inner layer of the heart wall, which forms a thin, smooth lining covering the chambers and valves
- 13. a microscopic blood vessel that interconnects arterioles with venules