Across
- 3. Contraction of vascular smooth muscle
- 4. The smallest type of blood vessel. The site of exchange between the blood and tissue cells.
- 6. Thin walled blood vessel that returns blood toward the heart from the venules
- 8. A ballooning or bulging of the wall of an artery caused by dilation or weakening of the wall.
- 11. A general term for a cavity.
- 12. Rhythmic expansion and recoil of arteries resulting from heart contraction that can be felt from the surface of the body.
- 13. Valves (AV)Valve located between the atria and their corresponding ventricles prevent blood from flowing back into the atria when the ventricles contract.
- 14. One of the two chambers of the heart that receive blood from veins and deliver it to the ventricles.
- 15. Middle and largest layer of the heart wall, composed of cardiac muscle.
Down
- 1. Blood vessel that conducts blood away from the heart and toward the capillaries.
- 2. of specialized myocardial cells in the wall of the right atrium that initiates the heartbeat. The SA node is called the pacemaker of the heart.
- 5. Band of smooth muscle that controls blood flow into individual capillaries.
- 7. Heart valves located between the ventricles and the two major arteries of the body (pulmonary and aortic) that prevent blood from returning to the ventricles after contraction.
- 9. The part of the vascular system that takes deoxygenated blood to the lungs and returns oxygenated blood to the heart.
- 10. Relaxation of vascular smooth muscle.