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ATI TEAS Cardiovascular System
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ATI TEAS Cardiovascular System
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25 Questions

1. genetic blood condition that causes irregularly shaped red blood cells

2. -the heart muscle relaxes, and the chambers are passively filled w/ blood
-during this, the alternating closures of the atrioventricular and semilunar valves are responsible for the distinct 'lub-dub' of the heartbeat

3.
-also known as open circulatory system!
-network of capillaries that drain toxins and wastes away from the body tissues into the blood
-plays a vital role in monitoring and removing foreign entities in the body

4.
-largest artery in the body!
-the artery that carries blood pumped from the LEFT ventricle of the heart into systemic circulation

5.

6. red blood cells, white blood cells, platelets, and plasma

7.
-2 of them; left and right
-chambers of the heart that receive blood returning to the heart from other areas of the body

8.
-red blood cells
-account for the second greatest component of blood by volume
-the functional unit of a erythrocyte is hemoglobin

9. -bring blood from the lungs to the heart
-are among the few veins that carry oxygenated blood!

10.
-smaller branches of arteries
-supply blood to the capillaries

11. Platelets

12.
separates the right atrium and right ventricle

13. -walls of veins are thinner than those of arteries b/c veins do not have to carry blood under high pressure
-contain valves to prevent the back flow of blood
-vessels that return blood to the heart

14. -chronic high blood pressure
-can result from multiple factors, such as atherosclerosis (narrowing of arteries due to plaque buildup), increased blood viscosity (such as if the blood contains high levels of cholesterol), and heart disease

15.
valves that separate the atria and ventricles in the heart

16. The pressure of the blood in the circulatory system
-has 2 numbers (ex: 120/80) which reflect the different pressures that occur at systole and diastole
-is maintained by adjusting cardiac output and vascular resistance
-if it begins to increase, the medulla will signal the heart to beat slower
-if it begins to drop, the heart rate will increase to adjust

17.
-contain high concentrations of lymphocytes
-small glands that filter lymph

18.
type of white blood cell that releases antibodies in response to disease and harness other immune system responses

19.
condition that occurs when hemoglobin levels are low, either b/c the body isn't producing enough red blood cells, such as when someone has iron deficiency, or b/c of another underlying condition that causes the red blood cells to be irregularly shaped, such as the sickle-cell trait

20. -all blood components are suspended in a matrix of plasma!
-liquid component of blood that accounts for approximately half the blood volume
-in addition to blood cells, plasma contains proteins and electrolytes

21.
venae cavae (veins) --> right atrium (chamber) --> tricuspid (valve) --> right ventricle (chamber) --> pulmonic semilunar (valve) --> pulmonary artery (vessel) --> lungs --> pulmonary vein (vessel) --> left atrium (chamber) --> mitral (valve) --> left ventricle (chamber) --> aortic semilunar (valve) --> aorta (artery)

22.
-cell fragments that prevent/mitigate bleeding by developing blood clots
-work w/ coagulating proteins to stick to vessel walls and to each other

23. Which of the following best describes the function of the lymphatic system?

24.
-functional unit of a erythrocyte
-iron containing protein that facilitates gas exchange by binding to oxygen or carbon dioxide

25.

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