Biology

Biology

Question 1. 1.

When the semilunar valves are open, is the following statement true or false?

The tricuspid and bicuspid valves are open.

(Points : 1)

TRUE        FALSE

Question 2. 2.

When the semilunar valves are open, is the following statement true or false?

The atria contract.

(Points : 1)

TRUE        FALSE

Question 3. 3.

When the semilunar vlaves of the heart are open, the following statement is true or false?

The blood enters the aorta.

(Points : 1)

TRUE        FALSE

Question 4. 4.

When the semilunar valves are open, the following statement is true or false?

The blood enters the pulmonary arteries.

(Points : 1)

TRUE        FALSE

Question 5. 5.

When the semilunar valves are open, the following statement is true or false?

The ventricles are in systole.

(Points : 1)

TRUE        FALSE

Question 6. 6.

When the semilunar valves are open, the following statement is true or false?

The ventricles are in diastole.

(Points : 1)

TRUE        FALSE

Question 7. 7. Which of the following contribute(s) to venous return (blood returning to the heart)? (Points : 1)

A. breathing or diaphragm action        B. one way valves in the veins        C. contraction of skeletal muscles        D. B and C only        E. A, B, and C

Question 8. 8. The superior vena cava brings what blood to the heart? (Points : 1)

A. Unoxygenated blood from the lower part of the body.        B. Oxygenated blood from the upper part of the body.        C. Oxygenated blood from the lower part of the body.        D. Unoxygenated blood from the upper part of the body.

Question 9. 9. Blood supply to the heart’s myocardium is directly provided by the _____ artery(ies). (Points : 1)

A. aorta        B. coronary        C. jugular        D. pulmonary

Question 10. 10. The mitral valve is located between … (Points : 1)

A. left atrium and left ventricle        B. right atrium and right ventricle        C. left ventricle and body        D. right ventricle and lungs

Question 11. 11. Specialized cells of the right atrium that act as the heart’s pacemaker are called the: (Points : 1)

a. Bundle of His        B. SA node        C. Purkinje fibers        D. AV node

Question 12. 12. The inner lining of the heart is called the: (Points : 1)

A. endocardium        B. myocardium        C. pericardium        D. tunicacardium

Question 13. 13. A heart rate of 100 or more beats per minute (or faster than normal) is called: (Points : 1)

A. arrhythmia        B. hypertension        C. bradycardia        D. tachycardia

Question 14. 14.

“Lupp” or S1 heart sound is due to:

(Points : 1)

A. closure of the bicuspid and tricuspid valves        B. contraction of the ventricles        C. relaxation of the ventricles        D. closure of the pulmonary and aorta semilunar valves        E. conraction of the atria

Question 15. 15. A streptococcal infection may cause this: (Points : 1)

A. murmurs        B. rheumatic heart disease        C. myocardial infaction        D. fibrillation        E. cerebral vascular accident (CVA)

Question 16. 16. The Tunica Externa or Adventitia is the _______ layer of the blood vessel. (Points : 1)

A. inner        B. middle        C. outer        D. only

Question 17. 17.

Use the following scenario for the next five questions (17 -21). John has been in a car accident and needs a blood transfusion; Sally wants to donate blood. John has type O+ blood and Sally has type A+ blood.

Can Sally donate blood to John?

(Points : 1)

TRUE        FALSE

Question 18. 18. John’s blood has __________ in its plasma. (Points : 1)

A. A and B antibodies        B. A antibodies        C. B antibodies        D. O antibodies

Question 19. 19. Sally’s blood has ____________ on her RBCs. (Points : 1)

A. A antibodies        B. A antigens        C. B antigens        D. O antibodies

Question 20. 20. Let’s change the scenario. If John donated blood to Sally, would Sally’s blood coagulate?” (Points : 1)

TRUE        FALSE

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