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BIO 219 Exam: Questions With Expert Verified Solutions
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BIO 219 Exam: Questions With Expert Verified Solutions
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BIO 219 Exam: Questions With Expert VerifiedSolutions
1. Augustus Waller invented a machine that measures ____.
a. blood pressure when the ventricles are contracting
b. blood pressure when the ventricles are relaxed
c. cardiac output
d. electrical activity of the brain
e. electrical activity of the heart Right Ans - E
2. In Waller's experiment, he placed each of his feet into a pan containing ____.
a. carbon dioxide
b. iron
c. mercury
d. pure water
e. salt solution Right Ans - E
3. The ____ is an accessory system of vessels and organs that helps balance the
fluid content of the blood and surrounding tissues.
a. circulatory system
b. non-circulatory system
c. accessory vessel system
d. lymphatic system
e. heart Right Ans - D
4. Which animal has a gastrovascular cavity?
a. earthworm
b. fish
c. hydra
d. insect
e. sponge Right Ans - C
5. An animal's circulatory system contains ____.
a. solid medium to transport nitrogen
b. blood vessels for transporting solid food
c. blood vessels leading to the heart
d. a mouth opening to the outside
e. nitrogen to transport wastes Right Ans - C
,6. The gastrovascular cavity of a sponge serves important functions in both
the circulatory and ____ systems.
a. digestive
b. endocrine
c. muscular
d. reproductive
e. urinary Right Ans - A
7. An open circulatory system ____.
a. contains blood in blood vessels
b. is composed of two circulatory systems
c. mixes hemolymph and interstitial fluids together
d. is more efficient than a closed system
e. opens directly to the outside Right Ans - C
8. Amphibians can accomplish gas exchange using ____.
a. gills only
b. lungs only
c. respiration through the skin only
d. both gills and lungs
e. gills, lungs, and respiration through the skin Right Ans - E
9. The purpose(s) of two circuits in a closed circulatory system is to ____.
a. collect and distribute blood within the heart
b. take blood to and from all parts of the body
c. take blood to and from the lungs
d. keep oxygenated and deoxygenated blood separate
e. allow oxygenated and deoxygenated blood to mix Right Ans - C
10. Plasma makes up approximately ____ percent of the total blood volume.
a. 10
b. 25
c. 50
d. 75
e. 90 Right Ans - C
11. Hematocrit makes up approximately ____ percent of the total blood
volume.
,a. 10
b. 25
c. 45
d. 50
e. 70 Right Ans - C
12. In humans, blood cells are produced in the ____.
a. bone marrow
b. heart
c. kidneys
d. liver
e. lymph nodes Right Ans - A
13. The ____ component of plasma constitutes antibodies.
a. albumin
b. dissolved gas
c. ibrinogen
d. Hormone
e. Immunoglobulin Right Ans - E
14. The ____ components of blood are involved in the formation of clots.
a. albumin and fibrinogen
b. albumin and leukocytes
c. fibrinogen and erythrocytes
d. fibrinogen and platelets
e. platelets and albumin Right Ans - D
15. Approximately ____ percent of plasma is water.
a. 10
b. 27
c. 55
d. 77
e. 92 Right Ans - E
16. The two most abundant ions in plasma are ____.
a. HCO3- and Ca2+
b.HCO3- and Cl-
c. Na+ and Ca2+
d. Na+ and Cl-
, e. Na+ and K+ Right Ans - D
17. The main function of erythrocytes is to ____.
a. carry oxygen
b. form clots
c. fight off infections
d. produce blood cells
e. secrete erythropoietin
ANSWER: a Right Ans - A
18. Of the cellular blood components, ____ are the smallest in size.
a.erythrocytes
b. leukocytes
c. platelets
d. albumins
e. lymphocytes Right Ans - C
19. The ____ are the most numerous type of leukocyte in a healthy individual.
a.basophils
b. eosinophils
c. lymphocytes
d. monocytes
e. neutrophils Right Ans - E
20. Erythropoietin, a hormone that stimulates stem cells in the bone marrow
to increase erythrocyte production, is produced in the ____.
a. bone marrow
b. heart
C. kidneys
D. liver
e. lymph nodes Right Ans - C
21. The function of heart valves is to ____.
a. form blood cells
B. participate in immunity
c. prevent backflow of blood
d. prevent clot formation
e. push blood into the aorta Right Ans - C
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