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WorksheetsThe Components of Blood
Total questions: 25
Worksheet time: 21mins
Which of the following functions is NOT primarily associated with blood?
Transport of hormones from endocrine glands to target organs.
Regulation of pH balance by buffering acidic and alkaline substances.
Production of digestive enzymes for breaking down food in the stomach.
Removal of metabolic waste products such as carbon dioxide and urea.
The most numerous formed element in the blood are the __________, and their function is ___________.
Platelets; to prevent bleeding from open wounds.
White blood cells; to carry oxygen.
White blood cells; to fight infection.
Erythrocytes; to carry oxygen and CO₂
Why is it important for erythrocytes to have a high surface area to volume ratio?
Increased cell flexibility.
Allows for more efficient gas exchange.
Allows each RBC to carry more hemoglobin.
Allows RBCs to ft through small gaps.
White blood cells are referred to as _____________.
Platelets
Erythrocytes
Leukocytes
Correctly order the three steps of hemostasis.
(1) vascular spasm, (2) platelet plug formation, (3) coagulation
(1) platelet plug formation, (2) vascular spasm, (3) coagulation
(1) coagulation, (2) platelet plug formation, (3) vascular spasm
Inadequate blood oxygen levels causes the kidneys to release which chemical messenger?
Thrombopoietin
Erythropoietin
Which statement correctly describes the activities of the components of human blood shown in the diagram?
Both A and B function in immune responses, and C transports oxygen
A, B, and C are able to synthesize hemoglobin
Both B and C provide immunity, and A transports nutrients
A transports oxygen, B starts clots, and C functions in immune response to fight infections
The diagram below represents several human blood cells as observed through a compound microscope. Which function is associated with cell X?
antibody production
oxygen transport
phagocytosis
peristalsis
Red Blood Cells
carry oxygen and carbon dioxide
White Blood Cells
fight infection
Plasma
the liquid portion of the blood
platelets
help clot blood
capillaries
the blood vessel where gas exchange occurs
A hereditary disease in which the blood clots slowly or abnormally. This causes prolonged bleeding with even minor cuts and bumps
Anemia
Hemophilia
Embolism
Atherosclerosis
What happens during the vascular phase of hemostasis?
Blood vessels constrict to slow down blood flow
Platelets adhere to the injured endothelial lining
Coagulation factors convert the platelet plug to a fibrin clot
The fibrin clot is broken down and removed
What is hematopoiesis?
The process of clotting blood
The development and production of blood cells
The breakdown of old blood cells
The circulation of blood through vessels
If you had a severe infection, would you expect your WBC count to be closest to 5,000, 10,000 or 15,000 per cubic mm?
20,000
5,000
15,000
10,000
How can plasma be isolated from the other components of blood?
By adding a reagent that separates the cells
By heating the blood to a certain temperature
By spinning a tube of whole blood at high speeds in a centrifuge
By cooling the blood until the plasma separates
What are platelets also known as?
Erythrocytes
Hemoglobin
Thrombocytes
Megakaryocytes
What happens when the lining of a blood vessel is damaged?
The blood vessel repairs itself without any external assistance.
Platelets are attracted to the wound site and form a sticky plug.
Red blood cells form a clot to prevent further loss of blood.
White blood cells immediately destroy the damaged vessel lining.
__________are small, colourless cell fragments in our blood that form clots and stop or prevent bleeding.
Plasma
Red blood cells
platelets
capillaries
What is the average lifespan of a red blood cell?
365 days
60 days
120 days
240 days
