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WorksheetsBlood Physiology Quiz
Total questions: 10
Worksheet time: 3mins
Which dietary component is needed for the synthesis of DNA and influences the production of RBCs?
Calcium
Iron
Vitamin A
Folic acid
Vitamin D
What percentage of the body weight (in kg) is composed of blood? What percentage of this blood is composed of plasma?
20%; 55 %
20%; 45%
7%; 45%
7%; 55%
< 1%; < 1%
Which of the following statements about red blood cells (RBCs) is INCORRECT?
Mature RBCs lack ribosomes
The lifespan of RBCs is about 30 days
Mature RBCs lack nuclei
RBCs contain hemoglobin
The biconcave shape of RBCs is beneficial because it:
allows more space for the mature RBCs to accommodate the nucleus.
makes the RBCS more flexible so they can pass and bend through the smaller bloodvessels more easily.
prevents diapedesis of RBCs through the walls of the blood capillaries.
decreases the ratio of cell surface area to volume of the cell and allows for greater functionality
Which of the following conditions can stimulate erythropoietin secretion?
Low levels of oxygen in blood
Normal levels of hemoglobin in RBCs
A high RBC count
An increased blood flow through the kidneys
Which of the following blood components provide the major defense for our bodies against invading bacteria and viruses?
red cells
white cells
platelets
hemoglobin
Most of the volume of normal human blood is composed of:
red cells
hemoglobin
plasma
white cells
The relatively clear liquid medium which carries the other cells of blood is called:
plasma
antibody
lipid
chyme
Which of the following statements is true concerning human blood?
The blood of all normal humans contains red and white cells, platelets, and plasma.
Some human populations normally lack the ability to produce plasma.
Proteins are not normal components of human blood.
Human blood can be transfused to other people directly without any complications
Which of the following statements regarding the platelets is correct?
In the blood they are present in greater number than red cells.
They secrete the main clotting factors.
They aggregate in the presence of prostacyclin.
They will adhere to the walls of damaged blood vessels.
