A deficiency of which of the following intermediate cells would result in a marked increase in the clotting time of blood?
A. Lymphoblast
B. Megakaryoblast
C. Monoblast
D. Proerythroblast
E. Myeloblast
Answer: B
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Specialized animal cells that have contractile properties are called __________, or muscle cells
Fill in the blank with the correct word.
Air enters the respiratory passageways when the pressure inside the lungs is lower than the:
blood pressure atmospheric pressure abdominal pressure arterial pressure all of the choices are correct
Which of the following is an example of simple squamous epithelial tissue?
a) lining/gastrointestinal tract b) lining/blood vessels c) epidermis/skin d) kidney tubules
Medicines that overstimulate respiratory centers in the brain lead to
A. respiratory acidosis. B. respiratory alkalosis. C. metabolic acidosis. D. metabolic alkalosis.