All of the following are formed elements that make up blood EXCEPT ________
A) erythrocytes
B) plasma
C) leukocytes
D) platelets
B
Explanation:
A) Erythrocytes are red blood cells.
C) Leukocytes are white blood cells.
D) Platelets are involved in the formation of blood clots.
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A) metabolic alkalosis. B) metabolic acidosis. C) respiratory alkalosis. D) respiratory acidosis. E) None of the answers are correct.
The extrafollicular cells of the thyroid gland secrete calcitonin
Indicate whether the statement is true or false
What is not true about the cerebral arterial circle (circle of Willis)?
A) It surrounds the brain stem. B) It may provide an alternative set of pathways for blood to reach brain tissue. C) It is an example of an anastomosis. D) It lies at the base of the brain.
What protein is the principal component of skeletal muscle thick filaments?
A. Tropomyosin B. Troponin C. Calmodulin D. Myosin E. Actin