What element is necessary for the production of triiodothyronine (T3 ) and thyroxine (T4)?
A) iodine B) calcium C) magnesium D) potassium
Answer: A
You might also like to view...
Which is not a muscle involved in forming the rotator cuff of the shoulder joint?
A. subscapularis B. supraspinatus C. teres minor D. deltoid
ANP release is stimulated when
A) angiotensin I is converted to angiotensin II. B) the rate of sodium ion reabsorption is decreased. C) urinary water retention is too high. D) glomerular filtration is increased. E) blood volume and blood pressure are too high.
The serious decrease in the number of thrombocytes or blood platelets is a condition known as ____
a. leukemia b. thrombocytopenia c. erythrocytosis d. mononucleosis
A famous tag-team wrestler has a famous "sleeper hold" that he uses on his opponents. Using only a single digit on each hand, he presses on his opponent's neck until his opponent passes out. What are the structures on which he is pressing and what is the effect?
A. Carotid chemoreceptors; blood pressure increases B. Subclavian arteries; blood flow to brain is stopped C. Vertebral arteries; blood flow to brain is increased D. Baroreceptors in carotid sinus; peripheral vasodilation and decreased heart rate E. Jugular vein; blood flow back to heart is decreased