Oxygen is transported in the blood as ________
A) bicarbonate ion
B) oxyhemoglobin
C) carbonic acid
D) deoxyhemoglobin
E) carbonic anhydrase
B
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Which cells are very sensitive to calcium levels in the blood?
A) muscle cells B) red blood cells C) cartilage cells D) fibroblasts E) epithelial cells
Where does the left ventricle send blood?
What will be an ideal response?
The tympanic cavity is a fluid-filled chamber in the middle ear.
Answer the following statement true (T) or false (F)
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