Hemoglobins get their color from
A) Heme.
B) Iron.
C) Protein.
D) Copper.
Answer: B
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Which of the following situations is most likely to result in stimulation of the adrenal medulla by the hypothalamus?
A. Relaxing after a big meal B. Taking an afternoon nap C. Walking on a beach D. Running from a bear
The ability of cardiac muscles to contract on their own is called ________.
A. autorhythmicity B. intercalation C. ischemia D. conduction
Systolic blood pressure is recorded
A. in arteries and is the minimum pressure that is recorded during ventricular relaxation. B. in arteries and is the maximal pressure that is recorded during ventricular contraction. C. in veins and is the maximal pressure recorded during atrial contraction. D. in veins and is the minimum pressure recorded during atrial relaxation. E. in both arteries and veins and is the maximum pressure recorded during diastole of the heart.
Which extracellular fiber does not develop properly in scurvy?
a. actin b. collagen c. elastin d. fibronectin e. myosin