Which of the following statements is true regarding parasympathetic tone?
A. It affects heart rate only after myocardial infarction.
B. It holds the resting heart rate below its intrinsic rate.
C. It accelerates the resting heart rate above its intrinsic rate.
D. It might increase or decrease heart rate depending on the situation.
E. It does not affect heart rate.
Answer: B
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Your doctor suggests that you increase your calcium intake to maintain your healthy bones. You do not understand why the doctor suggested this since you are a healthy 32-year-old. What was the doctor's reasoning?
A) The doctor is afraid that you will fall and break a bone. B) The increased calcium intake will then increase your vitamin D blood level. C) Calcium intake will increase the activity of osteoblasts, causing more bone to be formed. D) You are at an age where calcium levels in the bone may start to subside, producing weaker bones later in life. E) As you get older you are more prone to arthritis, and calcium reduces that problem.
With ____, the body fails to recognize and tolerate particular self-antigens
a. delayed hypersensitivity b. autoimmune disease c. immune-complex disease d. immediate hypersensitivity e. inflammation
Some cancer cells have mutations in the p53 gene, often called the guardian of the genome. It normally functions to repair damaged DNA or cause the elimination of severely altered cells. Which of the following functions is likely regulated by p53?
A. Anaerobic respiration B. Apoptosis C. Both "anaerobic respiration" and "translation" are correct. D. Translation
The cheekbones are anatomically termed the ________ bones.
Fill in the blank(s) with the appropriate word(s).