How do the lymphatic and immune systems contribute to osteoporosis?
A. Excessive smoking lowers estrogen levels, which increases bone loss.
B. Immune cells resist infections and release chemicals that promote tissue repair.
C. Calcium ions released from the bones are excreted.
D. Lack of exposure to sunlight reduces vitamin D production and decreases calcium absorption.
E. Decreased estrogen levels following menopause contribute to the disease.
B
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Which of the following muscles is not a muscle of the head and neck?
a. frontal b. masseter c. latissimus dorsi d. zygomaticus
Which accessory gland neutralizes the acidity of semen before it is ejaculated?
A) bulbo-urethral gland B) prostate gland C) seminal vesicles D) None of the listed responses is correct.
Nuclear division in the specialized case of gametes is accomplished by meiosis, in which only a half set of genetic information is distributed to each of four new daughter cells
a. True b. False Indicate whether the statement is true or false
At a constant temperature, the pressure that a gas exerts depends on the volume that it occupies
Indicate whether the statement is true or false