Why do the testes descend into the scrotum?
A. Abdominal temperature is too high to produce viable sperm.
B. Abdominal temperature is too low to produce hormones.
C. There is not sufficient room in the abdomen.
D. There is no known reason.
Answer: A
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Suppose the pubic symphysis did not exist in the pelvic girdle and the two pubic bones were fused in the middle. Which of the following best describes the way the region would be affected if this joint was removed?
A. The femurs would have a limited range of motion without the high-mobility symphysis joint. B. Childbirth would have a high mortality risk because the pelvic girdle would be rigid and unmoving. C. The femurs would grind inside the acetabulum and cause pain because of a lack of cartilage. D. The pelvic girdle would be highly unstable because the pubic symphysis adds stability and rigidity.
The swallowing center is located in the
a. cerebral cortex. b. medulla. c. hypothalamus. d. throat. e. spinal cord.
What is the last process to occur in the epiphyseal plate of a long bone?
A) proliferation B) calcification C) ossification D) maturation
Rh-related problems occur in pregnant Rh- women carrying an Rh+ baby
Indicate whether the statement is true or false