Which of the following can increase base of support?
A. widen stance
B. add more points of contact (i.e. 3-point stance to 4-point stance)
C. both A and B
D. none of the above
C. both A and B
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The basic difference between spermatogenesis and oogenesis is that ________
A) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell B) during spermatogenesis two more polar bodies are produced C) the mature ovum is n, while the sperm is 2n D) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only
As blood is pumped out of the heart and into the major arteries leaving the heart, it
A. pushes against the atrioventricular valves and opens them. B. fills the cusps of the semilunar valves, causing them to expand and block the backflow of blood C. pushes against the semilunar valves and opens them. D. fills the cusps of the atrioventricular valve causing opening of the bicuspid and closure of the tricuspid. E. pushes against the semilunar valves and closes them.
Which cells produce growth hormone?
a. somatotropes b. thryrotropes c. corticotropes d. gonadotropes e. lactotropes
Which of the following is one of the phases of swallowing?
A. Pharyngeal B. Segmentation C. Reflux D. Peristalsis