The male hormone(s) secreted by the testes is (are)
A. progesterone.
B. gonadotropin.
C. testosterone.
D. steroid Y.
E. both testosterone and gonadotropin.
Answer: C
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Which of the following acts in the same direction as body motion?
A. wave drag B. propulsive drag C. skin friction D. all of the above
__________ are small, hair-like feathers with barbs along the shaft that help guide the bird in flight and reposition the feathers
Fill in the blank(s) with correct word
The top part of the equine rump is called the:
A) winking B) tush C) croup D) chestnut
Which statement about the female pelvis is false?
A. The pelvis is generally less massive with smoother surfaces. B. The pubic arch (subpubic angle) is usually greater than 100 degrees. C. The pelvic outlet is larger. D. The sacrum is wider than in males. E. The greater sciatic notch is narrower than in males.