What type of cells have the potential to differentiate to form adult cell types?
A. mast cells
B. adipocytes
C. stem cells
D. osteoclast
E. macrophages
C
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Alcohol inhibits the secretion of ________
A) parathyroid hormone (PTH) B) antidiuretic hormone (ADH) C) glucagon D) oxytocin E) prolactin (PRL)
This figure illustrates bone growth in length at the Epiphyseal Plate. What is zone "A"?
A. bone of diaphysis B. zone of hypertrophy C. zone of calcification D. zone of proliferation E. zone of resting cartilage
Since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber
A) lengthens. B) shortens. C) strengthens. D) weakens. E) pulls from the middle.
Which of the following is NOT true of isotopes of a given atom?
A. They have the same number of protons. B. They have the same number of neutrons. C. They have different atomic masses. D. All are not true regarding isotopes of a given atom.