Which term refers to shrinkage of tissue due to a decrease in cell size?
A. Apoptosis
B. Atrophy
C. Hypertrophy
D. Necrosis
Answer: B
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Put these phases of the cardiac cycle in the correct order.
1. opening of the semilunar valves 2. isovolumic contraction 3. beginning of atrial systole 4. closure of the AV valves 5. completion of ventricular filling 6. beginning of ventricular systole 7. ventricular relaxation 8. ventricular ejection A) 3, 5, 6, 4, 2, 1, 8, 7 B) 3, 2, 6, 1, 4, 5, 8, 7 C) 3, 2, 6, 4, 5, 8, 7, 1 D) 4, 5, 1, 2, 7, 8, 3, 6 E) 3, 5, 6, 1, 8, 4, 2, 7
The hypothalamohypophysial portal system carries hormones from the ________.
A. anterior pituitary to the hypothalamus B. posterior pituitary to the hypothalamus C. hypothalamus to the posterior pituitary D. hypothalamus to the anterior pituitary E. anterior pituitary to posterior pituitary
The connective tissue with a matrix of calcium salts and some collagen fibers is ________.
A. elastic cartilage B. hyaline cartilage C. fibrocartilage D. bone
The spinal cord terminates at an opening in the sacrum called the
A. inferior sacral foramen. B. sacral hiatus. C. anterior sacral foramen. D. posterior sacral foramen. E. sacral canal.