What is tropomyosin?
A. a protein found along the groove of the F-actin double helix
B. a T tubule and two adjacent terminal cisternae
C. the combination of myosin heads with active sites on actin molecules
D. the movement of myosin head while attached to actin myofilament
E. after exercise, the oxygen taken in that exceeds the oxygen required for resting metabolism
A
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The largest fat pad of the elbow is over the
A. olecranon fossa. B. radial fossa. C. coronoid fossa. D. None of the above
Growth hormone promotes closure of the epiphyseal plate at adolescence
Indicate whether the statement is true or false
What is the proper arrangement of the four structures listed below into the order in which sperm pass from the testis to the urethral meatus? 1. ductus deferens 2. urethra 3. ejaculatory duct 4. epididymis
A) 1, 3, 4, 2 B) 4, 3, 1, 2 C) 4, 1, 2, 3 D) 4, 1, 3, 2 E) 1, 4, 3, 2
Which of the following is an effect of aging on the respiratory system?
A. Gas exchange in the lungs remains unchanged. B. Minute ventilation rates increase. C. Residual volume increases. D. Vital capacity is unchanged.