One of the characteristics of muscle tissue is that is has extensibility. Which of the following best describes this characteristic?
A) Muscles contract when stimulated.
B) Muscles have local electrical charges that move along the muscle fiber.
C) Muscles only pull; they cannot push.
D) Muscles can stretch when needed.
Ans: D) Muscles can stretch when needed.
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The function of the prostate gland is to
A. produce 60% of the seminal fluid. B. prevent urine from mixing with semen. C. contribute to the seminal fluid and lubricate the end of the penis during intercourse. D. None of the above
Jason fractured his pisiform bone in an accident. What part of his body is injured?
A) wrist B) ankle C) leg D) skull E) shoulder
Twelve-year old Madeline has not yet experienced a bone growth spurt, meaning she is not yet producing which particular chemicals necessary for this to occur?
A. Parathyroid hormone B. Sex hormones C. Growth hormone D. Calcitonin E. Vitamin D
Flexion of the hip is a movement produced by the ________.
A. gluteus medius and gluteus maximus B. piriformis and quadratus femoris C. psoas major and iliacus D. gluteus maximus and vastus lateralis E. sartorius and rectus femoris