Which of the following cells are responsible for nurturing sperm and controlling their development?
a. Sertoli cells
b. Zygotes
c. Leydig cells
d. Granulosa cells
Answer: a. Sertoli cells
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Important peritoneal folds do not include the ________.
A) omenta B) peritoneum C) mesentery D) round ligament
If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise
Which of the following would you expect to happen? A) The fiber would twitch uncontrollably due to excessive calcium bound to troponin. B) Myosin would be able to bind to the exposed binding sites on thin filaments but it would not be able to detach. C) Calcium would be transported to the sarcoplasmic reticulum therefore contractions would cease. D) No change would occur in a muscle that was relaxed to begin with.
The buccinator muscle is in the
A) buttocks. B) chest. C) cheek. D) bladder.
Which important mineral cannot be reabsorbed by the kidney?
a. sodium b. chloride c. potassium d. all of the above can be reabsorbed by the kidney