Which of the following muscles extends the knee?
A. Rectus femoris
B. Gracilis
C. Adductor magnus
D. Sartorius
Ans: A. Rectus femoris
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Which vessel in the figure is labeled "A" ?
a) right subclavian artery b) right radial artery c) right common carotid artery d) right brachial artery e) right axillary artery
A 25-year-old medical student in good health develops severe pain in the area around her umbilicus. She com- plains of nausea and is taken to the emergency depart- ment. While there, the pain becomes more localized in the lower right quadrant of her abdomen and the physician diagnoses appendicitis. Which of the following nerves per- ceived pain in the area around the umbilicus and most likely carried the pain sensations to the central nervous system?
A. Inferior hypogastric nerves B. Lesser splanchnic nerves C. Pudendal nerves D. Superior hypogastric nerves E. Vagus nerves
A period of sustained muscle contraction is called ________
A) tetanus B) lockjaw C) incomplete tetanus D) muscle tension
When is the scrotum formed in the male?
A. 6 weeks B. 9 weeks C. 14 weeks D. 20 weeks