At any given moment, the systematic circulation contains about __________ percent of the total blood volume.
a. 10
b. 51
c. 71
d. 84
Answer: d. 84
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Which of the following is not found in the epidermis?
A. Melanocytes B. Fibroblasts C. Stem cells D. Keratinocytes E. Tactile cells
A young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college. He must rest for three months and then gradually begin exercising again. The skeletal muscles in his lower limbs decrease in size during this prolonged period of inactivity. The organelles that break down his muscle proteins are
A. ribosomes. B. centrosomes. C. peroxisomes. D. lysosomes.
Muscles comprising the quadriceps group include the
A) semitendinosus, biceps femoris, rectus femoris, and vastus medialis. B) rectus femoris, tibialis anterior, soleus, and adductor longus. C) peroneus, gastrocnemius, vastus intermedius, and rectus femoris. D) iliopsoas, gracilis, adductor magnus, biceps femoris, and gracilis. E) rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis.
The origins of the lateral head of the gastrocnemius muscle are the __________.
A. medial condyle and posterior surface of the femur B. patellar surface and posterior surface of the femur C. patellar surface and anterior surface of the femur D. lateral condyle and posterior surface of the femur