An insufficient heart valve is often called a leaky valve because it lets blood leak back through when the valve should be closed
a. True
b. False
Indicate whether the statement is true or false
True
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Which muscle abducts and medially rotates the thigh, and shifts the weight from one foot to the other when walking?
A. Gluteus maximus B. Gluteus medius C. Piriformis D. Gemellus superior E. Quadratus femoris
The distal section of the small intestine is the __________.
Fill in the blank(s) with the appropriate word(s).
The beginning of a true capillary is surrounded by a precapillary sphincter. The opening and closing of precapillary sphincters is controlled by ________.
A. sympathetic nervous system B. parasympathetic nervous system C. local chemical conditions. D. blood pressure in the metarteriole
Which artery supplies the soleus muscle?
A. Medial plantar artery B. Femoral artery C. Deep plantar arch D. Posterior tibial artery E. Fibular artery