Elongated bursae that reduce friction and surround the tendons that cross the posterior and anterior surfaces of the wrist form___.

Explain the general relationship between the muscles that flex and extend the wrist, including their location on the body.

What three functions are accomplished by the muscles of the pelvic floor?

On which bones do the four rotator cuff muscles originate and insert?

A(n)____develops when an organ protrudes through an abnormal opening.

Assume you have a 10-lb weight in your right hand. Explain why it is easier to flex the right elbow when your forearm is supinated than when it is pronated.

Mr. Ahmadi, an out-of-shape 45-year-old man, was advised by his physician to lose weight and to exercise on a regular basis. He followed his diet faithfully and began to jog daily. One day, while on his morning jog, he heard a snapping sound that was immediately followed by a severe pain in his right lower calf. When his leg was examined, a gap was seen between his swollen upper calf region and his heel, and he was unable to plantar flex that ankle. What do you think happened? Why was the upper part of his calf swollen?

What class of lever system do the following activities describe?a. The soleus muscle plantar flexes the foot. b. The triceps brachii is strained while doing pushups.

Mary sees Jill coming toward her and immediately contracts her frontalis and procerus. She also contracts her right levator labii. Is Mary glad to see Jill? How can you tell?