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A heart murmur is usually caused by ____ ____.

During resting (when no impulses are being received) what ion is most commonly found inside the nerve cell?

Endosymbiont theory proposes that 

Lateral epicondylitis is a condition that occurs less commonly than medial epicondylitis.

What portion of the blood is involved in the process of clotting?

Which type of bone cells live in lacunae?

What causes the “lub” sound heard during a heartbeat?

The femoral nerve innervates all of the following muscles except:

The lungs lie in a sealed thoracic cavity. What forms the floor of this cavity?

It is possible that a few key mutations in homeotic genes might produce new species