___________ steroids are designed to promote musclegrowth but have harmful side effects.

a contraction in which a muscle shortens in length is called an ____________contraction.

The two panels below are showing the beginning stages of a cross-bridge formation. Compare panel 1 to panel 2 Describe what has happened and how it has changed the positioning of the thin filament. Panel 1 Panel 2

The biceps reflex tests a muscle spindle reflex arc (like the patellar reflex).  The biceps brachii is innervated by the musculocutaneous nerve and the triceps brachii is innervated by the radial nerve.  When the biceps tendon is tapped with a hammer, action potential generation ___________ in the musculocutaneous nerve and _____________ in the radial nerve.   Select one: a. Increases; decreases b. Decreases; increases c. Decreases; decreases d. Increases; increases