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The magnitude of contractile (active) force in skeletal muscle is directly proportional to the number of cross-bridges formed.

Muscle force varies with muscle length.

Particle‐mediated or “gene gun” technology has been developed as a nonviral method for gene transfer into various mammalian tissues. Gene delivery is achieved by physical force that launches DNA‐coated gold particles towards targeted cells. Consider a gold particle that is launched at an angle of 25° to the horizontal with an initial resultant velocity of 25 m/sec. Find both the vertical and horizontal components of the initial velocity vector. Clearly label your answer for the vertical and horizontal components in the text box below.

At the longest muscle lengths, most of the force measured in the muscle is due to crossbridge connection.

The dust storms that devastated the plains resulted from all of the following EXCEPT …

Given angle α = 55°, opposite side = 4 m in a right triangle, find the hypotenuse and adjacent side lengths.

The muscle torque is greater than the load (resistance) torque during a concentric contraction.

Consider the leg positions of Gymnast A and Gymnast B. First, state the anatomical plane you are viewing the gymnasts in. Second, state which hip motion is depicted when going from A to B. Third, describe the active and passive insufficiencies that Gymnast A must overcome to go from the posture in A to the posture in B.

The larger wheels on a wheelchair are 0.62 m in diameter. If these wheels take 0.5 seconds to rotate one full revolution, what is the tangential velocity of the wheelchair?

During the Great Depression, the federal government began to deport …