Chapter 3, Problem 1WS

A band of fibers that holds structures together abnormally is a/an______________. These bands can form as the result of an injury or surgery. adhesion aponeurosis atrophy contracture

Skeletal muscle contraction requires _________. a. calcium ions b. ATP c. arrival of a nerve impulse d. all of the above

Watch this video (http://openstaxcollege.org/l/shoulderjoint1) for a tutorial on the anatomy of the shoulder joint. What movements are available at the shoulder joint?

Figure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.

Watch this video (http://openstaxcollege.org/l/hipjoint2) to learn more about the anatomy of the hip joint, including bones, joints, muscles, nerves, and blood vessels. Where is the articular cartilage thickest within the hip joint?

The _____ is the basic unit of muscle contraction. a. myofibril b. sarcomere c. muscle fiber d. myosin filament

The diaphragm is a ______ muscle. a. smooth b. skeletal c. dome-shaped d. a and c

The location of a muscles insertion and origin can determine ________. action the force of contraction muscle name the load a muscle can carry

You are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?