Chapter 2, Problem 8P

What aspect of creatine phosphate allows it to supply energy to muscles? ATPase activity phosphate bonds carbon bonds hydrogen bonds

Awareness of a stimulus is called a ________.

Electromyography is a diagnostic test that measures the electrical activity within muscle fibers. _______________ _______________ _______________ _______________

Which of the following is unique to the muscles of facial expression? They all originate from the scalp musculature. They insert onto the cartilage found around the face. They only insert onto the facial bones. They insert into the skin.

What movements occur at the hip joint and knees as you bend down to pick something up?

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

Which component is responsible for initially stimulating a muscle contraction? a. proteins b. electrochemical signals c. plasma membranes d. striations

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.

Match each of the following terms with the correct meaning. ________ Caudal a. Lying on the back, face upwards b. Farther from the point of attachment c. The front of the body or body part d. Toward the tail end of the spine