Exam 10: Muscle Tissue

During which phase of the crossbridge cycle is ATP split into ADP and P_i?

Glycolysis is an

During skeletal muscle contraction, more force is created when more motor units are activated.

Which of the following structures has the active sites to which the heads of the thick filaments will bind?

The branch of the nervous system that helps govern smooth muscle contraction is the ________ nervous system.

Which letter is associated with the light band and contains thin filaments only?

The presence of mitochondria and myoglobin facilitate ________ respiration in muscle cells.

When a muscle is isometrically contracted, its length ________ change.

The return of a contracted muscle fiber to its resting length is an active (energy requiring) process.

The action potential of a muscle fiber occurs

Skeletal muscle contraction requires large amounts of energy in the form of ________ in order to complete the sequence of cyclic events that lead to sarcomere shortening.

What is the letter associated with the dark bands in a sarcomere?

The structure responsible for attaching muscle to bone is a

One of the most crucial factors in the development of fatigue appears to be a depletion of ATP.

Heavy breathing to compensate for an oxygen debt helps the body convert lactate to glucose.

Which protein makes up the thick filaments?

Which letter is associated with a zone (in a relaxed muscle) that is a little more lightly shaded because only thick filaments are present?

If someone is engaged in six minutes of vigorous exercise, nearly all of the ATP used is generated by phosphate transfer.

The plasma membrane of a skeletal muscle fiber is called the ________.

Phosphate transfer is used for