Exam 21: How Animals Move

In the accompanying figure, the structure labeled "D" is the ____.

Bones at synovial joints are held in place by ____.

The ____ bone is the largest in the human body.

In a muscle contraction event, ____ causes the release of calcium from the sarcoplasmic reticulum.

In muscle contraction, the breaking of the cross-bridge between actin and myosin is caused by ____.

Myoglobin supplies ____ to fuel muscle activity.

The sliding-filament model of muscle contraction is described by the action of ____ pulling ____ inward.

The regulatory protein responsible for slowing the production of muscle proteins is ____.

Gibbons are able to swing through the trees by their arms thanks to ____ joints.

Which hormone increases muscle mass?

Humans have ____ vertebrae.

For muscles to contract, ____ ions need to be released from the sarcoplasmic reticulum.

The bones of the vertebral column, head, and rib cage comprise the ____.

The thick filaments of a sarcomere are composed of ____, and the thin filaments are composed of ____.

Relaxed muscles, such as those generated by prolonged sitting, ____, resulting in ____.

All components of a muscle have ____ orientation, resulting in ____.

In humans, the ____ bone is found in the pectoral girdle.

The sternum is a major site of red blood cell formation; therefore, the bones in the sternum must be ____ bones.