Ohlsen muscular system

Front

What is the fascicle arrangement that provides the most power?

Back

Bipennate fascicle arrangement provides the most power due to its ability to pack more muscle fibers into a given area.

Front

Which muscle is named for its size?

Back

Vastus lateralis is named for its size, as 'vastus' means large.

Front

What is the function of the flexor carpi radialis muscle?

Back

The flexor carpi radialis muscle is responsible for flexing the wrist and abducting the hand.

Front

Which muscle is named based on the arrangement of its fascicles?

Back

Orbicularis oculi is named for its circular fascicle arrangement.

Front

What ion is released by the sarcoplasmic reticulum to enable muscle contraction?

Back

Calcium ions (Ca+2) are released by the sarcoplasmic reticulum to allow actin-myosin cross bridges to form.

Front

What is the role of ATP in muscle contraction?

Back

ATP provides the energy required for muscle contraction and the detachment of myosin heads from actin.

Front

Define 'muscle origin'.

Back

The origin of a muscle is the fixed attachment point that does not move during contraction.

Front

Define 'muscle insertion'.

Back

The insertion of a muscle is the movable attachment point that is pulled toward the origin during contraction.

Front

What is the primary function of skeletal muscle?

Back

The primary function of skeletal muscle is to facilitate movement of the skeleton and maintain posture.

Front

What is the difference between isotonic and isometric contractions?

Back

Isotonic contractions involve muscle shortening with movement, while isometric contractions involve muscle tension without changing length.