Skeletomuscular System

Front

The functional part of a muscle fiber that actually results in the shortening of the cell is called a ___

Back

sarcomere

Front

The connection of a myosin head to the attachment site on an actin filament is called a ___

Back

crossbridge

Front

Thick filaments are made up of what proteins?

Back

myosin

Front

Which of the following describe skeletal muscle?

Back

fatigue easily

Front

The enlarging of a muscle is called ____

Back

hypertrophy

Front

What is the primary function of the skeletal system?

Back

Support, movement, and protection of internal organs.

Front

What type of muscle is involuntary and found in the walls of hollow organs?

Back

Smooth muscle.

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions bind to troponin, causing a conformational change that allows myosin to bind to actin.

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 movement.

Front

What is the term for the muscle's ability to respond to stimuli?

Back

Excitability.