The Muscular System

These flashcards cover key concepts related to the muscular system, including muscle types, functions, and injuries.

Involuntary Muscles

Muscles that move automatically without conscious control, such as the heart and digestive system.

Voluntary Muscles

Muscles that move when consciously controlled, such as those used for walking and raising a hand.

Skeletal Muscle

Voluntary muscles connected to bones, responsible for body movements.

Cardiac Muscle

Involuntary muscle found only in the heart, characterized by its thick and strong structure.

Smooth Muscle

Involuntary muscle found in internal organs, like the digestive organs and blood vessels.

Tendons

Connective tissues that link muscles to bones, allowing movement when muscles contract.

Antagonistic Muscles

Pairs of muscles that work in opposition to each other, such as biceps and triceps.

Flexor Muscle

A muscle that causes a joint to bend.

Extensor Muscle

A muscle that causes a joint to straighten.

Muscle Spasm

A sudden, involuntary contraction of one or more muscles.

Posture

The position of the body in space when standing, sitting, walking, or lying down.

Muscle Strain

An injury that occurs when muscles are stretched or torn.