Muscular System Overview

Muscle tissue attached to bones, responsible for voluntary movements. Has visible stripes (striated) and is controlled by the somatic nervous system.

Muscle tissue found in internal organs (like the stomach and intestines). Doesn't have stripes (non-striated) and is involuntary.

Muscle tissue found only in the heart. It's involuntary and has a unique striped (striated) appearance.

The fixed point of attachment of a muscle to a bone or other structure.

The movable point of attachment of a muscle to a bone or other structure.

A tough, fibrous cord of connective tissue that attaches muscle to bone.

A broad, flat tendon that attaches to muscle and often spreads out over a broad area.

Muscle that is consciously controlled.

Muscle that functions without conscious control.

Skeletal muscles are categorized by the arrangement of their fibers into parallel and oblique types.

Muscle fibers are arranged parallel to the muscle's long axis.

A type of parallel muscle with four approximately equally-sized sides.

A type of parallel muslce with a long, flat, and narrow shape, resembling a strap.

Parallel muscle fibers have tendinous connective tissue within the muscle.

A type of parallel muscle that tapers at both ends, with a wider belly in the middle.

Muscle fibers arranged at an angle relative to the muscle's long axis.

Muscle fibers that attach obliquely to a central tendon.

Muscle fibers attached to one side of a tendon.

Muscle fibers attached to both sides of a tendon.

Muscle fibers attached to multiple tendons.

Muscle fibers that wrap around a central tendon from all sides.

Muscle fibers arranged in a triangular shape.

Muscle fibers arranged in a circular pattern, forming a sphincter.

Muscle that is broad at its origin and tapers to a narrower insertion.

The fleshy part of the muscle, containing the contractile tissue.

The fixed attachment point of skeletal muscle, usually the more stationary bone.

The attachment point of skeletal muscle that moves during contraction.

A sheet-like fibrous expansion of tendon.

Skeletal muscles

Striated muscles

Tendon

Fibers attached to one side of tendon

Fibers attaching to both sides of a tendon.

Wide muscle spreading to a point of attachment

Forms a ring around an opening or passage

Fibers run parallel to the tendon.

Fibers attaching in multiple directions and multiple sides to tendon.

Aponeurosis

Pectoralis major