MUSCULAR SYSTEM:

Skeletal Muscle

Types of Ordinary Body Movements

Flexion

Extension

Rotation

Abduction

Circumduction

Types of Special Body Movements

Dorsifelxion

Plantar flexion

Inversion

Eversion

Supination

Pronation

Opposition

Types of Muscles

Prime mover – muscle with the major responsibility for a certain movement

Antagonist – muscle that opposes or reverses a prime mover

Synergist – muscle that aids a prime mover in a movement and helps prevent rotation

Fixator – stabilizes the origin of a prime mover

Naming of Skeletal Muscles

Location of the muscle

FRONTALIS – Frontal Bone

LATERALIS – Lateral Or On The Side

TIBIALIS ANTERIOR – Front Of Tibia

FIBULARIS LONGUS – Near Fibula

SUPRA – Above

INFRA – Below

SUB - Underneath

Shape of the muscle

DELTOID – Triangle

LATISSIMUS – Wide

TERES - Round

TRAPEZIUS – Trapezoid

SERRATUS – Saw-Toothe

ORBICULARIS – Circular

Size of the muscle

MAXIMUS – Largest

MINIMIS – Smallest

VASTUS – Huge

LONGUS – Longest

BREVIS – Short

MAJOR – Large

MINOR – Small

Direction/Orientation of the muscle fibers/cells

RECTUS – straight, parallel to the muscle’s long axis

Ex: Rectus Abdominis

TRANSVERSUS– transverse, at right angles to the muscle’s long axis

OBLIQUE – diagonal

Action of the muscle

FLEXOR– Flexes

ABDUCTOR – Abducts

EXTENSOR – Extends

LEVATOR – Lifts

Number of Origins

BICEPS – Two Origins

TRICEPS – Three Origins

QUADRICEPS – Four Origins

Origin and Insertion:

Ex: STERNO CLEIDO MASTOID

Origin: Sternum Passes: Clavicle Insertion: Mastoid (Temporal Bone)