Myology 3D

Myology 3D

Grade 12 Kinesiology (PSK4U) muscle atlas
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Anatomical terms

Direction

Anterior / PosteriorToward the front / back of the body
Superior / InferiorToward the head / feet
Medial / LateralToward / away from the midline
Proximal / DistalCloser to / farther from the trunk (limbs)
Superficial / DeepCloser to / farther from the skin
Origin / InsertionUsually the fixed, proximal attachment / the moving, distal attachment

Planes and axes

Sagittal planeDivides left and right. Flexion and extension. Axis: frontal (mediolateral)
Frontal planeDivides front and back. Abduction, adduction, lateral flexion. Axis: sagittal (anteroposterior)
Transverse planeDivides top and bottom. Rotation, pronation, supination. Axis: longitudinal (vertical)

Movements

Flexion / ExtensionDecrease / increase the joint angle
Abduction / AdductionMove away from / toward the midline
Medial / Lateral rotationTurn the front of a limb toward / away from the midline
Pronation / SupinationTurn the palm down (back) / up (forward)
Dorsiflexion / PlantarflexionToes up toward the shin / point the foot down
Inversion / EversionSole turns inward / outward
Elevation / DepressionMove up / down (scapula, mandible)
Protraction / RetractionMove forward / backward (scapula, mandible)
Upward / Downward rotationGlenoid fossa of the scapula turns up / down

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      About Myology 3D

      An interactive muscle atlas for Ontario Grade 12 Kinesiology (PSK4U). Click any muscle to see its origin, insertion, actions and nerve supply. Press an action to watch the joint move. The origin is marked in green and the insertion in blue on the bone.

      Movement demonstrations use a simplified skeleton rig. They show the direction of each action, not exact joint mechanics. Where textbooks disagree on a detail, check your course text.

      Credits

      3D anatomy: Z-Anatomy (CC BY-SA 4.0), built on BodyParts3D, © The Database Center for Life Science, licensed under CC Attribution-Share Alike 2.1 Japan. Meshes were simplified and rigged for the web. This page is shared under CC BY-SA 4.0.

      Rendering: three.js. Reference links point to Kenhub, TeachMeAnatomy and Wikipedia.