09/03/2026
ANATOMICAL DIRECTIONS & PLANES — THE LANGUAGE OF THE HUMAN BODY
Understanding anatomy becomes much easier when you know how to describe where one structure is in relation to another. Anatomical directional terms provide a universal language used in anatomy, physiotherapy, medicine, sports science, and biomechanics.
🔹 MEDIAL vs LATERAL
Medial means closer to the body's midline, while lateral means farther away from the midline.
👉 The nose is medial to the eyes, while the ears are lateral to the eyes.
🔹 PROXIMAL vs DISTAL
These terms are commonly used for the limbs.
Proximal = closer to the point of attachment or trunk.
Distal = farther from the point of attachment.
👉 The elbow is proximal to the wrist, while the fingers are distal to the wrist.
🔹 CRANIAL vs CAUDAL
Cranial (superior) means toward the head.
Caudal (inferior) means toward the feet.
👉 The chest is cranial to the abdomen, while the pelvis is caudal to the abdomen.
🔹 VENTRAL vs DORSAL
Ventral (anterior) refers toward the front of the body.
Dorsal (posterior) refers toward the back.
👉 The sternum is ventral to the heart, while the vertebral column is dorsal to it.
📐 THE THREE PRIMARY ANATOMICAL PLANES
🟢 Sagittal Plane
Divides the body into left and right portions. A midsagittal plane divides it into equal halves.
🔵 Frontal/Coronal Plane
Divides the body into anterior (front) and posterior (back) portions.
🟣 Transverse/Horizontal Plane
Divides the body into superior and inferior portions.
💡 Why does this matter in biomechanics?
Movements occur within anatomical planes and around specific axes. For example, flexion and extension primarily occur in the sagittal plane, abduction and adduction in the frontal plane, and rotation primarily in the transverse plane.
Knowing these terms helps you communicate movement, posture, joint position, injury location, and biomechanical analysis with precision.
📌 Save this post for your anatomy & biomechanics revision!
