GROSS ANATOMY

Detailed explanation-1: -Here, the humerus and femur rotate around their long axis, which moves the anterior surface of the arm or thigh either toward or away from the midline of the body. Movement that brings the anterior surface of the limb toward the midline of the body is called medial (internal) rotation.

Detailed explanation-2: -Abduction/Adduction A movement of the body part back toward the midline (i.e., to the anatomical position) is known as adduction.

Detailed explanation-3: -Medial rotation is a term describing a specific anatomical motion. The term medial in anatomy refers to moving closer to the median plane, or central vertical divider, of the body. Thus, a medial rotation is the movement of a limb or muscle group toward the center of the body.

Detailed explanation-4: -Adduction: moving toward the body’s midline. The gluteus medius, gluteus minimus, tensor fasciae latae, and sartorius are muscles that abduct the hip. The pectineus, adductor longus, adductor brevis, adductor magnus, and gracilis adduct the hip.

Detailed explanation-5: -Rotation happens in the transverse plane around a vertical (longitudinal) axis that happens relative to the median plane. Medial rotation involves bringing the anatomical structure closer to the median plane, while lateral rotation involves moving it further away.