Definition Of Extension In Anatomy

The process of straitening or the state of being strait. Medical definition of extension.

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Extension definition an act or instance of extending lengthening stretching out or enlarging the scope of something.

Definition of extension in anatomy. Flexion and extension are movements that take place within the sagittal plane and involve anterior or posterior movements of the body or limbs. A straightening of a flexed limb terminal care see extension of life. For example when standing up the knees are extended.

Extension of the hip and knee joints is necessary to stand up from the sitting position. Extension an adult sex toy placed around an erect penis which extends its length. An unbending movement around a joint in a limb as the knee or elbow that increases the angle between the bones of the limb at the joint compare flexion 1.

This is a limited range of motion usually performed between forty five and seventy degrees incorporating the antagonistic function of the neck flexors which comprises the deep musculature located in the anterior front part of the neck. Extension of the hip or shoulder moves the arm or leg backward. When the chin is against the chest the head is flexed and the trunk is flexed when a person leans forward.

Extension of the hip and knee joints is necessary to stand up from the sitting position. For the vertebral column flexion anterior flexion is an anterior forward bending of the neck or body while extension involves a posterior directed motion such as straightening from a flexed position or bending backward. The stretching of a fractured or dislocated limb so as to restore it to its natural position.

Extension of the neck relates to tilting the head backwards from a neutral position raising the chin until it is vertical or pointing upward at the ceiling. Extension the making larger of a thing imaging the broadening of a lesioneg a cancer or focus of infection as seen on an imaging technique orthopedics a in the angle between parts of a joint.

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