Quadratus
Quadratus
Quadratus (pronunciation: kwɒˈdreɪtəs) is a term used in anatomy to refer to muscles that are quadrilateral in shape. The term is derived from the Latin word 'quadratus', meaning 'square'.
There are several muscles in the human body that are referred to as quadratus, including:
- Quadratus Lumborum: A muscle in the lower back on either side of the lumbar spine. It is part of the posterior abdominal wall and plays a crucial role in stabilizing the lumbar spine and the pelvis.
- Quadratus Femoris: A flat, quadrilateral skeletal muscle located on the posterior side of the hip joint. It is a strong external rotator and adductor of the thigh, but also plays a vital role in stabilizing the hip joint.
- Quadratus Plantae: Located in the foot, this muscle is involved in the flexion of the toes.
Etymology
The term 'quadratus' is derived from the Latin word 'quadrus', which means 'square'. This is in reference to the square or quadrilateral shape of these muscles.
Related Terms
- Muscle: A tissue composed of cells or fibers, the contraction of which produces movement in the body.
- Anatomy: The branch of science concerned with the bodily structure of humans, animals, and other living organisms.
- Lumbar: Relating to the lower part of the back.
- Pelvis: The large bony structure near the base of the spine to which the hind limbs or legs are attached in humans and many other vertebrates.
- Hip Joint: The joint between the femur and the acetabulum of the pelvis.
- Thigh: The part of the human leg between the hip and the knee.
- Foot: The lower extremity of the leg below the ankle, on which a person stands or walks.
- Flexion: The action of bending or the condition of being bent.
See Also
External links
- Medical encyclopedia article on Quadratus
- Wikipedia's article - Quadratus
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