What is an example of an extensor muscle?
An extensor muscle is located on the back of the upper arm. An extensor muscle is a muscle that works to extend or straighten a body part, effectively enlarging the angle between body parts. Examples of extensor muscles include the muscles that straighten the elbow or the knee.
Which leg muscles are extensors?
There are four muscles in the anterior compartment of the leg: tibialis anterior, extensor digitorum longus, extensor hallucis longus and fibularis tertius….Extensor Hallucis Longus
- Attachments: Originates from the medial surface of the fibular shaft.
- Action: Extension of the great toe and dorsiflexion of the foot.
What are extension muscles?
Extension: increasing the angle between two bones (straightening a bend). The triceps brachii and anconeus are muscles that extend the elbow. The biceps brachii, brachialis, and brachioradialis flex the elbow. The gluteus medius, gluteus minimus, tensor fasciae latae, and sartorius are muscles that abduct the hip.
Are extensors anterior or posterior?
The posterior compartment of the forearm (or extensor compartment) contains twelve muscles which are chiefly responsible for extension of the wrist and digits, and supination of the forearm. It is separated from the anterior compartment by the interosseous membrane between the radius and ulna.
Is Brachioradialis anterior or posterior?
Despite the bulk of the muscle body being visible from the anterior aspect of the forearm, the brachioradialis is a posterior compartment muscle and consequently is innervated by the radial nerve.
Is posterior front or back?
Anterior and Posterior Anterior refers to the ‘front’, and posterior refers to the ‘back’.
What is an example of posterior?
Posterior or dorsal – back (example, the shoulder blades are located on the posterior side of the body). Medial – toward the midline of the body (example, the middle toe is located at the medial side of the foot).
Does posterior mean back?
Posterior comes from the Latin word posterus, meaning “coming after”. Posterior is often used as a technical term in biology and medicine to refer to the back side of things, and is the opposite of anterior, which refers to the front side.
Which plane divides the body into anterior and posterior?
Coronal plane – a vertical line which divides the body into a front (anterior) section and back (posterior) section.
What plane is a squat in?
Sagittal plane – a vertical plane that divides the body into left and right sides. Flexion and extension types of movement occur in this plane, eg kicking a football, chest pass in netball, walking, jumping, squatting.
What are the 5 body planes?
Anatomical Planes of the Body
| Anatomical Planes | |
|---|---|
| Coronal Plane or Frontal Plane | |
| Sagittal Plane or Lateral Plane | |
| Axial Plane or Transverse Plane | |
| Anatomical Terms | Direction |
What plane separates the head from the neck?
Sagittal Plane: A Sagittal Plane divides the body into right/left parts [head, neck, trunk, tail].
What is a coronal section?
A coronal or frontal plane divides the body into dorsal and ventral (back and front, or posterior and anterior) portions. A transverse plane, also known as an axial plane or cross-section, divides the body into cranial and caudal (head and tail) portions.
How many Parasagittal planes are in the human body?
The nine divisions are part of parasagittal and two transverse planes of body-centered around the navel. These divisions are important anatomically to determine the location of the organ within the abdomen and pelvic area.