What muscles are extensors of the arm?
Muscles of both the upper arm and forearm control movement of the forearm. The biceps brachii flex the forearm and work with the supinator of the forearm to rotate it so the palm faces upward. The triceps brachii extend the forearm.
Where are the spinal extensor muscles?
The extensor muscles are the muscles found right along your spine. These muscles allow you to bend over then stand up, lift objects, and stand upright. The main portion of the erector spinae muscles can be found in the lower back, and work in conjunction with the gluteal muscles.
Which muscle is the main extensor of the spine?
Thoracic Erector Spinae group
1. Thoracic Erector Spinae group ie Iliocostalis; Longissimus; Spinalis– the main extensor (backward bending) muscle of the thoracic spine, located on either side of the vertebral column. The erector spinae is most massive in the lumbar and thoracic regions.
What are the back extensor muscles?
Extensor muscles. Attached to the back of the spine, these muscles allow us to stand and lift objects. They include the large muscles in the lower back (erector spinae), which help hold up the spine, and gluteal muscles. Flexor muscles.
What are the neck extensor muscles?
Deep Neck Extensors: The deep cervical extensors (semispinalis cevicis, multifidus, and rotators) along with the cranio-cervical extensors (rectus capitis posterior major/minor and obliquus capitis superior/inferior) are KEY MUSCLES for cervical spine segmental support due to their relatively small moment arms.
What are the extensor muscles of the wrist?
Summary table
| Muscle | Origin | Action |
|---|---|---|
| Extensor carpi radialis longus | lateral supracondylar ridge | extends, abducts wrist |
| Extensor carpi radialis brevis | common extensor tendon | |
| Extensor digitorum | extends fingers, wrist | |
| Extensor digiti minimi | extends little finger at all joints |
What are examples of extensor muscles?
Examples of extensor muscles include the latissimus dorsi, teres major, and triceps brachii of the upper limb and the biceps femoris, gluteus maximus, and quadriceps of the lower limb.