Latissimus dorsi muscle
|Antagonist||Deltoid and trapezius muscle|
|Latin||Musculus latissimus dorsi|
- 1 What are the opposing muscles?
- 2 What is the opposing muscle group for the back muscles?
- 3 What 2 other muscles does the latissimus dorsi work with?
- 4 What muscle action are pectoralis major and latissimus dorsi antagonists for?
- 5 What is an example of an antagonist muscle?
- 6 What is the opposing muscle of the core?
- 7 What is the opposing muscle for shoulders?
- 8 What does the latissimus dorsi connect to?
- 9 What do lats help with?
- 10 Where do the lats connect?
- 11 What is the action of the pectoralis major muscle?
What are the opposing muscles?
Opposing or antagonist muscles are the muscles that do the opposite of the muscle that is working. For example, when a person performs a bicep curl, the elbow flexes as the bicep shortens. The opposing muscle group in this case is the triceps, which lengthen or elongate in order to allow this movement at the elbow.
What is the opposing muscle group for the back muscles?
The muscles opposing the movement become the antagonists. In a movement, like the back extension, the muscles that extend the back are the agonist. The muscles that produce the opposite movement, which is back flexion, are the abdominals. These two groups of muscles are important because they stabilize your spine.
What 2 other muscles does the latissimus dorsi work with?
Latissimus dorsi works collaboratively with the teres major and pectoralis major to perform actions of the upper extremity. Together, these muscles will work to adduct, medially rotate and extend the arm at the glenohumeral joint.
What muscle action are pectoralis major and latissimus dorsi antagonists for?
The pectoralis major acts as an antagonist to the middle deltoid anteriorly, whilst the latissimus dorsi acts as the antagonist posteriorly. Depending on their location and their points of insertion, the various muscles that act on the upper arm also assist medial and lateral rotation of the shoulder joint.
What is an example of an antagonist muscle?
The most common example of antagonistic muscles are the biceps and the triceps. As the agonist muscle contracts, the antagonist relaxes, helping to manage and regulate the movement of the former.
What is the opposing muscle of the core?
Since the transversus abdominis, external oblique, and rectus abdominis flex your back, they are antagonists to your back extensor muscles. Only the above three abdominal muscles make up the antagonist group for your back extension. The only muscle that is left out is the internal abdominal oblique.
What is the opposing muscle for shoulders?
antagonistic: latissimus dorsi, posterior deltoid, pectoralis major, pectoralis minor.
What does the latissimus dorsi connect to?
Because the latissimus dorsi connects the spine to the humerus, tightness in this muscle can manifest as either sub-optimal glenohumeral joint (shoulder) function which leads to chronic pain or tendinitis in the tendinous fasciae connecting the latissimus dorsi to the thoracic and lumbar spine.
What do lats help with?
The latissimus dorsi muscles, known as the lats, are the large V-shaped muscles that connect your arms to your vertebral column. They help protect and stabilize your spine while providing shoulder and back strength. Your lats also help with shoulder and arm movement and support good posture.
Where do the lats connect?
The lats connect the pelvis to the upper arm bone to create medial rotation, adduction and extension at the glenohumeral joint, which is the ball and socket joint more commonly known as the shoulder joint. The actions of the latissimus dorsi are easy to remember if you can remember that it’s the handcuff muscle.
What is the action of the pectoralis major muscle?
The pectoralis major extends across the upper part of the chest and is attached to a ridge at the rear of the humerus (the bone of the upper arm). Its major actions are adduction, or depression, of the arm (in opposition to the action of the deltoideus muscle) and rotation of the arm forward about the axis of the body.