What does Spinatus mean in muscles?
‘-Spinatus’ comes from the root word ‘spine,’ which is a skeletal structure that means a small and slender projection. Your shoulder blade (scapula) has a small projection on it called the spine of scapula. The supraspinatus muscle sits directly on top of this structure.
What does the supraspinatus muscle control?
The supraspinatus muscle originates from the supraspinous fossa of the scapula, passes under the acromion, and inserts on the superior facet of the greater tubercle of the humerus. It is responsible for the initiation of arm abduction and is in control of the motion up to the first 15 degrees of abduction.
What does Spinatus refer to?
Spinatus refers to the spine of the scapula, which is the ridge on the scapula that is almost horizontal.
What do the infraspinatus muscles do?
The infraspinatus muscle’s action on the shoulder is primarily through its function as a rotator cuff muscle providing glenohumeral stability. The rotator cuff applies compression upon the head of the humerus that allows for the stabilization of the humeral head during shoulder abduction.
What causes supraspinatus tendinosis?
Supraspinatus tendinopathy is a common source of shoulder pain in athletes that participate in overhead sports (handball, volleyball, tennis, baseball). This tendinopathy is in most cases caused by an impingement of the supraspinatus tendon on the acromion as it passes between the acromion and the humeral head.
How do I strengthen my supraspinatus?
Using the criteria that the best exercise to isolate and strengthen the supraspinatus should maximize supraspinatus activity while minimizing deltoid activity, the researchers determined that shoulder external rotation at 0° of abduction with an elastic band and prone external rotation were preferable.
What causes tear of the supraspinatus tendon?
Supraspinatus tear can be caused by lifting something too heavy, falling on your arm, or dislocating your shoulder. However, host cases are the result of the tendon wearing down over time, which is known as a degenerative tear.
What exercise works the infraspinatus?
The side-lying wiper exercise is a novel and effective exercise for selectively activating the infraspinatus muscle while minimizing the use of the posterior deltoid and middle trapezius muscles.
What type of muscle is infraspinatus?
Infraspinatus is a thick triangular muscle that occupies the majority of the dorsal surface of the scapula….Infraspinatus muscle.
| Origin | Infraspinous fossa of scapula |
|---|---|
| Action | Shoulder joint: Arm external rotation; Stabilizes humeral head in glenoid cavity |
| Innervation | Suprascapular nerve (C5, C6) |
Where is the supraspinatus muscle located in the back?
The supraspinatus (plural supraspinati) is a relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.
Where are the muscles of the spinalis located?
Spinalis muscles are slender, flat fascicles of varying lengths that occupy the medial aspect of the erector spinae column of muscles.
Where are the erector spinae muscles located in the spine?
The erector spinae muscle group runs the length of the spine parallel to the vertebral column, occupying the intermediate layer of the back muscles. It has attachments to the skull, cervical, thoracic and lumbar vertebrae, the ileum and the sacrum.
Where do muscle fibers originate in the spine?
These muscle fibers originate from the spinous processes of T11 – L2 vertebrae and travel superiorly to attach along the spinous processes of T2 – T8 vertebrae. If you’re having trouble remembering the parts of the vertebrae, you can use the those study unites which contains articles, videos, and quizzes to refine your knowledge.
https://www.youtube.com/watch?v=ssB4HvGetm8