Function. The primary actions of this muscle include the stabilization, depression, abduction or protraction, internal rotation and downward rotation of the scapula. It elevates the ribs for deep inspiration when the pectoral girdle is fixed or elevated.
What is the action and innervation of the pectoralis minor?
Pectoralis Minor Both muscles form part of the anterior wall of the axilla region. Attachments: Originates from the 3rd-5th ribs and inserts into the coracoid process of the scapula. Function: Stabilises the scapula by drawing it anteroinferiorly against the thoracic wall. Innervation: Medial pectoral nerve.
What is the action of the pectoralis major? The pectoralis major’s primary functions are flexion, adduction, and internal rotation of the humerus. The pectoral major may colloquially be referred to as “pecs”, “pectoral muscle” or “chest muscle” due to it being the largest and most superficial muscle in the chest area.
How does the pectoralis minor move?
Pectoralis muscle has several functions, mostly related to the movement of the scapula. Together with the serratus posterior it acts in protraction of the scapula, i.e. moving it laterally and anteriorly against the ribcage. This movement is important in reaching the arm forward.
What does the pectoralis minor connect to?
The pectoralis minor lies, for the most part, beneath the pectoralis major, arising from the middle ribs and inserting into (attaching to) the scapula (shoulder blade). It aids in drawing the shoulder forward and downward (in opposition to the trapezius muscle).
What does pec minor pain feel like?
Symptoms of the pec minor injury include; Chest pain – can be burning and stabbing. Anterior shoulder pain. Pain in between shoulder blades in upper back. Pain and/or numbness through the inner arm, inside of elbow, into wrist, hand and 4th and 5th fingers.
What is the difference between pectoralis major and minor?
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). … The pectoralis minor lies, for the most part, beneath the pectoralis major, arising from the middle ribs and inserting into (attaching to) the scapula (shoulder blade).
What does pectoralis major pain feel like?
The first sensation felt when the pectoralis major muscle is torn is sudden pain. This pain is usually felt at the front of the armpit and is sometimes felt across the chest. At the same time you may also feel something ‘tearing’ in your chest. In minor tears you may be able to continue participating with slight pain.
How do you strengthen your pectoralis major?
- Getting started.
- Barbell bench press.
- Pec deck.
- Cable crossover.
- Chest press.
- Inclined dumbbell flies.
- Dips.
- Pushups.
How do you stretch the pectoralis muscle?
- Stand in an open doorway. Raise each arm up to the side, bent at 90-degree angles with palms forward. …
- Slowly step forward with one foot. Feel the stretch in your shoulders and chest. …
- Hold for 30 seconds. Step back and relax.
- Repeat 3 times, or as instructed.
How do you treat a pulled pectoralis minor?
In isolated pectoralis minor tendon tears, however, a conservative treatment approach is typically recommended. Recommend rest, ice, and anti-inflammatory medication for the first two to four weeks following the injury. The athlete may use an arm sling to increase comfort, but complete immobilization isn’t necessary.
How do you fix pectoralis minor pain?
- Above: Soft tissue massage of the pectrol muscle by experienced therapist.
- Above: Trigger point massage applied to the chest muscles by a specialist MSK therapist.
- Above: Soft tissue massage applied to the chest by an experienced therapist.
In which animal pectoralis minor muscle is found?
The pectoralis minor is inserted at the coracoid process of the scapula in bonobos and humans and at the supraspinatus tendon in our common chimpanzees, which has not previously been described.
What is the origin insertion action of pectoralis minor?
| Pectoralis minor | |
|---|---|
| Insertion | Medial border and superior surface of the coracoid process of the scapula |
| Artery | Pectoral branch of the thoracoacromial trunk |
| Nerve | Medial pectoral nerve (C8) |
| Actions | Stabilizes the scapula by drawing it inferiorly and anteriorly against the thoracic wall, raises ribs in inspiration |
Why is it called pectoralis minor?
The name of the pectoralis minor muscle describes the general location of this muscle. Pectoralis comes from the Latin word “pectus” meaning breast. Minor comes from Greek and means “the lesser”. This is the smaller of the two pectoralis muscles.