What are the origin, insertion, and function of the Triceps brachii muscle? What is the function of Pectoralis major muscle? Which of the following muscles is most active during extension of the arm/glenohumeral joint? (a) Biceps brachii (b) Latissimus dorsi (c) Pectoralis major (d) Subscap...
What is the function of the pectoralis major and pectoralis minor? What is the evolutionary purpose of the uvula? Describe the structure and function of the thorax. What is the purpose of the articular vertebrae? What is the purpose of the periosteum?
Define the muscle action/interaction: Antagonist? The pectoralis major has what action? What action does the gluteus maximus allow the body to do? What initiates an action potential on a muscle cell? What is the action of the masseter?
A pectoralis major tear happens when you injure your pec tendon or chest muscle. This type of injury is rare, and it typically happens to athletes or weightlifters.
The pectoral fascia is a thin layer of tissue that covers the pectoralis major and minor muscles. The purpose of the pectoral...
Rupture of the pectoralis major muscle typically occurs in the young, active male. Acute management of these injuries is recommended; however, what if the patient presents with a chronic tear of the pectoralis major? Physical exams and magnetic resonance imaging can help iden...
The pushup is a basic movement that primarily works the pectoralis major of the chest, which is a two-headed muscle group comprised of an upper and lower head. The pushup also works several other muscles, all of which act as assisting movers during the movement. These muscles are the ante...
Partial hypopharyngeal defects are most commonly reconstructed with the pectoralis major myocutaneous flap (PMMF) or free fasciocutaneous (FFC) flap. The purpose of this study is to determine the ideal method for reconstruction of partial hypopharyngeal defects by reviewing our institutional experience ...
The primary function of this muscle is the movement of the upper extremities in collaboration with the teres major and pectoralis major. These muscles work together to adduct, rotate, and extend the arm at the glenohumeral joint. While the lats are active in moving the upp...
These muscles lie on the front of the chest. The pectoralis major is much larger. It originates at the clavicle (collar bone), the sternum (breast bone), and ribs. It attaches to the humerus, the large bone in your arm. This muscle helps in several movements of the shoulder. The ...