The triceps originates on the scapula and proximal humerus and inserts on the olecranon process. The muscles has three heads (hence its name) so it has multiple origins.
The subscapularis muscle originates on the anterior surface of the scapula and inserts on the proximal anterior humerus. Its function is to rotate the head of the humerus medially.
olecranon fossa
The rotator cuff muscles are referred to occasionally as the SITS muscles. The Supraspinatus, Infraspinatus, Teres minor and the subscapularis. The Supras. originates on the scapula and inserts on the humerus. The Infras. originates on the scapula and inserts on the humerus(greater tubercle. The Teres minor originates on the scapula and inserts on the humerus. The Subscapularis originates on the scapula and inserts on the humerus(lesser tubercle). The function of this muscle group is to stabilize the shoulder joint. Hope this helps.
The biceps brachii muscle.
Triceps Brachii - it is the only muscle fleshing out the posterior humerus; its three heads arise from the shoulder girdle and proximal humerus, and it inserts into the olecranon process of the ulna. It is a powerful prime mover of elbow extension.triceps brachii
The semimebranosus is part of the hamstring group and originates at the ischial tuberosity and inserts into the proximal tibia.
The brachialis muscle originates on the distal anterior humerus and insert at the coronoid process. The function of the brachialis is flexion at the elbow.
Latissimus dorsi
Latissimus dorsi
rectus femoris
You have the pectoralis major muscle in the chest wall. It arise from the sternum and the clavicle. It is inserted on the lateral part of the bicipital groove.
It inserts onto the humerus. It originates from the coracoid process of the scapula. There are 2 parts - Long head and short head. The long head is connected to the coracoid process by a tendon that comes up between the tubercules of the humerous. The short head is connected directly to the humerus.