The lateral head originates from the proximal
posterior humerus, with the medial head arising more distally but having a broader attachment on the lower two - thirds of the arm.
Not exact matches
However, the most of basal bones located in the anterior side (i.e. the thumb side in the human limb) were lost in early tetrapods, and only the most
posterior bone remained as the «
humerus (i.e. the upper arm of humans).»
The
posterior head, which starts on the back of the scapula (shoulder blade) and attaches on the
humerus.
-- The
posterior head starts on the back of the scapula (shoulder blade) and attaches on the
humerus.
A
posterior shoulder dislocation occurs when the head of the
humerus moves backwards out of the socket.
The medial head starts on the
posterior part of the
humerus also.
Focus on the mid and lower fibers of trapezius, serratus anterior,
posterior deltoid and infraspinatus to help retract and upwardly rotate the scapula and externally rotate the
humerus.
The infraspinatus arises from the
posterior medial surface of the scapula below the spine of the scapula, and it inserts into the greater tuberosity of the
humerus and the shoulder joint capsule.
The medial head originates lower on the
humerus on the medial and
posterior aspect and lies deeper to the long and lateral heads (Madsen et al. 2006).
The heads of the triceps muscle have origins on the medial and lateral
posterior aspects of the
humerus, and the lateral aspect of the scapula in the case of the long head.
The three heads of the triceps display slightly different origins before converging to a common tendon on the
posterior aspects of the
humerus.
The lateral head originates on the lateral and
posterior aspect of the
humerus and converges with the long head to blend into one common tendon.