The scapula is the site of origin of a group of muscles that stabilize the shoulder joint. identify this muscle group. hints the scapula is the site of origin of a group of muscles that stabilize the shoulder joint. identify this muscle group. rotator cuff upper arm flexor upper arm extensor upper arm abductor

Rotator cuff

The rotator cuff is a group of muscles that perform a variety of tasks such as flexion, abduction, internal rotation and external rotation. The muscles in this group are essential to all movement of the shoulder, making them very essential for upper body mobility. Namely, the muscles of the rotator cuff are supraspinatus, infraspinatus, teres minor and subscapularis. 

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.