Upper arm bone (humerus) Your deltoid muscles start near your clavicle and scapula. The end of the muscles, or insertion point, attaches near your humerus.

These muscles are attached to your arm bone with tendons that form a covering (cuff) over the ball of the humerus. Your rotator cuff helps you do things like get something off a high shelf and ...

This is where your upper arm bone, or humerus, ... A 2007 study found the triceps accounts for about 55 percent of the muscle mass in the arm while the biceps accounts for about 30 percent.

From your shoulders to your fingers, your arms have many moving parts: joints, bones, muscles, nerves, tendons and ligaments. Mysterious arm pain that seemingly comes out of nowhere can arise if ...

Your rotator cuff, which includes four muscles that connect your upper arm bone (your humerus) to your shoulder blade. These are the infraspinatus, supraspinatus, subscapularis, and teres minor.

This article answers the question 'what muscles do pushups work' and provides tips on form, mistakes, and variations. The push-up isn't just for the chest. ... or upper arm bone.

The scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone) rely heavily on the coordination of muscles like the rotator cuff, trapezius, serratus anterior and deltoids to ...

The scapula (shoulder blade), clavicle (collarbone) and humerus (upper arm bone) rely heavily on the coordination of muscles like the rotator cuff, trapezius, serratus anterior and deltoids to ...