Hand Muscles

Inside the hand there are nineteen muscles. Seven form the two fleshy regions visible in the palm of the hand at the base of the I and V finger, called respectively thenar eminence and hypothenar eminence. They are divided in three regions: In the intermetacarpal...

Anterior – Anterolateral Abdominal Wall Muscles

The anterolateral abdominal wall consists of four main layers (external to internal): skin, superficial fascia, muscles and associated fascia, and parietal peritoneum. The muscles of the anterolateral abdominal wall can be divided into two main groups: Flat Muscles...

Posterior Abdominal Wall Muscles

The muscles that compose the posterior abdominal wall are powerful stabilizers of the lumbar spine and their disfunction is often involved in spine problems (together with anterior muscles). They are: Psoas Major: due to the common insertion with the Iliacus, it is...

Muscles of the Shoulder

Shoulder muscles are divided in 2 main groups: Shoulder girdle: this group includes the Deltoid, the Supraspinatus, the Infraspinatus, the Teres Major, the Teres Minor and the Subscapularis. Muscles connecting the shoulder with the thorax: this group is formed by the...

Muscles of the Arm

The muscles of the arm are divided in two regions, anterior or flexor and posterior or extensor, separated from each other by the septa of the brachial fascia. The brachial fascia, which at the top continues with the axillary fascia and with the fascia covering the...