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Nov 5, 2018 · The origin is the fixed point that doesn’t move during contraction, while the insertion does move. Your bones are the levers and your muscles are the pulley. Basically, we are all super complex puppets on strings. To explore this further, let’s take a look at the rhomboids. Rhomboids Minor and Major.
Nov 3, 2023 · Attachments, innervation and functions of the superficial muscles of the back. The latissimus dorsi muscle (AKA: 'the lats muscle' or 'the lats') is the widest muscle in the human body. It is relatively thin and covers almost all back muscles at the posterior trunk, except the trapezius . Along with the levator scapulae, trapezius and rhomboid ...
The closer something is to the point of origin, the more proximal it is. When comparing one attachment to another, the closest attachment to the center/origin is proximal, and the further attachment is distal. To learn more about this, Wikipedia has an excellent page on human anatomy, “Anatomical terms of location.
Origin is relatively the less movable end of the muscle/tendon that is attached to a bone. Insertion is the more flexible end of the muscle that is usually attached to a bone via tendons. It is the proximal end that is attached to the less movable bone. It is the distal end that is attached to the more movable bone. It has more muscle mass.
Jul 26, 2023 · Rectus abdominis , informally known as the abs muscle, is a long muscle of the anterior abdominal wall. In those with low body fat, it is clearly visible beneath the skin forming the ‘six pack’. It extends from the rib cage all the way to the pubic bone . Rectus abdominis belongs to the anterior abdominal muscles together with pyramidalis ...
Jul 3, 2019 · Anatomical Directional Terms . Anterior: In front of, front Posterior: After, behind, following, toward the rear Distal: Away from, farther from the origin Proximal: Near, closer to the origin Dorsal: Near the upper surface, toward the back Ventral: Toward the bottom, toward the belly Superior: Above, over Inferior: Below, under Lateral: Toward the side, away from the mid-line Medial: Toward ...
Nov 29, 2023 · Origin and insertion. The serratus anterior muscle originates at the 1st to 8/9th rib and inserts at the anterior surface of the medial border of the scapula (extending from the superior to inferior angles). The muscle is further divided into three parts: Intermediate part: 2nd to 3rd rib → medial border of the scapula.