Muscle origin and insertion study guide pdf

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muscle origin and insertion study guide pdf

Anatomy: Head and Neck Table of Muscles

Covers much of the anterior thoracic wall. Occasionally a gap is visible between the two parts. Its sternal origin presents a border which bounds, and determines the width of, the sternal furrow. The upper margin is generally well-marked medially and forms the medial boundary of a triangular depression, the infraclavicular fossa, which separates the pectoralis major from the deltoid; it gradually becomes less marked as it approaches the tendon of insertion and is closely blended with the deltoid. The lower border of pectoralis major forms the rounded anterior axillary fold. Lies underneath pectoralis major When the arm is raised, the lowest slip of origin of pectoralis minor produces a fullness just below the anterior axillary fold and serves to break the sharp outline of the lower border of pectoralis major. The anterior border presents as a slight ridge running downward and forward from the superior nuchal line of the occipital bone to the junction of the intermediate and lateral thirds of the clavicle.
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Flexor digitorum profundus muscle - Origin, Insertion, Innervation & Function - Anatomy - Kenhub

Muscles of Facial Expression

By the end of this section, you will be able to identify the following muscles and give their origins, insertions, actions and innervations:. The skeletal muscles are divided into axial muscles of the trunk and head and appendicular muscles of the arms and legs categories. This system reflects the bones of the skeleton system, which are also arranged in this manner. Some of the axial muscles may seem to blur the boundaries because they cross over to the appendicular skeleton. The first grouping of the axial muscles you will review includes the muscles of the head and neck, then you will review the muscles of the vertebral column, and finally you will review the oblique and rectus muscles. The muscles of facial expression originate from the surface of the skull or the fascia connective tissue of the face.

The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint , while the distal part of the femur articulates with the tibia and kneecap forming the knee joint. By most measures the femur is the strongest bone in the body.
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The skeletal muscles are divided into axial muscles of the trunk and head and appendicular muscles of the arms and legs categories. This system reflects the bones of the skeleton system, which are also arranged in this manner. The axial muscles are grouped based on location, function, or both. Some of the axial muscles may seem to blur the boundaries because they cross over to the appendicular skeleton. The first grouping of the axial muscles you will review includes the muscles of the head and neck, then you will review the muscles of the vertebral column, and finally you will review the oblique and rectus muscles.

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