Muscle origin and insertion study guide pdf

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muscle origin and insertion study guide pdf

Axial Muscles of the Head, Neck, and Back – Anatomy and Physiology

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 insertions of these muscles have fibers intertwined with connective tissue and the dermis of the skin.
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How to Remember the Muscles for Your Anatomy Exam

Covers much of the anterior thoracic wall.

MCEM Part A Study Guide/Anatomy/Upper Limb

Then the tendon attaches to the underside of the eyeball, thus explaining its action. Facial N. The mouth will droop if this muscle is malfunctioning; Opposes depressor anguli oris. Helps raise the thyroid cartilage i. Trigeminal N.

The former two groups, superficial and intermediate, are referred to as the extrinsic back muscles. The latter group is the intrinsic muscle group. This article will focus on the superficial group. The superficial back muscles are covered by skin, subcutaneous connective tissue and a layer of fat. The muscles of this group include:. The trapezius is a primary mover of the scapula that assists in superior and inferior rotation, retraction, and elevation and depression of the scapula and shoulder complex.

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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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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    Muscle Origins and Insertions | Thumb | Foot

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