Exam 2 Review PDF
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This document is a review for Exam 2, focusing on muscle actions, muscle groupings, and locations, including the origins and insertions of major muscles. It also covers topics like facial expressions, anterior and posterior views of muscles, and the rotator cuff.
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Exam 2 Review I would focus on O, I, and the main action they do. Also look at their muscle groupings (elbow flexors/extensors, humerus flexors/extensors, wrist flexors/extensors, etc). Definitions Agonist Primarily responsible for producing movement Antagonist Action oppo...
Exam 2 Review I would focus on O, I, and the main action they do. Also look at their muscle groupings (elbow flexors/extensors, humerus flexors/extensors, wrist flexors/extensors, etc). Definitions Agonist Primarily responsible for producing movement Antagonist Action opposes that of a particular agonist Synergist May provide additional pull or stabilize origin Example: Agonist – biceps brachii is prime mover of elbow flexion, Antagonist – triceps brachii; agonist of elbow extension, Synergist – brachioradialis Definitions 1.Parallel – fascicles run parallel to the long axis of the muscle [e.g., biceps brachii] 2.Convergent – fascicles extending over a broad area (origin) converge on a common attachment site (insertion) [e.g., pectoralis major] 3.Pennate – feather; short fascicles that attach obliquely to a central tendon running the length of the muscle; form a common angle with the tendon [e.g., rectus femoris] 4.Circular (sphincter) – fascicles are concentrically arranged around an opening or a recess [e.g., orbicularis oris] Face/Head Frontalis Frontalis Occipitalis Sternocleidomastoid Facial Expressions Wrinkling forehead skin Frontalis Kissing Occipitalis Smiling (2) Grinning Pouting Blowing Anterior Arms Posterior Focus Topics Grouping by action o Flexion, extension, pronation/supination of the neck, shoulder, humerus, elbow, wrist, fingers o Be able to name 3-4 muscle Recall origin and insertion of BIG muscles What are the muscles of the rotator cuff?
