Anatomy and Physiology by Rod R Seeley 6th edition chapter 10 power-point

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Anatomy and Physiology, Sixth Edition
Rod R. SeeleyIdaho State University Trent D.
StephensIdaho State University Philip
TatePhoenix College
Chapter 10 Lecture Outline
See PowerPoint Image Slides for all figures and
tables pre-inserted into PowerPoint without notes.
Copyright The McGraw-Hill Companies, Inc.
Permission required for reproduction or display.
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Muscular SystemGross Anatomy

• Chapter 10

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General Principles

• Tendons Attach muscles to bones
• Aponeurosis A very broad tendon
• Muscles
• Origin or head Muscle end attached to more
  stationary of two bones
• Insertion Muscle end attached to bone with
  greatest movement
• Belly Largest portion of the muscle between
  origin and insertion
• Synergists Muscles that work together to cause a
  movement
• Prime mover Plays major role in accomplishing
  movement
• Agonist Muscle causing an action when contracts
• Antagonist A muscle working in opposition to
  agonist
• Fixators Stabilize joint/s crossed by the prime
  mover

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Muscle Shapes
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Muscle Shapes
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Nomenclature

• Muscles are named according to
• Location pectoralis gluteus, brachial
• Size maximus, minimus, longus, brevis
• Shape deltoid, quadratus, teres
• Orientation rectus
• Origin and insertion sternocleidomastoid,
  brachioradialis
• Number of heads biceps, triceps
• Function abductor, adductor, masseter

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Muscle Movements

• Muscle contractions are a pull or force by
  relative positions of
• Lever Rigid shaft or bone
• Fulcrum Pivot point or joint
• Weight or resistance

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Classes of Levers

• Class I
• Fulcrum between force and weight
• Seesaw or head movement
• Class II
• Weight is between fulcrum and pull
• Wheelbarrow, standing on toes
• Class III
• Pull located between fulcrum and weight
• Person using a shovel
• Most common

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Muscle Anatomy Anterior View
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Muscle Anatomy Posterior View
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Muscles of the Neck
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Muscles of Facial Expression
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Muscles of Mastication
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Muscles of Respiration
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Muscles of the Abdominal Wall
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Muscles of Pelvic Floor and Perineum
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Muscles of the Arm
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Muscles of the Forearm
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Muscles of the Thigh
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Muscles of the Leg
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Muscles of the Leg
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Muscles of the Foot