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Muscle Types & Movements

Muscle Types & Movements. Anatomy & Physiology Mrs. Halkuff. Cardiac Muscle Involuntary Striated Intercalated Discs Contract in rhythmic fashion. 3 Types of Muscle. Smooth Muscle Involuntary Nonstriated Lines hollow organs: arteries, digestive tract,

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Muscle Types & Movements

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  1. Muscle Types & Movements Anatomy & Physiology Mrs. Halkuff

  2. Cardiac Muscle • Involuntary • Striated • Intercalated Discs • Contract in rhythmic fashion 3 Types of Muscle

  3. Smooth Muscle • Involuntary • Nonstriated • Lines hollow organs: arteries, digestive tract, bladder, uterus, & lungs 3 Types of Muscle

  4. SkeletalMuscle • Voluntary • Striated • Connect to the bones to produce movement. • 640 muscles in the body. 3 Types of Muscle

  5. Movement is produced by the contraction of muscles. • All descriptions of position and movement assume anatomical position.

  6. Muscles have an Origin, Insertion, & Action. • Origin: Muscle attachment to an immovable bone. • Insertion: Muscle attachment to a moveable bone. • Movement is a muscle’s insertion moving toward or way from its origin. • Action: The movement that is produced from the muscle. Origin, Insertion, & Action

  7. ADJUSTING AN ANGLE BETWEEN TWO BODY PARTS • Flexion: Reduces the angle between two articulating elements. • Extension: Increases the angle between two articulating elements.

  8. ADJUSTING THE BODY IN RELATION TO THE MIDLINE OF THE BODY • Abduction: Movement away from the center/midline. • Adduction: Movement toward the midline of the body. Refers to the appendicular skeleton only.

  9. MOTIONS IN AN ARC • Rotation: Turning the body on an axis, such as shaking your head ‘no’. • Circumduction: Circular movements.

  10. ROTATION OF THE FOREARM • Pronation: Palm up to palm down. • Supination: Palm down to palm up

  11. MEDIAL & LATERAL FLEXION OF FOOT • Inversion: Movement of the foot inward, toward the median plane. • Eversion: Movement of the foot outward, away from the median plane.

  12. FLEXION OF ENTIRE FOOT • Dorsiflexion: Elevating the sole and digging the heel. • Plantar Flexion: Extending the ankle and elevating the heel. Pointing the toes.

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