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Body Movements. Muscles and Body Movements Movement results when a muscle moves an attached bone Movement results when a muscle moves an attached bone.

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Presentation on theme: "Body Movements. Muscles and Body Movements Movement results when a muscle moves an attached bone Movement results when a muscle moves an attached bone."— Presentation transcript:

1 Body Movements

2

3 Muscles and Body Movements Movement results when a muscle moves an attached bone Movement results when a muscle moves an attached bone Muscles are attached to at least two points Muscles are attached to at least two points Origin Origin Attachment to a immoveable bone Attachment to a immoveable bone Insertion Insertion Attachment to an movable bone Attachment to an movable bone

4 Muscles and Body Movements

5 Types of Ordinary Body Movements Flexion Flexion Decreases the angle of the joint Decreases the angle of the joint Brings two bones closer together Brings two bones closer together Typical of hinge joints like knee and elbow Typical of hinge joints like knee and elbow Extension Extension Opposite of flexion Opposite of flexion Increases angle between two bones Increases angle between two bones

6 Types of Ordinary Body Movements

7 Hyperextension: results when angle is > 180 ̊

8 Types of Ordinary Body Movements Rotation Rotation Movement of a bone around its longitudinal axis Movement of a bone around its longitudinal axis Common in ball-and- socket joints Common in ball-and- socket joints Example is when you move atlas around the axis vertebra (shake your head no) Example is when you move atlas around the axis vertebra (shake your head no)

9 Types of Ordinary Body Movements Abduction Abduction Movement of a limb away from the midline Movement of a limb away from the midline Adduction Adduction Opposite of abduction Opposite of abduction Movement of a limb toward the midline Movement of a limb toward the midline

10 Types of Ordinary Body Movements Circumduction Circumduction Combination of flexion, extension, abduction, and adduction Combination of flexion, extension, abduction, and adduction Common in ball-and- socket joints Common in ball-and- socket joints

11 Special Movements Dorsiflexion Dorsiflexion Lifting the foot so that the superior surface approaches the shin Lifting the foot so that the superior surface approaches the shin Plantar flexion Plantar flexion Depressing the foot (pointing the toes) Depressing the foot (pointing the toes)

12 Special Movements Inversion Inversion Turn sole of foot medially Turn sole of foot medially Eversion Eversion Turn sole of foot laterally Turn sole of foot laterally

13 Special Movements Supination Supination Forearm rotates laterally so palm faces up (anterior) Forearm rotates laterally so palm faces up (anterior) Pronation Pronation Forearm rotates medially so palm faces down (posterior) Forearm rotates medially so palm faces down (posterior)

14 Special Movements Opposition Opposition Move thumb to touch the tips of other fingers on the same hand Move thumb to touch the tips of other fingers on the same hand


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