Download - Muscle of the Thorax and Abdomen. Determine the anatomical movements indicated in the diagrams
Transcript
- Slide 1
- Muscle of the Thorax and Abdomen
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- Determine the anatomical movements indicated in the diagrams
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- Pectoantebrachialis (not in humans) Pectoralis major Pectoralis minor Xiphihumeralis (not in humans)
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- NO HUMAN HOMOLOG Origin: manubrium (sternum) Insertion: fascia of forelimb near elbow Action: rotates forelimb and draws limb toward chest (adduction)
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- Origin: Clavicle, sternum, ribs 1-6 Insertion: Greater tubercle of humerus Action: rotate forelimb and draw toward chest (adduction)
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- Origin: Sternum (xiphoid process) Insertion: Proximal half of humerus Action: Rotate forelimb and draw toward chest (adduction)
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- NO HUMAN HOMOLOG Origin: Sternum (xiphoid process) Insertion: By narrow tendon near proximal end of humerus Action: Rotate forelimb and draw towards chest (adduction)
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- Lattisimus dorsi External obliques Rectus abdominus
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- Largest muscle of the back Origin: Last 6 thoracic vertebrae, all lumbar vertebrae and iliac crest Insertion: Intertubercular groove (humerus) Action: Pulls forelimb dorsocaudally
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- Largest muscle of the back Origin: Last 6 thoracic vertebrae, all lumbar vertebrae and iliac crest Insertion: Intertubercular groove (humerus) Action: Pulls forelimb dorsocaudally
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- Paired superficial muscles that make up the lateral walls of the abdomen Origin: Lower ribs Insertion: Iliac crest Action: Trunk movement flexion, ab compression, lateral rotation
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- Paired muscles deep to the external obliques Origin: Iliac crest Insertion: Last three ribs Action: Same as external obliques
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- Most superficial muscles of the abdomen; largest muscle of the abdomen Origin: pubis Insertion: Xiphoid process, Rib cage Action: Flex the vertebral column
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- Biology corner Human Muscles Pectoantebrachialis Pectoralis major Pectoralis minor Xiphihumeralis Lattisimus dorsi External obliques Rectus abdominus
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- Biology corner Human Muscles Teres Major Pectoralis Major Latissimus dorsi Serratus anterior External obliques Rectus abdominus
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- Muscle of the shoulder and upper forelimb
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- Trapezius in humans Region: shoulder Action: pulls clavicle forward and upward, draws the scapula dorsally; allows forward extension of the humerus Antagonists: rotator cuff, latissimus dorsi, pectoralis major, subscapularis Origin: Insertion:
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- Deltoid in Humans Location: Shoulder Action: forward extension of the humerus, flexes the elbos Antagonists: rotator cuff, latissimus dorsi, pectoralis major, subscapularis Origin: Insertion:
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- Action: Origin: Insertion:
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- Muscle of the Shoulder and Forelimb: VENTRAL
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Longus/brevis Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Communis/lateralis Action: Origin: Insertion:
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- Muscle of the Shoulder and Forelimb: DORSAL
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Muscle of the Head and Neck
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Action: Origin: Insertion:
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- Sternomastoid/cleidomastoid Action: Origin: Insertion: