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THORACIC ANATOMY

helen.garner@jcu.edu.au

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Organisation

Skeletalprotection

Muscularmovement

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Organisation

3 internalcompartments

Centralmediastinum (+

heart) Left pleuralcavity (+ lung)

Right pleuralcavity (+ lung)

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Function

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Skeletal Basis

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Vertebrae

The typical vertebral structure

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Vertebrae

The 12 thoracic vertebrae exhibitfeatures that relate to the structure of thethoracic cage.

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Ribs:Typical Structure

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Ribs:Typical Articulations

7

T6

T7

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Ribs:Atypical Structure

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Sternum

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Articulations

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Articulations

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Diaphragmmovementchangesthoracicvolume

Creates basisforinspiration /expiration

Internal Orientation

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Relationship to other Regions:Neck

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Relationship to other Regions:Abdomen

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Muscles

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Muscles

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Movements:Pump Handle

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Movements:Bucket Handle

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Accessory Muscles:Inspiration

Diaphragm (primary) Scalene muscles Sternocleidomastoid External Intercostals

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Accessory Muscles:Expiration

Abdominalwall muscles

Internalintercostals

Passive recoilof lungs

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Segmental Supply

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Segmental Supply

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Thoracic Nerves/ Intercostal nerves

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ANS Integration

Cervical Sympathetic Ganglia

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Summary

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GLS MS225/246 (Med 1). Week 1

Thursday 8-11 am. Must wear ENCLOSED shoes, & bring lab coats. Monitored sign-in session. My philosophy your study / your priorities Questions guide you - they do not have hidden

messages!

Be Warned:............