Chapter 2 Anatomy of Respiration Perry C Hanavan
- Slides: 38
Chapter 2 Anatomy of Respiration Perry C. Hanavan, Au. D
Vertebral Column • • Vertebrae (video) Vertebral column Vertebrae Cervical – Atlas and Axis • Thoracic – 12 pair of ribs articulate • Lumbar • Sacral • Coccyx
Vertebra
Question Which of the following best describes curvature of the spine away from the midline or sideways? A. Kyphosis B. Lordosis C. Scoliosis D. None of the above
Vertebral Disorders Kyphosis Lordosis Scoliosis
Vertebral Disorders
Disc Problems
Vertebral Disorders
Question How many ribs do humans normally have? A. 12 B. 24 C. 16 D. Varies from human to human E. Adam is missing one
Ribs • Bony thorax (anterior view) • Bony thorax (posterior view) • 12 pair of ribs: – True Ribs – ribs 1 -7; these are attached directly to the sternum through their own costal cartilages. – False Ribs – ribs 8 -10; their costal cartilages are joined to the rib just above them so their attachment to the sternum is indirect – Floating Ribs – ribs 11 -12; these ribs attach to vertebrae, but not to the sternum so they float on one end
Rib Cage During Respiration • • Dr. Michael Parker Demo 2 Dr. Michael Parker Demo 3 Rib
Question Term that means breastbone? A. Corpus B. Xiphoid C. Sternum D. Clavicle
Sternum • Sternum (breastbone) – Manubrium - handle – Corpus - body – Xiphoid - sword • Rib and clavicular articulations
Scapula • Scapula – shoulder blade
Clavicle • Clavicle – collar bone
Pelvis • Pelvic girdle - basin
Question If a person where to aspirate an object, it is most likely to fall into this lung: A. Right B. Left C. Depends on age of person D. Equal odds falling into either
Lungs • Lungs – 2 lungs • Right – 3 lobes • Left – 2 lobes – Mediastinum • Cardiac notch
Question Two terms mean windpipe…one Latin and the other Greek (select 2 answers) A. Trachea B. Bronchi C. Alveoloi D. Larynx E. Pharynx
Lungs
Bronchial Passageway • • • Trachea Bronchi Secondary bronchi Tertiary bronchi Alveoli
Trachea and Bronchi • Trachea – • Bronchi – • Alveoli -O 2 and Co 2 are exchanged at the alveoli. There about 300 million alveoli which are encapsulated in capillaries. The surface of the alveolus is composed of a thin layer of squamous epithelial cells with cuboidal cellsinterspersed among them.
Pleural Linings • Thoracic linings – parietal pleurae • Mediastinal pleura • Pericardial • Diaphragmatic • Costal • Apical • Visceral
Muscles of Inspiration • • • • Diaphragm External intercostal Internal intercostal Levator costarum Serratus posterior superior Sternocleidomastoid Scalenus Trapezius Pectoralis major Pectoralis minor Serratus anterior Subclavius Levator scapulae Rhomboideus major Rhomboideus minor
Diaphragm • Dome shaped muscle innervated by two phrenic nerves. • When diaphragm contracts during normal breathing, the dome descends l-2 cm and as much as l 0 cm during deep inspiration.
Intercostals
Intercostals
Neck Muscles
Neck Inspiratory Muscles
Anterior • Pectoralis • Serratus anterior • Subclavius
Anterior Inspiratory Muscles
Posterior Muscles • Levatores costarum • Serratus posterior superior • Levator scapulae • Rhomboideus • Latissimus dorsi
Posterior Inspiratory Muscles
Posterior Muscles of Inspiration
Muscles of Expiration • • • Internal intercostal Transversus thoracis Subcostal Serratus posterior inferior Innermost intercostal Latissimus dorsi Internal oblique abdominis External oblique abdominis Rectus abdominis Quadratus lumborum
Anterior Expiratory Muscles
Anterior Expiratory Muscles
End Chapter 2 Study
- External respiration vs internal respiration
- External respiration vs internal respiration
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