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Respiratory System

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Page 1: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Respiratory System

Page 2: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

CATS

• Respiratory system on cat: – Diaphragm– Visceral pleura– Trachea– Pharynx (Back of throat)– Larynx– Bronchus

Page 3: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Larynx (Esophagus behind)

Trachea

Lungs (visceral pleura is shiny surface)

Diaphragm

Page 4: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Trachea

Primary Bronchi

Secondary bronchi

Page 5: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

MODELS

• Upper Respiratory model: – External nares – Nasopharynx– Lingual frenulum (attachment under tongue)– Oropharynx – Uvula– Palatine tonsil (part of the immune system)– Laryngopharynx– Thyroid gland

Page 6: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Nasopharynx

Uvula

Oropharynx

Laryngopharynx

Page 7: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Page 8: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Page 9: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

• Trachea model: – Trachealis muscle– Arytenoid cartilage– Cricoid cartilage – Hyoid bone– Thyroid cartilage– Glottis (hole opening to the trachea)– Epiglottis (“leaf-like” flap that covers glottis)

Page 10: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Hyoid boneEpiglottis Thyroid cartilageGlottis

Arytenoid cartilageCricoid cartilage

Trachealis muscle

Thyroid gland

Page 11: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Hyoid boneEpiglottis Thyroid cartilage

Trachealis muscle

Thyroid gland

Cricoid cartilage

Page 12: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Hyoid boneEpiglottis Thyroid cartilageGlottisVocal cordArytenoid cartilageCricoid cartilage

Page 13: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Larynx

The ability to vary the pitch of the voice results from the tension in the vocal cords.

The epiglottis is a leaf-shaped flap that closes over the glottis during swallowing to keep food from entering the trachea.

Page 14: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Lung The right lung is larger than the left

one. More cigarette smoke gets in this side Cancer is more common in the right lung

Most foreign substances in the air do not reach the lungs because the ciliated epithelium and mucus that line the respiratory passages trap them and we cough it up.

Page 15: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Thyroid cartilageCricoid cartilage Thyroid glandTracheaLungVisceral pleura (shiny top layer)

Page 16: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

TracheaPrimary Bronchi Secondary Bronchi

Hilus (root)

Page 17: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Page 18: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

SAC Models

Hilus of lung

Page 19: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

SAC Models

Trachea

Primary bronchus

Secondary bronchus

Tertiary bronchus

Page 20: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Bronchiole

Alveoli

Page 21: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Diaphragm

When the diaphragm contracts: the thoracic cavity increases the pressure inside the thoracic cavity

drops The air flows into the lungs

Page 22: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

SLIDE: LUNG

• Trachea– Made of hyaline cartilage– Lined with pseudostratified columnar epithelium

• Bronchi (larger, has cartilage)

• Bronchiole

• Alveolus (Functional unit of the lung)

Page 23: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Lung

Bronchi

Bronchiole

Alveoli

Page 24: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Lung

Page 25: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Lung

Artery

Bronchiole

Alveoli

Page 26: Respiratory System. CATS Respiratory system on cat: –Diaphragm –Visceral pleura –Trachea –Pharynx (Back of throat) –Larynx –Bronchus

Lung

Esophagus

Trachea

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