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Respiratory System
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- 1Respiratory systemGaseous Exchange
Dependent on the cardiovascular system - 2Respiratory StructureNasal cavity
Nostril
oral cavity
Pharynx
larynx
Trachea
Carina of trachea
Right main bronchus
right lung (3 lobes)
Left main bronchus
Left lung (2 lobes)
Diaphragm - 3Nasal Cavity FunctionsNasal Vestible- Coarse hairs for filtering
Conchae (folds) - increase the area and are lined with mucous membranes, for moistening, warming and spiralling of air
Citliated epithelium - trap dust and carry mucus back to throat
Olfactory epithelium - smell - 4SinusesFrontal sinus
Sphenoid sinus
Air filled cavities
- produce mucus
- lighten the skull
- resonate sound - 5The pharynx (throat)Nasopharynx - cotains pharyngeal tonsil. Pseudostratified ciitated epithelium
oropharynx - contains palatine and lingual tonsils.
Laryngopharynx - connects oesophagus with larynx - 6Larynx (voice box)Connect pharynx to trachea
Mostly hyaline cartilage
Adams apple = thyroid cartilage
epiglottis - closes off the entrace to the airways during swallowing
Glottis - contains the vocal cords (sound is made when they vibrate) - 7Trachea (windpipe)Anterior to the esophagus
'C' shaped cartilage holds the trachea open
Trachealis muscle contracts to force things out of the trachea (coughing)
Cillitated to push dust particle etc back up into the throat mucous. - 8LungsFound in thoracic cavity
Flank the mediastinum
Right - 3 lobes
left - 2 lobes to allow for the position of the heart - 9Lungs - the pleuralungs are covered by:
Visceral pleura - inner
Paretial pleura - outer
Pleural cavity - fluid filled to reduce friction when breathing - 10Bronchi and bronchiolesConducting tubes - moving air into the lungs
Contains 23 branches - 11Bronchopulmonary segmentsEach lobe is divided into a number of bronchopulmonary segments
Each segment is served by a tertiary bronchus, and has its own blood supply - 12CarinaSensitive mucous membrane which when stimulated triggers the couch reflex
- 13Bronchidivide into smaller and smaller bronchi until they become bronchioles
- 14BronchiolesNo cartilage, just smooth muscle that can regulate the flow of air to the alveoli
- 15Terminal bronchiolesThe end of the bronchiole tubes...entering the respiratory zone, where it reacts with the bloom stream
- 16Respiratory zoneGas exchange takes place between the alveolar and the capillary walls
These two form the respiratory membrane - 17Respiratory membraneSurfactant - helps prevent the collapsing of alveoli
Macrophages - engulfs dust particles and microbes to ensure no unwanted matter gets exchanged - 18Overview- Conducting zoneconsists of: nose, pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles
function: Warms, filters, moistens air which is carried to and from the respiratory portion - 19Overview: Respiratory zoneConsists of: Respiratory bronchioles, alveolar ducts, alveolar sacs and the alveoli
Function: where gas exchange occurs - 20respiratory terminology
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- Human Bioscience Fichas sobre Respiratory System, creado por Kate Harper el 23/04/2018.
- Creado por
- Kate Harper
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