Chapter 22 Flashcards
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Oxygen and carbon dioxide exchange between blood and air
Speech and other vocalizations
Smell
Controls the pH of body fluids
Helps synthesize angiotensin II
Thoracic pump promotes the flow of Lymph and venous blood
Valsalva maneuver – breath holding to expel abdominal and pelvic contents
Functions of the respiratory system
Ventilation of lungs (breathing)
Use of oxygen in cellular metabolism
Respiration
It warms, Cleanses, and humidifies inhaled air; amplifies the voice; detects odors.
Functions of the nose
Main Parts of the nose
Nostrils
Posterior nasal apertures (choanae)
Nasal cavity
A pair of anterior openings
Nostrils
A pair of posterior openings
Posterior nasal aperture’s (choanae)
Space that is divided in half by the nasal septum, internal chambers of nose
Nasal cavity
There are six parts that make up the nasal cavity what are they?
Nasal septum Palate Conchae Meatuses Olfactory Mucosa Respiratory mucosa
This is made up of bone and cartilage dividing nasal cavity into left and right, what is it?
Nasal septum
Separates nasal cavity from the oral cavity, what is it?
Palate
These are folds of tissue the project from the lateral walls, what are they called?
Conchae
Narrow air passages beneath each Conchae, What are they called?
Meatuses
Sensory cells that detect odors
Olfactory mucosa
This is made up of Ciliated epithelium and goblet cells, this is called?
Respiratory mucosa
Paranasal sinuses and __________ ___________ drain into the nasal cavity.
Lacrimal ducts
This has stiff guard hairs that block insects and debris from entering, what is it?
The vestibule
Muscular funnel which passes air, food and drinks through is called what?
The pharynx
There are three parts of the pharynx what are they?
Nasopharynx
Oropharynx
Laryngo-pharynx
Posterior to choanae to the soft palate is called what?
Nasopharynx
Soft palate to the epiglottis is called what?
Oropharynx
Epiglottis to the cricoid cartilage is called what?
Laryngo-pharynx
This keeps food and drink out of airway in produces sound what is it?
Larynx (voice box)
There are four structures that make up The larynx, what are they?
Epiglottis
Vestibular folds
Cartilages
Glottis
This closes the airway and directs food and drink into the esophagus, it is called?
The epiglottis
These keep food and drink out of the airway, they are called?
Vestibular folds
Epiglottis, thyroid, cricoid, arytenoid, corniculate, and cuneiform cartilages are all?
Cartilages of the larynx
Vocal cords and the opening between them are called?
Glottis
What produces Sound when Air passes between them?
Vocal cords
What is the rigid tube that directs air to the lungs?
Trachea (windpipe)
Supported by 16 to 20 C shaped Cartilaginous rings that reinforce the trachea and keep it from collapsing when you inhale
Trachea
Smooth muscle that contracts or relaxes to adjust airflow is called?
Trachealis
Mucus traps particles and cilia drives mucus toward the pharynx
Mucociliary escalator
Lower most tracheal cartilage that directs the airflow to the lungs?
Carina
The base of this organ rests on the diaphragm, what is it?
The lung
The apex of this organ projects above the clavicle, It is?
The lungs
The broad surface of the lung pressed against the rib cage?
Coastal surface
Surface of the lung that faces medially?
Mediastinal surface
The slit through which bronchus, blood vessels, LV and nerves pass
Hilum
Indentation where the heart presses against the lung?
Cardiac impression (notch)
This organ is divided into lobes
The lungs
What is the branched system of air tubes arising from the fork in the trachea?
Bronchial tree conduction division
the main bronchi - the lobar bronchi-Segmental bronchi -Bronchioles - Terminal bronchioles
The branches of the bronchial tree
These have elastic connective tissue, smooth muscle and cartilage what are they?
Bronchi
Structures with alveoli?
Respiratory division
Respiratory bronchioles - Alveolar ducts - Alveolar sacs - Alveoli
Branches of the respiratory division
Little sac that provides surface for gas exchange?
Alveolus
Allows for rapid gas diffusion between air and blood?
Squamous alveolar cells
Repairs alveolar epithelium and secretes pulmonary surfactant which prevents alveoli from collapsing when one exhales?
Great alveolar cells
Keep alveoli free of debris?
Alveolar macrophages
Barrier between alveolar air and blood, consisting of alveolar cell, basement membrane, and endothelial cell?
Respiratory membrane
Serous membrane covering the surface of the lung?
Visceral Pleura
Serous membrane adhering to the inner surface of the rib cage and superior surface of the diaphragm?
Parietal pleura
Space between the pleura containing pleural fluid to stop friction of lungs?
Pleural cavity
These reduce friction, create a pressure gradient, and compartmentalize?
The pleurae and pleural fluid
A repetitive cycle of inspiration and expiration?
Pulmonary ventilation (breathing)
When the diaphragm contracts it does what?
Tenses and flattens
Next this enlarges the thoracic cavity and lungs and does what to the pressure producing an inflow of air?
Lowers the pressure
When the diaphragm relaxes, it does what?
It bulges upward again
How do the internal and external intercostal muscles aid the diaphragm?
By raising the rib cage
What do the scalene’s, pectoralis muscles, sternocleidomastoid and serratus anterior do to the ribs during forced inspiration?
They elevate the ribs