Chapter 7: Respiratory System Flashcards
What are the 6 organs of the respiratory system?
Nasal cavity Pharynx Larynx Trachea Bronchial tubes Lungs
What other system does the respiratory system work with?
Cardivascular system
What are the 3 parts of the respiration system?
Ventilation
Inhalation
Exhalation
Ventilation
Flow of air between outside environment and lungs
Inhalation
Flow of air into lungs
Brings fresh oxygen into air sacs
Exhalation
Flow of air out of lungs
Removes carbon dioxide from body
External Respiration
Exchange of oxygen and carbon dioxide in lungs
What does oxygen do in the external respiratory?
Leaves air sacs and enters blood stream
What does carbon dioxide do in the external respiratory?
Leaves blood stream and enters air sacs
Internal Respiration
Oxygen and carbon dioxide exchange at cellular level
What does oxygen do in the internal respiration?
Leaves blood stream and is delivered to tissue
Used immediately for metabolism
What does carbon dioxide do in internal respiration?
Waste product of metabolism
Leaves tisue and enters blood stream
Nasal Cavity
Air enters through nares
What is the nasal cavity divided by?
Nasal Septum
Palate
Roof of mouth separates nasal cavity above from mouth below
Cilia
Small hairs line opening to nasal cavity
Filter out large dirt particles before they can enter lungs
What are the walls of the nasal cavity and nasal septum made of?
Cartilage
What covers the walls of the nasal cavity and nasal septum?
Mucous membrane
Mucus
Thick and sticky secretion of membrane that cleanses air by trapping dust and bacteria
What is the purpose of Capillaries in the mucous membrane?
Warms and humidifies air
Paranasal sinuses
Located within facial bones
Echo chamber for sound protection
Gives resonance to voice
Pharynx
Throat
Air enters trachea while food/liquid enters esophagus
What systems uses the pharynx?
Respiratory
Digestive
What are the 3 parts of the pharynx?
Nasopharynx
Oropharynx
Laryngopharynx
Nasopharynx
Upper section by nasal cavity
Oropharynx
Middle section by oral cavity
Laryngopharynx
Lower section by larynx
Tonsils
Lymphatic tissue that removes pathogens in air and food
What are the 3 pairs of tonsils?
Adenoids
Palatine
Lingual
Where is the auditory tube?
Nasopharynx
Auditory Tube
Tube opens with each swallow
Equalizes air pressure between middle ear and outside atmosphere
Larynx
Voice box
Muscular tube between pharynx and trachea that contains vocal cords
What are the walls of the larynx?
Composed of cartilage plates
Held in place by ligaments and muscles
What forms the adam’s apple?
Thyroid cartilage
Vocal Cords
Folds of membraneous tissue that vibrates to produce sounds as air passes through opening between folds
Epiglottis
Flap of cartilage that sits above glottis
Covers larynx and trachea during swallowing
Trachea
Windpipe
Carries air from larynx to main bronchi
What is the trachea composed of?
Smooth muscle
Cartilage rings
Lined with mucous membrane and cilia
Bronchial Tubes
Distal end of trachea divides into branches to form secondary and tertiary bronchi
Alveoli
Bronchiole terminates into
Bronchioles
Bronchi continue to branch to form into
Pulmonary capillaries
encases each alveolus
What forms the respiratory membrane?
Alveoli wall and the capillary wall
Respiratory membrane
External respiration takes place across respiratory membrane
Lungs
Total collection of bronchi, bronchioles, and aveoli
How many lobes does the right lung have?
3
How many lobes does the left lung have?
2
What are the 3 parts of the lung?
Apex
Base
Hilum
Apex
Pointed superior portion
Base
Broad lower area of lung
Hilum
Entry and exit point of lung
Bronchi, blood vessels, nerves