Respiratory Structures Flashcards
The muscular tube extending from the nasal cavity to the esophagus and larynx also called throat
Pharynx
Space within an posterior to external nose
Nasal cavity
The external openings leading into the nasal cavities
External nares
Part of the respiratory passageway located between the trachea and pharynx
, keeps airway open, prevents food from entering and producing sound.
Larynx
One of the two large respiratory tubes that branch from the trachea and enter a lung
Right/left primary bronchus
One of the paired respiratory system organs in which gas exchange occurs
Right/left lung
What are the serous membranes that surround each lung called?
Pleurae
Serous membrane which covers the external surface of each lung
Visceral pleura
Serous membrane which lines the thoracic wall and the mediastinum and covers the superior surface of the diaphragm
Parietal pleura
Region of the thoracic cavity between the lung
Mediastinum
The slit like space between the visceral and parietal pleurae
Pleural cavity
Serous lubricating fluid within the pleural cavity, secreted by the pleurae
Pleural fluid
What are the branching airways of a lung called?
Bronchial tree
One of the two large respiratory tubes that branches from the trachea and enters a lung
Primary bronchus
A respiratory tube that branches from a main bronchus and leads into one lung lobe
Secondary bronchus
A respiratory tube that branches from a secondary bronchus and leads into one bronchi pulmonary segment of the lung
Tertiary bronchus
Very small air passage without supporting cartilage
Bronchioles
The smallest final type of bronchioles in the conducting zone
Terminal bronchiole
The lung region containing alveoli where gas exchange occurs
Respiratory zone
Thin- walled air filled sacs in which gas exchange occurs
Alveoli
Clusters of alveoli that poem into a common space
Alveolar sac
What vessels carry blood that is low in oxygen from the heart to the lungs?
Pulmonary arteries
What blood vessels completely surround each alveolus
Capillaries
What gases are exchanged between the Air in the alveoli and the blood in the pulmonary capillaries
Oxygen and co2
What vessels transport oxygenated blood back to the heart?
Pulmonary veins
What is the strong attraction between water molecules at the surface of alveolar fluid called?
Surface tension
What does surfactant do to the surface tension of alveolar fluid?
Lowers it
What would an alveolus do if it were lined with pure water
Collapse
What makes up the respiratory membrane?
Alveolar wall and capillary wall
What do oxygen and carbon dioxide do across the respiratory membrane?
Diffuse
