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Stack #175710

Respiratory System Terminology

Vibrissae Vibrissae is one of the stiff, coarse hairs that are located at the entrance of the nostrils or on other parts of the face in many mammals and that often serve as tactile organs. They trap particulate matter.
Deglutition the act or process of swallowing, particular the swallowing of food
Trachealis a smooth muscle/function is to constrict the windpipe, allowing for higher velocity of air in the windpipe during coughing.
Mucciliary Escalator covers most of the bronchi, bronchioles and nose/ function is to move mucus up and out of the lungs.
Adventitia the outermost connect tissue covering of any organ or structure
Carina a ridge of cartilage/ the point where trachea divides into the right & left bronchus
primary Pulmonary Lobule a unit of pulmonary tissue that includes a bronchiole, alveolar ducts, sacs, and alveoli.
Terminal Bronchioles finest conducting branches/delivers air to a single pulmonary lobule
Respiratory Bronchioles Smallest bronchiole (0.5 mm in diameter) that connects the terminal bronchiole to the alveolar duct.
Alveolar ducts the tiny end ducts of the branching airways that fill the lungs. Each lung holds approximately 1.5 to 2 million of them.
Respiratory Membrane located in the lungs and it is where gas exchange occurs with blood
Type I (Squamous Alveolar Cells) cover about 95% of the alveolar surface, they are unable to divide, and they form a thin, blood-gas barrier through which gas exchange occurs.
Type II (Great Alveolar Cells) interrupt the continuous simple squamous lining and secretes a surfactant which is a mixture of phospholipid & proteins
Respiratory Cycle includes One inspiration plus the following expiration
Valsalva Manuever forced expiratory effort against a closed glottis
Hyperventilation the condition of breathing rapidly and deeply which decreases the amount of CO2 in the blood.
Nasal fossa Right & Left chambers of the nasal cavity
Nasal Concha Consists of mucus membranes supported by thin scroll-like turbinate bones
Pharynx A muscular funnel extending about 13cm/5 in from the chonae to the larynx. Has 3 regions: nasopharynx, oropharynx, aryngopharynx
Larynx voice-box; cartilaginous chamber about 4 cm long. Its’ primary function is to: to keep food and drink out of the airway. It has a superior opening called a: glottis which is guarded by a flap of tissue called the: epiglottis.
Trachea “windpipe”; a rigid tube about 12cm long and 2.5 cm in diameter, lying anterior to the esophagus. It is supported by: 16-20 c-shaped rings of hyaline cartilage.
Bronchiole Continuations of the airway that are 1mm or less in diameter and lacks cartilage.
Alveolus A pouch about (0.2 to 0.5) mm in diameter. Walls consist primarily of squamous type I Alveolar cells.
Pulmonary Surfacant A detergent-like lipoprotein secreted by: great (type II) alveolar cells which forms a thin film on the insides of the alveoli and the bronchioles.
Pleural Cavity The space between the parietal and visceral pleurae
Tidal Volume The amount of air inhaled or exhaled in one respiratory cycle.
Created by: rpanchol