8. The Respiratory System Flashcards
Has been designed to take oxygen into the body, and get rid of carbon dioxide and some other waste products of bodily activity
Respiratory System
2 chambers of the nose
Nasal cavities
lies posterior to the nasal cavities, mouth, and larynx
The Pharynx or throat
projects posteriorly from the hard palate
Soft palate
canal between the nasal pharynx and middle ear, opens into the lateral side of the nasal pharynx
Auditory tube
are located on the posterior wall of the nasal pharynx
Adenoids
is a flat leaflike plate of cartilage
Epiglottis
masses of lymphoid tissue
Tonsils
organ of voice or voice box
Larynx
is a triangular boxlike structure that lies in the anterior part of the neck
Larynx
compose of 2 flat plates of cartilage placed vertically and joined together at the midline anteriorly
Thyroid cartilage
is shaped like a signet ring. It encircles the larynx below the thyroid cartilage
Cricoid cartilage
are paired folds of the lining membrane of the larynx that extend medially from each sidewall of the larynx towards the midline
Vocal folds
is the slitlike opening between the vocal folds
Glottis
is a hollow tube 11 cm or about 4.5 inches in length extending from the larynx above to bronchi below. Consists of 16 to 20 incomplete ring
Trachea or windpipe
are hollow branched tubes continuous above with the trachea
Bronchi
is a ridge of cartilage between the openings from the trachea into right and left main bronchi.
Carina
Bifurcation of the trachea
Carina
are formed by the division of the smallest bronchi
Bronchioles
smallest bronchioles that leads into the air sacs of the lungs
Respiratory bronchioles
soft tissue study
Pharyngography
The lungs are divided into
lobes – segments – alveolar sacs – alveoli
the upper bluntly pointed end, and reaches one inch above the clavicle
Apex
the broad lower end is concave and rests upon the upper convex surface of the diaphragm
Base
is a depression or indention on the medial surface of each lung where the structures enter or leave the lung
Hilum
consists of structures entering or leaving the lungs at the hila, the blood vessels and the main bronchi
Roots
of the lung is that surface that lies adjacent to the ribs and cartilages
Costal surface
surface of the lungs that is the part in contact with the diaphragm
Diaphragmatic surface
surface of the lungs in contact with the mediastinum
Mediastinal surface
are narrow grooves or slits that divide the lung into lobes
Fissures
can be traced around the chest wall from the 5th thoracic vertebrae behind, obliquely downwards, and forward to the anterior end of the 6th rib
Oblique fissures
begins at the axillary border of the right lung
Horizontal fissure
are the structural units of the lungs, each with its segmental bronchus, segmental artery and vein
Pulmonary segments
a cup-shaped microscopic structures that with many other similar structures form the wall of an alveolar or air sac
Alveolus
a small tub or cavity
alveolus
Functional unit of the lung
alveolus
is the expanded saclike cavity opening from a small division (alveolar duct) of a respiratory bronchiole
Alveolar sac or air sac