RESPIRATORY SYSTEM Flashcards
System that consists of all the organs responsible for the process of breathing. It has 2 important function
a. bring oxygen (O2) inside our body.
b. Remove Carbon Dioxide ( CO2) from our body.
protecting body from temperature fluctuations and entrance of Pathogens.
Production of Sounds.
RESPIRATORY SYSTEM
Composed of the nose, the pharynx, and the larynx, the organs of the upper respiratory tract are located outside the chest cavity.
Upper respiratory tract
Composed of the trachea, the lungs, and all segments of the bronchial tree (including the alveoli), the organs of the lower respiratory tract are located inside the chest cavity.
Lower respiratory tract
Movement of air into and out of the lungs
Pulmonary ventilation
Exchange of gases between the air and the blood in the lungs oxygen diffuses into the blood, carbon dioxide diffuses into the lungs.
External respiration
Movement of gases from the lungs to the body cells and back, accomplished by the cardiovascular system.
Transport
Exchange of gases between the blood and body cells. oxygen diffuses into the cells and carbon dioxide moves into the blood.
Internal respiration
functions to allow air to enter the respiratory system upon respiration. Structures within the cavity regulate the flow of air and particles it contains.
Nasal Cavity
_____________ of the nasal cavity regulates the sense of smell.
Olfactory
The _____________ is the dilated area at the nostril opening.
Nasal vestibule
The _____________ of the nasal cavity refers to the passages through which air travels into the respiratory system.
Respiratory section
The ___________ receptors (receptors for smell sensations) are found in this section of the nasal cavity. Bowman’s glands are also found in this section of the nasal cavity.
Olfactory Region
The _______________ of the nasal mucosa expand the total surface area of the mucosa and create turbulence in air entering the respiratory passage. This causes air to swirl as it moves through the nasal cavity and increases contact between infiltrating air and the nasal mucosa, allowing particles in the air to be trapped before entering other parts of the respiratory system (e.g. the lungs).
conchae (turbinate bones)
secrete the majority of the mucus which overlies the nerves of the olfactory system. They also secrete the pigment which gives this mucus its yellow colour.
Bowman’s glands
______________ which project from the epithelium and line the nasal mucosa create motions which drain mucus from the nasal passage to the throat from where it is swallowed and digested by stomach juices.
Cillia
is a tube formed by skeletal muscle and lined by mucous membrane that is continuous with that of the nasal cavities.
Pharynx
superior region behind nasal cavity
Nasopharynx
middle region behind mouth
Oropharynx
inferior region that connects to larynx
Laryngopharynx
The ___________ is a cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs.
Larynx
largest of the hyaline cartilages, protrudes anteriorly and is commonly called the Adam’s apple
Thyroid Cartilage
forms the attachment to trachea
Cricoid cartilage
flap of elastic cartilage that guards the entrance into the larynx; when we are breathing the flap is open, when we swallow, the larynx is pulled upward and the ________ closes
Epiglottis
folds within the larynx that vibrate with expelled air
Vocal cords (vocal folds)