Respiratory System (TEAS TEST)

Inspiration/inhalation:

- the diaphragm contracts and move down,the intercostal muscle and the ribs expand, increasing the size of the chest cavity, - as the vol. of the chest cavity increase, the pressure inside the chest cavity decreases. -air rushes into the lungs

what is the breathing process controlled by? what does it do?:

-the breathing process: is controlled by the portion if the brain stem called the medulla oblongata. -Medulla Oblongata monitor the level of carbon dioxide in the blood and signals the breathing rate to increase when these levels are too high.

what is the functions of the respiratory system:

1. Main Function: -to supply the body with oxygen and rid the body of carbon dioxide. -this exchange of gasses occurs in millions of tiny alveoli, which are surrounded by blood capillaries.

what is the function of respiratory (Con't):

2. filters air- air is warmed, moistened and filtered as it passes through the nasal passages before it reached the lungs. 3. responsible for speech- where the air passes through the throat, it moves through the larynx (voice box), which vibrates and produce sound, before it enters the trachea (windpipe). - respiratory system is vital in cough production - foreign particles entering the nasal passage or airways are expelled from the body by the respiratory system.

what is the function of the respiratory (Con't):

4. functions in the sense of smell. - Chemoreceptors that are located in the nasal cavity respond to airborne chemicals -repository system also helps the body maintain acid base homeostasis. -Hyperventilation can increase blood pH during acidosis (low pH). -slowing breathing during alkalosis (high pH) helps to lower blood pH.

what are the structure of the lungs:

: are structures that house the bronchi and bronchial network, which extend into the lungs and terminate in millions of alveoli( air sacs). -right lungs: has 3 lobes -left lungs: has 2 lobes, leaving room for the heart on the left side of the body -lungs are surrounded by pleural membrane which reduces friction btw surfaces when breathing.

what are the Structure of respiratory system:

: divided into upper and lower respiratory system. - Upper respiratory: includes nose, nasal cavity, mouth, pharynx, and larynx - Lower respiratory: includes trachea, lungs, and bronchial tree - the respiratory can categorized as part of the: airway, the lungs, or respiratory muscles

what are The structure of the Respiratory muscle:

: included the diaphragm and intercostal muscles -the diaphragm is a dome-shaped muscle that separates the thoracic and abdominal cavities. -intercostal muscle are located btw the ribs.

what are structure of the airways:

: includes nose, nasal cavity, mouth, pharynx, and larynx (voice box), trachea (windpipe), bronchi, and bronchial network - airways is lined with cilia that trap microbes and debris and sweep them back toward the mouth.

what do Respiratory System do:

: respiration includes the movement of air into and out of the lungs. the exchange of gasses btw the air and the blood , the transport of gases in the blood, and the exchange of gases btw the blood and tissues.

what are the Breathing Process:

during the breathing process, the diaphragm and the intercostal muscle contract to expand the lungs

Expiration/exhalation:

when the diaphragm and intercostal muscles relax, the size of the chest cavity deceases, forcing air out of the lungs.