Air enters the body through either the open mouth or the nose . It travels down the trachea to the lungs, where the oxygen in it passes into the bloodstream.
Where does air enter the respiratory system?
Air enters the respiratory system through the nose or the mouth . If it goes in the nostrils (also called nares), the air is warmed and humidified.
What is the correct path of air through the respiratory system quizlet?
The path of air through the respiratory tract is: trachea, bronchi, bronchioles, alveoli . It is important to note that no gas exchange takes place in the bronchi, but does in the bronchioles, which are passageways that branch off from the main bronchi and eventually lead to alveolar ducts.
In what order does inhaled air travel into the respiratory system quizlet?
air enters the body thru the nose, pharynx (throat), larynx (voice box), trachea (windpipe), bronchi, bronchioles, the lungs, and eventually the alveoli.
How does air enter the lungs quizlet?
Air travels from outside environment to the lungs, it passes through the following organs: nose, pharynx, trachea and bronchi . ... After air enters an alveolus, oxygen passes through the wall of the alveolus and then through the capillary into the blood. Carbon dioxide and water pass from the blood into the alveoli.
How does air flow into the lungs?
As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air travels to the alveoli, or air sacs.
What is the order of airflow through the respiratory system?
The air that we breathe in enters the nose or mouth, flows through the throat (pharynx) and voice box (larynx) and enters the windpipe (trachea). The trachea divides into two hollow tubes called bronchi.
Which of the following is correct path of air through the respiratory tract?
Respiratory System:
Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
Why do most foreign substances in inspired air fail to reach the lungs?
Most foreign substances in inspired air fail to reach the lungs because of what structures? ... Lungs receive deoxygenated blood . What types of bronchi supply the lungs?
What is the correct order of air flow from the nose to the alveoli in the lungs quizlet?
LIST IN ORDER, THE RESPIRATORY STRUCTURES THAT AIR PASSES THROUGH DURING INSPIRATION. NOSTRIL-> NASAL CONCHAE ->PHARYNX->EPIGLOTTIS->LARYNX->TRACHEA->PRIMARY BRONCHI->SECONDARY BRONCHI->TERTIARY BRONCHI->TERMINAL BRONCHIOLES->RESPIRATORY BRONCHIOLES->ALVEOLAR DUCTS->ALVEOLAR SACS.
Which substance is transferred to the blood as you breathe air into your lungs quizlet?
External respiration is the exchange of oxygen and carbon dioxide in the lungs. When air is inhaled into the lungs, oxygen is moved from the air into the blood.
What is the order of passage as air is inhaled into the human lungs?
Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the pharynx , the larynx, enters the trachea, moves through the bronchi and bronchioles till the alveoli.
What is part of the respiratory zone quizlet?
The conducting zone of the respiratory system includes the nose, pharynx, larynx, trachea, bronchi, and bronchioles (except the respiratory bronchioles).
Why did air enter the lungs quizlet?
A pressure difference between the atmosphere and the chest cavity determine the movement of gases into and out of the lungs. ... When the muscle contracts, the diaphragm flattens and the ribcage lifts, increasing the chest volume, decreasing the pleural pressure. The result is air moving into the lungs during inspiration .
How does air move into the lungs during inhalation quizlet?
When you inhale, the diaphragm moves downward and pressure in the lungs decreases , causing air to flow in. When you exhale, the diaphragm moves upward and the pressure in the lungs increases, pushing the air out.
Why does air flow into the lungs during inspiration?
During inspiration, the diaphragm contracts and the thoracic cavity increases in volume . This decreases the intraalveolar pressure so that air flows into the lungs. Inspiration draws air into the lungs.
