Respiratory Flashcards
Which of the following is not a function of the nose?
Gas exchange
Filtering air
Humidification
Warming air
The correct answer is Gas exchange.
Gas exchange occurs in the alveoli and not in the nose.
The ________________ is a passage for air and food.
Pharynx
Bronchi
Alveoli
Larynx
The correct answer is Pharynx.
The pharynx is a passage that starts behind the nasal cavity. It runs behind the mouth and larynx and continues on as the esophagus.
Which of the following is also called the voice box?
Larynx
Trachea
Nose
Pharynx
The correct answer is Larynx.
The larynx is also called the voice box.
Which structure divides into the left and right bronchi?
Pharynx
Larynx
Bronchioles
Trachea
The correct answer is Trachea.
The trachea conducts air from the larynx to the lungs. It divides into the right and left bronchi.
The cartilaginous structure which covers the larynx during swallowing is called the ____________.
Epiglottis
Trachea
Cilia
Diaphragm
The correct answer is Epiglottis.
The epiglottis is a cartilaginous structure that covers the larynx during swallowing. It prevents food particles and water from entering the larynx.
Another name for the windpipe is the _________________.
Trachea
Epiglottis
Lungs
Larynx
The correct answer is Trachea.
The trachea is also called the windpipe. It conducts air to the right and left bronchi.
The part of the lungs where gas exchange takes place is called _________________.
Trachea
Bronchi
Larynx
Alveoli
The correct answer is Alveoli.
The alveoli are sacs at the terminal part of the respiratory tract. This is where gas exchange takes place.
Which of the following structures is correctly paired with its function?
Trachea—Production of sounds
Lungs—Olfaction
Nose—Gas exchange
Diaphragm—Increases volume of thoracic cavity
The correct answer is Diaphragm-Increases volume of thoracic cavity.
Which of the following structure-function pairs is incorrect?
Alveoli—Gas exchange
Pharynx—Prevents food from entering the lungs
Larynx—Phonation
Respiratory cilia—Pushing mucus and trapped particles towards the pharynx
The correct answer is Pharynx—Prevents food from entering the lungs.
The pharynx does not prevent food from entering the lungs.
Which of the following describes exhalation?
Flow of air from the lungs to the exterior through the nose or mouth
Diffusion of oxygen from blood to the alveoli and carbon dioxide from alveoli to the blood
Drawing in air into the lungs through the nose or mouth
Diffusion of oxygen from the alveoli to the blood and carbon dioxide from the blood to the alveoli
The correct answer is Flow of air from the lungs to the exterior through the nose or mouth.
Which of the following does not occur during inspiration?
Increase in intrathoracic pressure
Increase in intrathoracic volume
Elevation of rib cage and sternum
Contraction and flattening of the diaphragm
The correct answer is Increase in intrathoracic pressure.
During inspiration, the inspiratory muscles (external intercostal muscles and diaphragm) contract
The exchange of oxygen and carbon dioxide between the alveoli and blood in the capillaries is called ___________.
Cellular respiration
External respiration
Ventilation
Internal respiration
The correct answer is External respiration.
External respiration refers to the exchange of gas between the alveoli and the blood. Oxygen diffuses from the alveoli into the blood and carbon dioxide diffuses out of the blood and into the alveoli.
What is internal respiration?
Gas exchange between blood and the cells of the body
Diffusion of oxygen from the alveoli to the blood and carbon dioxide from the blood to the alveoli
Drawing air into the lungs through the nose or mouth.
The use of oxygen via metabolism to generate energy by cells of the body
The correct answer is Gas exchange between blood and the cells of the body.
Internal respiration refers to the transport of oxygen and carbon dioxide between body cells and the blood
Which of the following correctly describes aerobic respiration?
Production of energy by cells in the presence of oxygen
Diffusion of oxygen from the alveoli to the blood
Expulsion of carbon dioxide-rich air from the alveoli to the atmosphere
Transport of oxygen from the blood to the cells of the body
The correct answer is Production of energy by cells in the presence of oxygen.
Aerobic respiration refers to the production of energy, carbon dioxide, and water from nutrients by the cells of the body.
The end product of anaerobic respiration is ____________.
Citric acid
Carbon dioxide
Carbon monoxide
Lactic acid
The correct answer is Lactic acid.
Anaerobic respiration refers to the production of energy from body fuels, by the cells of the body, in the absence of oxygen. In humans, the end products of anaerobic respiration are energy and lactic acid.
