B2 the lung Flashcards
What is the primary function of the lungs?
To facilitate gas exchange, primarily oxygen intake and carbon dioxide removal.
True or False: The lungs are part of the respiratory system.
True
Fill in the blank: The process of breathing in is called _____ and the process of breathing out is called _____
inhalation; exhalation
What is the name of the tiny air sacs in the lungs where gas exchange occurs?
Alveoli
Which muscle is primarily responsible for the process of inhalation?
Diaphragm
What is the role of the bronchi in the respiratory system?
To carry air from the trachea to the lungs.
Multiple choice: What gas do we primarily inhale? A) Nitrogen B) Oxygen C) Carbon Dioxide
B) Oxygen
True or False: The left lung is larger than the right lung.
False
What is the term for the lining of the lungs?
Pleura
Fill in the blank: The _____ is the tube that carries air to the lungs.
trachea
What are the two main parts of the respiratory system?
Upper respiratory tract and lower respiratory tract.
Multiple choice: Which of the following is NOT a function of the lungs? A) Gas exchange B) Regulating blood pH C) Producing hormones
C) Producing hormones
What is the primary gas expelled during exhalation?
Carbon dioxide
True or False: The alveoli are surrounded by capillaries.
True
What is the purpose of surfactant in the lungs?
To reduce surface tension in the alveoli and prevent collapse.
Fill in the blank: The _____ connects the throat to the lungs.
trachea
What do we call the total volume of air that can be inhaled and exhaled in one breath?
Tidal volume
Multiple choice: Which structure helps protect the lungs from foreign particles? A) Cilia B) Alveoli C) Bronchioles
A) Cilia
What is the process by which oxygen moves from the alveoli into the blood called?
Diffusion
True or False: The right lung has three lobes.
True
What is the function of the nasal cavity in respiration?
To filter, warm, and moisten the air we breathe.
Fill in the blank: The _____ is a flap that prevents food from entering the trachea during swallowing.
epiglottis
What is a common disease that affects lung function?
Asthma
Multiple choice: Which of the following is a symptom of lung disease? A) Coughing B) Fever C) Rash
A) Coughing
What is the main purpose of the diaphragm during breathing?
To create negative pressure in the thoracic cavity, drawing air into the lungs.
True or False: Smoking can damage the alveoli.
True
