Respiration System 1.2 Flashcards
Which of the following structures changes the volume of the lungs ?
A: alveoli
B: heart
C: trachea
D: diaphragm
Diaphragm
Which of the following statements best describes the primary function of the respiratory system ?
A: it transports oxygen and carbon dioxide to cells all over the body
B: it involves the inhalation and exhilaration of gases into the environment
C: it exchanges gases between the blood and the air in an environment
D: it maintains proper blood level pH
It exchanges gasses between the blood and the air in an environment
Which of the following correctly describes the makeup of the lungs ?
A: right lung : three lobes & left lung: two lobes
B: right lung: two lobes & left lung : two lobes
C: right lung : two lobes & left lung : three lobes
D: right lung: three lobes & left lung: three lobes
Right lung: three lobes & left lung: two lobes
Which of the following statements best explains how the structure of alveoli relates to its function ?
A: alveoli are large to Maximize gas exchange
B: the walls the alveoli are thin to increase the rate of of diffusion
C: the walls of the alveoli are thick to prevent pressure buildup
D: alveoli are small to increase the transportation of cells
The walls the alveoli are thin to increase the rate of diffusion
Which of the following is the correct sequence when tracing the path of air from the upper to lower respiratory tract ?
A : Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles
B: Nasal cavity, larynx, pharynx, trachea, bronchi, bronchioles
C: Nasal cavity, bronchi, bronchioles, trachea, pharynx, larynx
D: Nasal cavity, pharynx, larynx, trachea, bronchioles, bronchi
A : Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles
Surface tension of the alveolar fluid is reduced by the secretion of _______ by the lungs
A: Sodium
B: adrenaline
C: surfactant
D : histamine
C surfactant
Exchange of oxygen and carbon dioxide occurs across the alveolar membrane by the process of _______
A: Active transport
B: Pinocytosis
C: Diffusion
D: Osmosis
C diffusion
Contraction of the diaphragm and external intercostal muscles results in which of the following?
A: decrease in the volume of the thoracic cavity
B: A decrease in alveolar pressure
C: An increase in alveolar pressure
D: forced expiration
B a decrease in alveolar pressure
The respiratory system works closely with the ___________ system in gas exchange.
A: Nervous
B: muscular
C: cardiovascular
D: endocrine
C : cardiovascular
Which of the following parts of the upper respiratory tract is a shared pathway for both food and air?
A: Larynx
B: Bronchi
C: Trachea
D: Pharynx
D: Pharynx
The epiglottis does which of the following?
A: Prevents food from entering the air passage
B: Is part of the cardiovascular system
C: Is a series of cartilaginous rings
D: Filters and moistens inhaled air
A: Prevents food from entering the air passage
Gas exchange between the blood and alveoli would be compromised by an increase in which of the following?
A: Tidal volume
B: Alveolar surface area
C: Respiratory rate
D: Membrane thickness
D: Membrane thickness
Which of the following is correct in relation to expiration in normal breathing? (Select all that apply.)
A: Expiration is a passive process.
B: Expiration is due to contraction of the diaphragm and elevation of the ribs
C: Expiration occurs when the diaphragm and external intercostal muscles relax.
D:Expiration is affected by the elastic properties of the lungs.
A: Expiration is a passive process.
C: Expiration occurs when the diaphragm and external intercostal muscles relax.
D:Expiration is affected by the elastic properties of the lungs.
When someone continuously holds their breath, eventually they will do which of the following?
A: Damage brain cells due to low blood oxygen levels
B: Suffer a stroke due to increased pressure in the arteries
C: Automatically start to breathe when the CO2 levels in the blood reach a high enough value
D: Automatically start to breathe when pH levels increase slightly
C: Automatically start to breathe when the CO2 levels in the blood reach a high enough value
