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The Respiratory System
Test Description: All about the respiratory system.
Instructions: Answer all questions to get your test result.
1) In humans, most gas exchange occurs between the
A
skin and air
B
alveoli and capillaries
C
excretory tubules and body cells
D
arteries and body cells
2) In humans, which structure prevents food from entering the trachea?
A
mucus membrane
B
epiglottis
C
cartilage ring
D
alveolus
3) An increase in breathing rate can be triggered by an increase in the
A
number of red blood cells
B
number of platelets in the blood
C
oxygen content of the atmosphere
D
carbon dioxide content of the blood
4) Which malfunction of the human body is characterized by an enlargement and degeneration of the alveoli, resulting in decreased lung capacity?
A
leukemia
B
cerebral palsy
C
coronary thrombosis
D
emphysema
5) When humans exhale, air passes from the trachea directly into the
A
alveoli
B
bronchioles
C
bronchi
D
pharynx
6) An allergic reaction characterized by the constriction of bronchial tubes is known as
A
emphysema
B
arthritis
C
asthma
D
coronary thrombosis
7) Which structures in the nasal cavity remove some bacteria and dust from outside air before it enters the lungs?
A
rings of cartilage
B
ciliated mucus membranes
C
lymph nodes
D
thin, moist alveoli
8) A humidifier is a device that adds moisture to dry air. Which part of the human respiratory system has the same function?
A
cartilage rings
B
nasal cavity
C
diaphragm
D
epiglottis
9) Which part of the human respiratory system is correctly paired with a description of its structure?
A
bronchiole--small branching tubule lacking cartilaginous rings
B
alveolus--microscopic sac containing rings of cartilage and ciliated membranes
C
pharynx--cavity lined with flagellated mucus membranes
D
trachea--thin, moist membrane surrounded by capillaries
10) Which statement best describes the function of the respiratory passageways of a human?
A
They transport gaseous cellular wastes from body cells to the lungs for excretion
B
They permit digestive end-products to make contact with body cells
C
They permit exchange between the external atmosphere and the circulatory system
D
They regulate the amount of ammonia and salt dissolved in body fluids
*select an answer for all questions
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