WorksheetsCIDEDCO: Respiratory System
Total questions: 19
Worksheet time: 10mins
The vocal cords are found in the:
Pharynx
Larynx
Changeover of the pharynx to the trachea
Uppermost part of the trachea
The tube in the respiratory system which carries air into the lungs is:
Larynx
Pharynx
Esophagus
Trachea
The place where oxygen leaves the lungs is called:
Arteries
Arterioles
Alveoli
Capillaries
During swallowing, the wind pipe is closed by the:
Larynx
Uvula
Epiglottis
Gullet
Oxygen is taken into the blood from the:
Alveoli
Trachea
Bronchi
Arteries
Exchange of gases during external respiration takes place in the:
Alveoli
Lower bronchi
Bronchioles
Alveolar ducts
Which one of the following processes results in the release of energy in a living cell?
Excretion
Absorption
Respiration
Transpiration
External respiration is:
The use of oxygen for growth and muscle contraction
The exchange of oxygen and carbon dioxide in the lungs
The breakdown of food materials into carbon dioxide
The taking in the oxygen by the body
The exchange of gases between air in the lungs and blood is called:
Internal respiration
External respiration
Metabolism
Inspiration
The function of external respiration is:
Exchange of oxygen and nitrogen into the blood
Removal of carbon dioxide and carbon monoxide from the blood
To carry oxygen into the blood and remove carbon dioxide from it
To carry oxygen in the blood and remove nitrogen from it
Oxygen diffuses from the alveoli to the capillaries because the:
Concentration of oxygen is higher in the capillaries
Alveolar pressure is raised
Concentration of oxygen is lower in the capillaries
Level of carbon dioxide is higher in the capillaries
Oxygen passes from the blood into tissues, and carbon dioxide passes from tissues into the blood by a process known as:
Osmosis
Diffusion
Active transport
Blood pressure
The approximate percentage of oxygen in the atmosphere is:
20%
33%
50%
75%
Which one of the following statements is incorrect?
The nitrogen content of exhaled air and atmospheric air is similar
Exhaled air is generally warmer than atmospheric air
Exhaled air is dryer than atmospheric air
Exhaled air is richer in carbon dioxide than atmospheric air
Exhaled air contains:
Carbon dioxide
Oxygen only
More oxygen than carbon dioxide
More carbon dioxide than oxygen
The brain regulates breathing rate directly by:
The concentration of carbon dioxide in the blood
The pulse rate
The level of carbon monoxide in the blood
The presence of blood in the pulmonary vein
The correct combination of breathing activities:
Diaphragm lowered, ribs raised, air taken in
Diaphragm lowered, ribs lowered, air taken in
Diaphragm raised, ribs lowered, air taken in
Diaphragm rasped, ribs raised, air pushed out
During inspiration:
The diaphragm moves downward
The internal intercostal muscle fibers expand
The ribs extend downward
The pressure in the pelvis cavities decreases
The disadvantage of breathing through the mouth is that the:
Supply of oxygen is often too large
Inspired air is purified insufficiently
Inspired air partly goes into the wind pipe
Inspired air partly goes into the lungs
