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WorksheetsRESPIRATION
Total questions: 15
Worksheet time: 8mins
Which of the following is the primary muscle involved in respiration?
a) Intercostal muscles
b) Diaphragm
c) Abdominal muscles
d) Pectoral muscles
The tiny air sacs in the lungs where gas exchange occurs are called:
a) Bronchi
b) Alveoli
c) Trachea
d) Bronchioles
Which structure prevents food from entering the trachea during swallowing?
a) Epiglottis
b) Larynx
c) Pharynx
d) Uvula
Oxygen is transported in the blood by:
a) White blood cells
b) Platelets
c) Hemoglobin in red blood cells
d) Plasma
The process of moving air into and out of the lungs is called:
a) Cellular respiration
b) Breathing
c) Photosynthesis
d) Diffusion
Which part of the brain controls the rate of breathing?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
The main function of the respiratory system is to:
a) Deliver oxygen to body tissues and remove carbon dioxide
b) Deliver nutrients to body tissues
c) Produce red blood cells
d) Maintain body temperature
The voice box, which contains the vocal cords, is also known as:
a) Pharynx
b) Larynx
c) Trachea
d) Esophagus
Which of the following is not a part of the respiratory system?
a) Trachea
b) Lungs
c) Esophagus
d) Bronchi
The exchange of gases between the blood and the cells of the body is called:
a) Internal respiration
b) External respiration
c) Cellular respiration
d) Ventilation
During inhalation, the diaphragm:
a) Relaxes and moves up
b) Contracts and moves down
c) Relaxes and moves down
d) Contracts and moves up
Carbon dioxide is primarily transported in the blood as:
a) Dissolved in plasma
b) Bound to hemoglobin
c) Bicarbonate ions
d) Carbonic acid
The pathway of air from the nose to the lungs follows which order?
a) Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Alveoli
harynx → Alveoli
b) Nasal cavity → Trachea → Pharynx → Larynx → Bronchi → Alveoli
c) Nasal cavity → Larynx → Pharynx → Trachea → Bronchi → Alveoli
d) Nasal cavity → Bronchi → Trachea → Larynx → P
The partial pressure of oxygen is highest in:
a) The alveoli
b) The pulmonary arteries
c) The pulmonary veins
d) The systemic veins
Hyperventilation leads to:
a) An increase in carbon dioxide levels in the blood
b) A decrease in carbon dioxide levels in the blood
c) An increase in oxygen levels in the blood
d) No change in blood gas levels
