Quiz on Human Respiratory System

What are the two main parts of the human respiratory system?

• Upper and lower respiratory system

• Left and right lungs

• Nasal and oral cavity

• Trachea and bronchi

How many times do humans breathe in a day on average?

• 8,000 to 12,000 times

• 16,000 to 24,000 times

• 24,000 to 30,000 times

• 12,000 to 16,000 times

What is the primary function of the alveoli in the lungs?

• To produce oxygen

• To carry carbon dioxide

• To exchange gases

• To connect the trachea and bronchi

Which muscle contracts to facilitate normal inhalation?

• Diaphragm

• Abdominal muscles

• Intercostal muscles

• Both a and c

What is the process of moving air in and out of the lungs called?

• Gas exchange

• Pulmonary ventilation

• External respiration

• Internal respiration

What structure serves as the organ of phonation?

• Pharynx

• Larynx

• Trachea

• Bronchi

What is the purpose of the chemoreceptors in the blood?

• To regulate blood pressure

• To detect changes in oxygen levels

• To send signals to the brain about breathing rate

• Both b and c

How many lobes does the right lung have?

• Two

• Three

• Four

• Five

What type of blood carries oxygen from the lungs to the body tissues?

• Deoxygenated blood

• Oxygenated blood

• Carbon dioxide-rich blood

• Nutrient-rich blood

Which brain structures are involved in regulating breathing?

• Cerebellum and hippocampus

• Pons and medulla oblongata

• Thalamus and hypothalamus

• Amygdala and corpus callosum