Understanding the Human Respiratory System

What is the primary function of the human respiratory system?

• To transport nutrients to cells

• To remove waste products from the body

• To facilitate the exchange of gases

• To regulate body temperature

What role does the nasal cavity play in the respiratory process?

• It filters, warms, and humidifies the air

• It absorbs nutrients

• It produces digestive enzymes

• It pumps blood through the body

What prevents food from entering the trachea?

• The larynx

• The pharynx

• The esophagus

• The epiglottis

How many lobes does the right lung have?

• One

• Four

• Three

• Two

Where does the actual gas exchange occur in the lungs?

• In the bronchi

• In the alveoli

• In the bronchioles

• In the trachea

Which system works closely with the respiratory system to transport oxygen?

• The endocrine system

• The circulatory system

• The nervous system

• The digestive system

What is the primary muscle involved in breathing?

• The deltoid

• The pectoral muscle

• The diaphragm

• The bicep

How does the body regulate breathing?

• Through blood sugar levels

• Through pH levels

• Through water balance

• Through oxygen levels

What happens to the blood pH when carbon dioxide levels increase?

• It becomes more acidic

• It remains constant

• It fluctuates unpredictably

• It becomes more alkaline

How does the body respond to increased physical activity in terms of breathing?

• Increases breathing depth and rate

• Decreases breathing rate

• Reduces oxygen intake

• Stops involuntary breathing