Respiratory System Anatomy: Nose and Pharynx Functions

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What is the main cause for an increase in breathing rate?

Increased oxygen in the blood

High concentration of lactate in the blood

Decreased pH of the blood

High concentration of CO2 in the blood (correct)

What stimulates the chemoreceptors to increase breathing?

An increase in carbon dioxide levels

A large drop in oxygen levels (correct)

A decrease in blood pH

A decrease in body temperature

What is hypernea?

Low blood pH causing irregular breathing

Decreased rate and depth of breathing

Increased rate and depth of breathing (correct)

Shallow breathing due to pain

What is the function of fetal breathing movements in the womb?

To practice for breathing air after birth Signup and view all the answers

What causes altitude sickness to start around 8000 feet high?

Low blood oxygen levels Signup and view all the answers

How does carbon dioxide get transported in the blood?

In the form of bicarbonate dissolved in plasma Signup and view all the answers

What is the main function of the nose in the respiratory system?

To warm and humidify incoming air Signup and view all the answers

Where does the gas exchange primarily occur in the respiratory system?

In the alveoli Signup and view all the answers

What is the role of cilia in the nose?

To push mucus and debris towards the throat Signup and view all the answers

Which structure closes off the trachea during swallowing to prevent food from entering the airway?

Epiglottis Signup and view all the answers

What is the purpose of the carina in the bronchial tree?

To divide into right and left bronchi Signup and view all the answers

What structure connects the trachea to the pharynx?

Larynx Signup and view all the answers

What happens when the intrapleural pressure becomes higher than intra-alveolar pressure?

Inspiration occurs Signup and view all the answers

Which parameter determines lung expansion according to Boyles law?

'Pressure and volume are inversely related' Signup and view all the answers

Respiratory System Anatomy: Nose and Pharynx Functions

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