Respiratory system

Front

What is a capillary?

Back

A capillary is a small blood vessel that connects arterioles and venules, facilitating the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is the correct order of air flow during inhalation through the respiratory structures: nasal cavity, pharynx, larynx, trachea?

Back

The correct order is: nasal cavity (2), pharynx (3), larynx (1), trachea (4).

Front

Which part of the brain is responsible for controlling breathing?

Back

The medulla oblongata controls breathing.

Front

What surrounds the alveoli in the lungs?

Back

The alveoli are surrounded by capillaries.

Front

What are the two main branches that come from the trachea?

Back

The two main branches are the bronchi.

Front

What is the primary function of the respiratory system?

Back

The primary function of the respiratory system is to facilitate gas exchange, providing oxygen to the body and removing carbon dioxide.

Front

What is the role of the larynx in the respiratory system?

Back

The larynx, also known as the voice box, is responsible for sound production and protecting the trachea against food aspiration.

Front

What is the function of the trachea?

Back

The trachea serves as the main airway, conducting air to and from the lungs.

Front

What is the significance of the alveoli's thin, moist membranes?

Back

The thin, moist membranes of the alveoli allow for efficient gas exchange between air and blood.

Front

How does the diaphragm contribute to breathing?

Back

The diaphragm contracts and flattens during inhalation, increasing the thoracic cavity volume and drawing air into the lungs.