Question

Draw a labeled diagram of human respiratory system.

Answer 1

Respiratory System:

1. A respiratory system is a system of organs functioning in respiration and in humans comprising the nose, nasal passages, pharynx, larynx, trachea, bronchi, and lungs.
2. The respiratory system is the network of organs and tissues that help with breathing.

Oral cavity:

1. The mouth, or oral cavity, is the first part of the digestive system. The lips, cheeks, and palate form the boundaries.
2. It is adapted to receive food by ingestion, breaking it into smaller particles by chewing, and mixing it with saliva.

Nasal cavity

1. The nasal cavity is on top of the bone that forms the roof of the mouth and curves back to connect with the throat.
2. It helps to keep your nose moist by making mucus.

Larynx

1. The larynx is located within the front of the neck, in front of the lower part of the pharynx, and superior to the trachea.
2. It helps in breathing, voice production, and swallowing food.

Pharynx

1. The pharynx is a hollow tube that starts at the back of the nose, runs down the neck, and ends at the top of the trachea and esophagus.
2. It performs both respiratory and digestive functions.

Trachea

1. The trachea is a tube-like structure within the neck and upper chest.
2. The main function of the trachea is to provide a clear airway for air to enter and exit the lungs.

Bronchi

1. The bronchi are large tubes that connect to the trachea (windpipe).
2. The bronchi function to carry the inhaled air through the functional tissues of the lungs, called alveoli.

Lungs

1. The lungs are located in the chest cavity on either side of the breastbone and are divided into five main sections (lobes).
2. The main role of the lungs is to transfer life-sustaining oxygen to the blood supply.
3. The alveoli are the site of the lung where the exchange of oxygen and carbon dioxide takes place between blood and alveoli during the process of breathing in and breathing out.
4. This process of breathing maintains the respiratory gasses.