Question

question 7 (1 point) learning goal 1: name four parts of the respiratory system in the order that air enters the body, and describe the role they play in respiration.

Explanation:

1. Nose (or Nasal Cavity): Air enters the body through the nose (or nasal cavity). The nasal cavity warms, moistens, and filters the incoming air. It has hairs and mucus that trap dust, pollen, and other particles, preventing them from entering the respiratory system further.
2. Pharynx: After the nasal cavity, air moves into the pharynx, which is a common passageway for both air and food. It helps to direct the air towards the larynx (voice box) and away from the esophagus (food pipe) during breathing.
3. Larynx: The larynx, or voice box, is located below the pharynx. It contains the vocal cords, which are responsible for producing sound. Additionally, the larynx plays a crucial role in preventing food and other foreign objects from entering the trachea (windpipe) by closing the epiglottis (a flap of tissue) during swallowing.
4. Trachea: The trachea, or windpipe, is a tube that connects the larynx to the bronchi. It is lined with cilia and mucus, which help to trap and remove any remaining particles or debris from the air. The trachea also helps to keep the airway open and allows air to flow into the lungs.

Answer:

1. Nose (Nasal Cavity): Warms, moistens, and filters incoming air.
2. Pharynx: Directs air towards the larynx and away from the esophagus.
3. Larynx: Produces sound and prevents foreign objects from entering the trachea.
4. Trachea: Traps debris and allows air to flow into the lungs.