The figure below shows that ________.
A) peristalsis moves food down the esophagus
B) air cannot get into the trachea when the epiglottis closes the trachea
C) the trachea is open when you are not swallowing
D) the trachea is closed when you are not swallowing

Question

The figure below shows that ________. 
A) peristalsis moves food down the esophagus 
B) air cannot get into the trachea when the epiglottis closes the trachea 
C) the trachea is open when you are not swallowing 
D) the trachea is closed when you are not swallowing

Quizplus · Accepted Answer

The figure shows the cross-section of the upper respiratory system, which includes the pharynx, larynx, and trachea. The trachea is always open to allow air to flow into the lungs, even when you are not swallowing. The epiglottis closes the trachea only during swallowing to prevent food or liquid from entering the lungs. Peristalsis is not shown in the figure, and air getting into the trachea is not the focus of the image.

The Figure Below Shows That ________