Question

1.To prevent the entry of food into the trachea, the opening is guarded by _____________.​

Answer 1

Answer:

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Explanation:

epiglottis

The epiglottis is the structure at the top of the image. Prevent food from entering the respiratory tract. The epiglottis is a leaf-shaped flap in the throat that prevents food from entering the windpipe and the lungs. It stands open during breathing, allowing air into the larynx.

Answer 2

Answer:

epiglottis

Explanation:

epiglottis - large , leaf-shaped piece of cartilage lying on top of larynx; during swallowing the larynx elevates, causing the epiglottis to fall on the glottis (opening into larynx) like a lid, closing it off - this prevents food from entering the windpipe (trachea).