VIDEO: Every day arm day.ㅣ The tree was there first ㅣ Preventing food and drink from going to lungs


Every day arm day.

Awesome 9gag.com


The tree was there first


Awesome 9gag.com




How the epiglottis works while swallowing, preventing food and drink from going to lungs


GIF


설명

1. 달인

2. 나무가 우선

3, 음식물과 음료수가 폐로 가는 것을 방지하는 메커니즘

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