The Respiratory System’s main function is to breathe in oxygen and breathe out carbon dioxide. It also helps protect you from harmful particles and germs and allows you to smell and speak.

Respiratory System: Organs, Facts, Anatomy & Function

https://my.clevelandclinic.org/health/body/21205-respiratory-system

Breathe i…

[Read more]

Three main differences between arteries and veins:

1. Direction: Arteries carry blood away from the heart, while veins carry blood back to the heart.

2. Structure: Arteries have thicker, more elastic walls to handle high pressure, while veins have thinner walls.

3. Valves: Veins have valves to prevent backflow, while arteries generally don\’t.

The digestive system converts the foods we eat into their simplest forms, like glucose (sugars), amino acids (that make up protein) or fatty acids (that make up fats).