Mosquito Bite
A mosquito pushes a thin mouthpart into your skin. Its saliva keeps the bite from hurting and stops blood from thickening, then your body’s reaction makes it itch.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on September 15, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
Age 9: open this week
Browse Age 9In the picture
- Needle-like mouthpart: pierces through the skin surface.
- Clear saliva droplets: enter the skin along the mouthpart.
- Pale immune cells: gather around the punctured spot.
Examples
- A mosquito bite on your arm starts as a small bump.
- The bump itches more when you scratch it.
Key takeaways
- Mosquito saliva stops pain and keeps blood from clotting.
- The itch comes from your body’s reaction, not from the bite itself.
Carry on in the app
Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Get the app
Free app, optional subscription
App Store Google Play