Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Bite Itch
Name: Rebeca
Status: Student
Age: 14
Location: N/A
Country: N/A
Date: N/A 


Question:
Why don't you feel a mosquito bite until after it begins to itch?


Replies:
A mosquitoes has a very tiny probiscis that makes such a small wound in your skin that you usuallly don't feel it. The wound is also so small that blood would almost instantly clot and not flow, so the mosquitoe injects an anti-coagulant to keep blood flowing. It is the anti-coagulant that makes you itch.

J. Elliott


Click here to return to the Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory