Circulatory System | Periplaneta americana | Grade 11 | Zoology | Telangana

In this video, you will discover how cockroaches circulate their blood through an open circulatory system that is completely different from humans.

You will learn about the haemocoel, its three sinuses, and the function of haemolymph in transporting nutrients and waste.

The video also explains the unique 13-chambered heart of the cockroach and how alary and lateral muscles help pump haemolymph through the body. By the end, you will understand why this simple yet efficient system is perfectly adapted for survival.

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! (https://www.khanacademy.org/science/telengana-class-11-zoology/xa98dabecfd450e4b:periplaneta-americana?lang=en)

Timestamps:
00:00 – Introduction
00:26 – Haemocoel: The Body Cavity
01:00 – Division of Haemocoel into Sinuses
02:15 – Haemolymph: Cockroach Blood
02:55 – Closed vs Open Circulatory System
04:08 – Structure of the Cockroach Heart
04:43 – Mechanism of Blood Flow
05:05 – Role of Alary and Lateral Muscles
07:04 – Summary & Recap

Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month.
Support Us: https://india.khanacademy.org/donate

Created by Khan Academy