The heart and circulatory system are the body's lifeline, delivering blood to the body's .The heart then sends the blood to the lungs to pick up more oxygen.

Name: The heart and circulatory system are the body's lifeline, delivering blood to the body's .The heart then sends the blood to the lungs to pick up more oxygen.
Uploaded: 2019-07-01
Duration: 9 s
Channel: eascience
Description: The heart and circulatory system are the body's lifeline, delivering blood to the body's .The heart then sends the blood to the lungs to pick up more oxygen.