Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Did you know?
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
Homunculus maps of human body parts along the cerebral cortex.
Human Tail
Human Lungs Diagram
Structural organization of chromatin in the human centromere
Sensory Differences Between Species