The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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?
To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
The lymphatic system
Endocrine System
Shark Circulatory System
When the EGR valve opens, exhaust gases flow through the valve and into passages in the intake ...