The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Covalent Bonding Can Form Compounds
Amphipathic compounds in aqueous solution
Compounds
Compounds
Hydrolysis reactions for some biochemically important phosphate compounds (part 3)
Endogenous Analgesic Compounds Released After Pain Stimuli