The human body produces and destroys 15 million blood cells every second.
Did you know?
The FDA recognizes 118 routes of administration.
Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Did you know?
Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
A hypothetical scenario illustrating the process of chemical selection
The phosphorus cycle.
The Sunspot Cycle
The cell cycle.
Life cycle of acetylcholine (Ach): (1) Ach is released into the synaptic cleft; (2) Ach binds to ...