Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
Did you know?
Approximately 25% of all reported medication errors result from some kind of name confusion.
Did you know?
Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Digestive System
GI System
REPRODUCTIVE SYSTEM
Heat Exchanger Block Diagram Feedback Control System
The respiratory system.
Pathway by which the nervous system controls skeletal muscle contraction
