|
|
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
![Components of a long bone. The entire long bone is on the left side accompanied by a blowup of the p](https://biology-forums.com/gallery/47/medium_14755_16_09_12_6_09_27_87821312.jpeg)
![Typical ignition timing map developed from testing and used by the vehicle computer to provide the ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_8_05_57_29883514.png)