|
|
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The human body produces and destroys 15 million blood cells every second.
Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.
Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
![The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_29_07_20601601.jpeg)
![Feelings of competence, independence, and relatedness lead to a sense of overall well-being in any ...](https://biology-forums.com/gallery/27/medium_660366_07_04_17_11_42_09_275322425.jpeg)
![The macula densa and the juxtaglomerular (JG) cells. Osmoreceptors in the macula densa sense low ...](https://biology-forums.com/gallery/28/medium_482573_28_04_17_1_26_04_285532143.jpeg)