|
|
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
![Potency and efficacy: (a) Drug A has a higher potency than drug B. (b) Drug A has a higher efficacy ...](https://biology-forums.com/gallery/28/medium_482573_25_04_17_9_40_44_2836119.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)