|
|
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.
Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
The average office desk has 400 times more bacteria on it than a toilet.
ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.
Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.
![Receptors in the autonomic nervous system: (a) Sympathetic pathway: Ach is released at the ganglia ...](https://biology-forums.com/gallery/28/medium_482573_27_04_17_12_01_39_28424760.jpeg)
![Life cycle of acetylcholine (Ach): (1) Ach is released into the synaptic cleft; (2) Ach binds to ...](https://biology-forums.com/gallery/28/medium_482573_27_04_17_12_01_39_28425468.jpeg)
![Normal depolarization of the motor end plate: (a) Depolarization: Ach causes calcium to be released ...](https://biology-forums.com/gallery/28/medium_482573_27_04_17_11_54_32_284601945.jpeg)