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Vagusstoff (literally translated from German as "Vagus Substance") refers to the substance released by stimulation of the vagus nerve which causes a reduction in the heart rate. Discovered in 1921 by physiologist Otto Loewi , vagusstoff was the first confirmation of chemical synaptic transmission and the first neurotransmitter ever discovered.
He called the unknown chemical Vagusstoff, naming it after the nerve and the German word for substance. It was later found that this chemical corresponded to acetylcholine . His experiment was iconic because it was the first to demonstrate the endogenous release of a chemical substance that could cause a response in the absence of electrical ...
Sex experts explain where it is, how to stimulate it, and more. The prostate, a.k.a. the "male G-spot," can produce mind-blowing orgasms. ... The Best Hair Growth Shampoos for Men to Buy Now. 25 ...
Testosterone is the primary male sex hormone and androgen in males. [4] In humans, testosterone plays a key role in the development of male reproductive tissues such as testicles and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.
If you are looking for a less expensive shampoo for hair growth, Keeps is a company similar to Rogaine, with 100% of its efforts devoted to restoring men's hair health. They offer free ...
The genes primarily determine the amount, patterns and thickness of chest hair. Some men are very hairy, while others have no chest hair at all. All ranges and patterns of hair growth are normal. The areas where terminal hair may grow are the periareolar areas , the centre and sides of the chest and the clavicle collarbone.
3. Folic Acid. Folic acid is a synthetic form of folate, a B vitamin found naturally in many foods. If you eat lots of dark leafy greens (like broccoli, spinach and asparagus), beans, nuts, seeds ...
This is an illustration demonstrating the Wolfsdorf Staging for axillary hair development in children. [1] [2]Underarm or axillary hair goes through four stages of development, as staged by the Wolfsdorf Axillary Hair Scale, [2] driven by weak androgens produced by the adrenal in males and females during adrenarche, and testosterone from the testicle in males during puberty.