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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 ...
In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth —height and weight—accelerates in the first half of puberty and is completed when an adult body has been developed.
Spinach helps dilate blood vessels, which can increase blood flow to the genitals. Other greens like kale, cabbage, and bok choy are good sources of folate, which helps reproductive health . Next ...
A popular story about King Umberto I of Italy tells of the king eating in a restaurant and discovering the owner was his dead-ringer double. The story goes that upon talking to the man, Umberto learned of a string of coincidences between their lives, such as: the two men had been born in the same town on the same day, and had both married a woman with the same name, and the restaurant had ...
The prostate, a.k.a. the "male G-spot," can produce mind-blowing orgasms. Sex experts explain where it is, how to stimulate it, and more.
Converted into DHT in the skin, it accelerates growth of androgen-responsive facial and body hair but may slow and eventually stop the growth of head hair. [citation needed] Taller stature is largely a result of later puberty and slower epiphyseal fusion. [citation needed] Overall, male secondary sex characteristics include:
An increase in the M50 indicates that a greater stimulation frequency was required to reach 50% of the MCR, and the reward circuitry has been desensitized by the experimental manipulation. Another way of analyzing the frequency-rate curve between control and experimental conditions is to do a linear regression through the ascending data points ...