At symmetric synapses the synaptic cleft is narrower than at excitatory synapses, and the postsynaptic density is only about the same width as the presynaptic density. The postsynaptic elements at such synapses include dendritic shafts (Fig. 9.2A and Fig. 9.4) some dendritic spines (Fig.
Capsaicin is the ingredient found in different types of hot peppers, such as cayenne peppers, that makes the peppers spicy hot. You can eat it in raw or cooked peppers or as a dried powder, which you can add to food or drinks.upplement use. When you eat hot peppers or take capsaicin as a dietary supplement, the capsaicin may improve your digestion by increasing the digestive fluids in the stomach and by fighting bacteria that could cause an infection. It may also help fight diarrhea caused by bacterial infection.
Capsaicin is also believed to burn excess fat tissue and to deter the growth of fat cells. Chili pepper is also believed to reduce appetite. This is because capsaicin supposedly stimulates hormones related to appetite, such as norepinephrine, which may be able to decrease hunger cravings in the brain.hili Burn is a diet pill that claims to boost your metabolism with the help of its key ingredient, chillies. Clinical evidence in support of this claim is largely inconclusive.