What is stimulation?

Which of the following substance acts as stimulator?

Which of the following acts as stimulator ?

Which of the following substance acts as stimulator ?

Fill up the blanks A to C with correct combination of terms,Estrogens produce wide ranging actions such as stimulation of growth and activities of -A- secondary sex organs,development of growing -B-,appearance of female secondary sex characters (e.g., high pitch of voice ,etc),-C- gland development.

What is irrigation? What are the types in it?

What is fertilization? What is its result?

What stimulates stomach muscle into action ?

Name the alkaloid that acts as stimulant of central nervous system.

Read the following passage and answer the following. Major cause of feeling hungry lies in the physiology circulation. One of the major substance in blood is glucose. When its levels in the blood fail, we get hunger pangs in stomach. This again involves Production of series of proteins. Some of which are hormones like gherlin. Diencephalon plays an important role in carrying three signals to brain. Another hormone leptin is secreted that suppresses hunger. What would be the result of stimulation of hunger ?

What is Fermentation? What are the uses of it?