What type of signaling is portrayed? Electrical signal along nerve cell triggers release of neurotransmitter Neurotransmitter diffuses across synapse Target cell is stimulated
The human body is a complex and well coordinated collection of tissues and organs which gives rise to various organ systems of the body. The organ systems of the body are responsible for the execution of all physiological processes in the body. These tissues and organs are formed by different cell types. In order to establish and maintain a coordinated system amongst all the organs in the body, the cells must be able to communicate with each other. This cell to cell communication is achieved through the process of cellular signalling.
Cellular signalling allows the chemical messengers in the body to travel to their target site of action and elicit a response. The process of signalling in the human body can be of three types: autocrine signalling, paracrine signalling, and endocrine signalling. The autocrine signalling is produced by signaling cells that can also bind to the ligand that is released by them. Thus, in autocrine signalling cell targets itself. The endocrine signalling occurs between distant cells and is achieved by hormones. The paracrine signalling occurs between local cells and the response elicited by such signals is quick and lasts only a short amount of time.
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