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There are two types of glands: endocrine and exocrine glands. Exocrine glands have ducts that carry the glandular secretion onto a bodily surface. Endocrine glads release hormones into the blood stream via diffusion. They do not have ducts like exocrine glands do.

GK & Current Affairs for PSC Examinations: Endocrine & Exocrine Glands

Figure 2: Subtypes of muscarinic and nicotinic receptors - the peripheral nicotinic receptors at the neuromuscular junction are of the N1 or Nm type and the central nicotinic receptors are of the neuronal nicotinic acetylcholinesterase subtype (Nn or N2). All five (M1 to M5) muscarinic receptor subunits are present in the central nervous system. The peripheral muscarinic receptors are predominantly of the M3 subunit although the M2 subunit is also represented in the heart and exocrine…


Exocrine Glands Exocrine glands – “externally secreting” - secrete their…

Exocrine glands and endocrine glands differ in where they secrete their substances. Exocrine glands secrete their substances through a duct; endocrine glands secrete their substances (hormones) directly to blood for blood transport.