Organs of the human body, which manufacture some liquid products, which are secreted from the cells, are called glands. There are two types of glands:
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Ducted Glands: Ducted glands, also called exocrine glands secrete their product through well defined ducts, e.g., Liver ? production of bile; Lachrymal ? secretes tears in the eyes; Salivary-secretes saliva in the mouth; Sweat glands in the skin ? secrete sweat.
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Ductless Glands: Also called endocrine glands or internally secreting glands, they secrete hormones directly into the blood-stream in response to instructions from the brain.
Ductless Glands
| Thymus |
In early childhood it plays some part in building resistance to diseases and physical development |
| Thyroid |
Regulates metabolism |
| Prostrate |
Regulates blood pressure and sexual potency |
| Gonads |
Relates to reproductive system and secretes sex hormones |
| Adrenal |
Causes acceleration of the breath, heightens emotion and a sudden increase in physical strength during fear or anger |
| Pancreas |
Aids in digestion of proteins, carbohydrates and fats; it secretes insulin and deficiency of insulin causes diabetes |
| Pituitary |
Called the master gland as it controls the other ductless glands and influences growth and metabolism |
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