The epithelium of a duct is thicker. Three types of ducts can be found based on the type of epithelium that forms the duct. They are the intralobular duct, interlobular duct, and interlobar duct. The intralobular ducts are formed by the simple cuboidal epithelium and are surrounded by parenchyma cells.
The interlobular ducts are formed by the simple columnar epithelium and are surrounded by the connective tissue. The interlobar ducts are formed by the stratified columnar epithelium and are surrounded by connective tissue. Examples of ducts and their secretions are shown in table 1. Figure 1: Ducts in the Pancreas. A gland is a secreting organ in the body of either plants or animals.
A gland is made up of a specialized type of cells in the epithelial tissue. Glands remove materials from the blood in a selective manner and alter and concentrate the materials in the acinus. These materials are secreted either for further use of the body or for excretion.
Glands are made up of either simple cuboidal or columnar epithelium. The two types of glands in the animal body are exocrine glands and endocrine glands. Endocrine glands are ductless glands that produce hormones and secrete them into the blood for the transportation to the target organ.
Exocrine glands produce enzymes and secrete the enzymes to the target through a duct. Figure 2: Endocrine Glands. The pituitary gland, hypothalamus, parathyroid gland, thyroid gland, adrenal gland, and gonads are endocrine glands. Discrete Endocrine Glands - these include the pituitary hypophysis , thyroid, parathyroid, adrenal and pineal glands. Endocrine component of Glands with both an Endocrine and an Exocrine Function.
These include the kidney, pancreas and gonads. This topic only covers the Discrete Endocrine Glands; - pituitary, thyroid parathyroid and adrenal glands. Other endocrine glands are covered in their respective topics. The pineal gland - a small gland mm long is found in the brain, close to the hypothalamus, and is a photoreceptor organ, which is stimulated by information received via the retina, that secretes the hormone melatonin, which appears to regulate the circadian rhythms of the body.
Secretions of this hormone at night, cause a hypnotic effect. Its structure is not covered here. Exocrine and Endocrine glands What is a Gland? Endocrine Glands Hormones co-ordinate, integrate and regulate interdependent processes around the body.
Then there are ducts which carry gametes, e. Any idea about glands and ducts of our body? Biology Coordination and Control Nerves and Hormones. Mandira P. Feb 16, Explanation: Glands are of two types: Exocrine and Endocrine. Related questions How do hormones differ from enzymes and neurotransmitters?
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