5 Questions
What is the main difference between endocrine glands and exocrine glands?
Endocrine glands discharge their secretions directly into the blood stream, while exocrine glands discharge their secretions by ducts to various parts of the body or to the outside of the body.
Give an example of a mixed gland and explain its characteristics.
The pancreas is a mixed gland, having both endocrine and exocrine actions. It releases insulin as a hormone and also releases other enzymes or substances into the body.
How is the endocrine system regulated?
The endocrine system is regulated by feedback, where a signal is sent from the hypothalamus to the pituitary gland to stimulate the secretion of hormones.
What are the two major groups of endocrine organs based on the type of secretion?
The two major groups are: 1) Hormones produced and released in the body (e.g., Pituitary, Thyroid) and 2) Hormones and other enzymes or substances produced and released into the body (e.g., Pancreas - Insulin).
Where is the pituitary gland located and what are its main functions?
The pituitary gland is located at the base of the brain and has an anterior lobe (adenohypophysis) and a posterior lobe (neurohypophysis). Its anterior lobe secretes tropic hormones, which control other glands or act on other tissues.
Test your knowledge of animal endocrinology practical principles and general concepts. Covering the endocrine system, ductless glands, and the functioning of higher organisms at the cellular level.
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