Match Match The Endocrine System a Indicate whether the release of each of the f
ID: 3513780 • Letter: M
Question
Match Match The Endocrine System a Indicate whether the release of each of the following hormones is controlled neurally h Thyroid-stimulating hormone Insulin d. Antidiuretic hormone e. Parathyroid hormone Activity 2: Examining the Microscopic Anatomy of the Pituitary Gland, Thyroid Gland, Parathyrold Gland, Adrenal Gland, and Pancreas 1. ldentify the structures in the accompanying micrographs of endocrine tissue: b. d. g- h. LM (100x) LM (100 LM (100x) atch each of the following cell types to the hormonets) that it produces. a. beta cells 1. parathyroid hormone 2. epinephrine 3. insulin b. follicle cells c. parafollicular cellsExplanation / Answer
3. There are three different forms of stimuli which triggers the release of hormones:
Humoral stimuli: Humoral words refer to anything present in blood besides the circulating hormones (Example includes increased/decreased ion concentration in blood). Humoral stimuli thus control the release of hormones in response to specific changes in extracellular fluids.
Hormonal stimuli: It corresponds to release of hormone in response to hormone (stimuli) released by another endocrine gland.
Neural stimuli: In this the nerve fibres stimulate hormone release.
A. Epinephrine: Neural stimuli. Sympathetic nervous system stimulates the adrenal gland to secrete Epinephrine hormone.
B. Thyroid-stimulating hormone: Hormonal stimuli. Thyrotropin releasing hormone from hypothalmus targets anterior pituitary gland which releases thyroid stimulating hormone which further targets thyroid gland to which releases thyroxine (T4) and triiodothyronine (T3) which increases the basal metabolic rate.
C. Insulin: Humoral stimuli. Whenever there is rise in blood glucose levels, it triggers the release of insulin hormone from pancreas.
D. Antidiuretic hormone : Neural stimuli. Special nerve cells in hypothalamus sense the increased ion concentration in blood which simulates anti-diuretic hormone release from the pituitary gland.
E. Parathyroid hormone: Humoral stimuli. When the calcium levels in blood becomes too low, the parathyroid glands make more parathyroid hormone. Increased parathyroid hormone causes bones to release their calcium into the blood and vice versa. Endocrine gland secretion of hormones is regulated by negative feedback mechanism.