Endocrine System Flashcards
What is a “true” endocrine organ?
Those that have no know function other than hormone production
What are the 5 “true” endocrine organs?
1-Pineal 2-Pituitary (hypophysis) 3-Thyroid 4-parathyroid 5-Adrenal
What organs are “non-Endocrine that produce hormones?
Hypothalamus, Pancreas, small intestine, stomach, kidney, thymus, ovary, testis, heart, Placenta.
What hormone does the pineal gland secrete?
Melatonin
What is Melatonin?
Stimulates the release of some hormones from the hypothalamus and is involved in circadian rhythms.
*is secreted by the Pineal Gland
Where is Melatonin secreted?
The Pineal Gland?
Is the Pineal Gland a true or non true Organ
It is a True Organ
Is the Pituitary Gland(hypophysis) True or Non-true?
True
What is another name for Pituitary gland
Hypophysis
What Hormones are released from the Pituitary gland (hypophysis)
Anterior lobe(adenohypophysis) Somatotropin(growth hormone/GH) Thyrotropin(TSH) Adrenocorticotropic h. (ACTH) Follicle stimulating h. (FSH) Luteinizing h. (LH) Prolactin (PRL) Melanocyte stimulating h. (MSH) Posterior lobe (neurohypophysis) Oxytocin (OXY) Antidiuretic h (ADH)
What is the abv. for Somatotropin
GH-growth hormone
Where is Somatotropin (GH) released from?
Anterior lobe of Pituitary gland (adenohypophysis)
What is Somatotropin (GH)?
Stimulates protein synthesis and general body growth
*Two hypothalamic hormones (GRF and GR-IH) control the secretion of GH
What happens if you get too little/too much Somatotropin (GH)?
Inadequate quantities during childhood and adolescence results in dwarfism. Hypersecretion in immature individuals results in giantism. If hypersecretion is in adult the condition acromegaly results. (osseous enlargements in distal limbs, mandible, and nose.
What is acromegaly?
Occurs because hypersecretion of Somatotropin (GH) in adults. Causes osseous enlargements in distal limbs, mandible and nose.
What type of hormones is Somatotropin (GH)?
Protein
What is the abv. for Thyrotropin?
TSH- also called thyroid stimulating hormone
Where is Thyrotropin (TSH) released
Anterior lobe of pituitary gland (adenohypophysis)
What is Thyrotropin (TSH)
stimulates the thyroid gland to release thyroid hormone.
is under the influence of thyrotropin releasing factor from the hypothalamus.
What is the clinical considerations for Thyrotropin (TSH)
If the diet is deficient in iodine, the thyroid gland cannot manufacture enought thyroid hormone, this causes an increase in TSH release, causing enlargement of thyroid gland, and is diagnosed as endemic goiter
What is the abv. for Adrenocorticotropic h.
ACTH
Where is Adrenocorticotropic h. (ACTH) released
Anterior lobe of the pituitary gland (adenohypophysis)