Chemical class, source, and action of ADH.
Peptide - Posterior putuitary - increases H2O retention by kidneys.
Chemical class, source, and action of Epinephrine & norepinephrine.
Amine - Adrenal medulla - Increase blood [glucose] and increase metabolism.
Chemical class, source, and action of Follicle-stimulating hormone (FSH).
Protein - Anterior putuitary - Stimulates production of ova & sperm
Chemical class, source, and action of Gonadotropin-releasing hormone (GnRH).
Peptide - Hypothalamus - Regulates secretion of FSH & LH in both males & females.
Chemical class, source, and action of Insulin.
Protein - Pancreas - Lowers blood [glucose]
Chemical class, source, and action of Glucocorticoids.
Steroid - Adrenal Cortex - Increases blood [glucose]
Chemical class, source, and action of mineral corticoids (incl. aldosterone).
Steroid - Adrenal cortex - Increases reabsorption of Na+ * excretion of K+ by kidneys.
Chemical class, source, and action of androgens.
Steroids - Testes - Support sperm formation & dev. & maintenance of male secondary sex characteristics
Chemical class, source, and action of Estrogens.
Steroids - Ovaries - Promote dev. & maintenance of female secondary sex characteristics
Chemical class, source, and action of Progesterones.
Steroids - Ovaries - Promotes growth of uterine lining.
What is a gland?
Groups of cells specialized to manufacture & secrete particular products. They are usually epithelial in origin.
How does the general structure of an endocrine gland differ from that of an exocrine gland?
Exocrine glands secrete hormones through a duct, and are usually associated with epithelium (e.g. mammary, sweat, salivary, and oil glands).
Endocrine glands are ductless and highly vascularized. They have cells that release products into the interstitial fluid, which is then picked up by surrounding capillary beds. Once picked up they're transported through the body (long distance hormones)
How do products of endocrine glands enter the circulatory system?
The products enter through surrounding capillary beds around the gland.
Why don't products of endocrine glands affect every cell in the body?
They done affect every cell because they only act on target cells.
How do endocrine hormones differ from paracrine signals?
Endocrine differ from paracrine in the sense that paracrine signals only have local effects, and travel short distance affecting nearby cells, while hormones travel long distances, and can have long term effects.
Name the 3 chemical classes of hormones. How do they differ in how they communicate with target cells?
Amines & protein/peptides don't pass through the plasma membrane, so receptor must be located on membrane.
Steroids can pass through the membrane, so their target cell is inside the cytosol of the cell.
What is a tropic hormone? Please name an example.
A tropic hormone is a hormone whose target cells are another endocrine organ. E.g. FSH (follicle stimulating hormone) from the enter pituitary (an endocrine gland) affects activity in the ovary (another endocrine gland).