Flashcards in Endocrine System Deck (62)
Which two hormones are released from the posterior pituitary?
What hormones are released by the Anterior Pituitary gland?
What hormones synthesised by the Hypothalamus affect the Anterior Pituitary
Which hormones does the Thyroid Gland Release?
Which hormones does the Parathyroid gland release?
What hormones are released by the Pancreatic Islets?
Where are Adrenocorticoids released from?
What are the names of the different Adrenocorticoids?
Which hormones are released from the Adrenal Medulla?
Which hormones are released from the Ovaries?
Which hormones are released by the testes?
What hormones are released by the kidneys?
What hormones are released by the Gastro-Intestinal Tract?
What hormone is released by Adipose Tissue?
What hormone is released in the heart?
Atrial Natriuretic Peptide (ANP)
What hormone is released by the placenta?
What hormone is released by the Thymus?
Which hormone is controlled by GHRH?
What hormones are controlled by GHIH?
Thyroid Stimulating Hormone
What hormone is controlled by TRH?
Thyroid Stimulating Hormone
Which Hormone is controlled by CRH?
What hormone is controlled by PRH?
What hormone is controlled by PIH?
What hormone is controlled by LHRH?
Follicle Stimulating Hormone
What hormone is controlled by GnRH?
Growth Hormone affects what areas of the body?
Most tissues and many organs
What is the alternative name for Growth Hormone Release Inhibiting Hormone?
What are the target glands or tissues affected by GHRIH?
What is the target gland for TSH?
What is the target tissue for PRL or PIH?
What is the target tissue for FSH and LH?
Ovaries and Testes
Function of Growth Hormone?
Promotes tissue growth (esp. bones & muscles)
Function of Thyroid Stimulating Hormone?
Stimulates growth and activity of thyroid gland and secretion of T3 and T4
Function of Adrenocorticotrophic hormone?
Stimulates the adrenal cortex to secrete glucocorticoids
Function of prolactin?
Stimulates growth of breast tissue and milk production
Function of FSH?
Stimulates production of sperm, Stimulates secretion of oestrogen,
Maturation of ovarian follicles, Ovulation
Function of LH?
Stimulates secretion of testosterone by the testes,
Stimulates secretion of progesterone by the corpus luteum
What is T3?
What is T4?
What mineral is essential for the formation of thyroid hormones?
Why are thyroid hormones referred to as T3 and T4?
Refers to the number of iodine atoms on each molecule
What stimulates the release of TRH?
Low Plasma Glucose Levels
What triggers the release of PTH?
A fall in blood calcium levels
How does PTH affect blood calcium?
It raises levels of blood calcium
What are the target tissues of PTH?
What cells in the thyroid gland release calcitonin?
Parafollicular or C-Cells
How does Calcitonin affect the blood?
Reduces blood calcium levels
What triggers calcitonin?
If blood calcium levels are too high
What are the target tissues of Calcitonin?
What affect does calcitonin have on the renal tubules?
Inhibits reabsorption of calcium in the tubules
How does Calcitonin affect bone cells?
Promotes the storage of calcium
How do thyroid hormones affect cells?
They enter the nucleus and regulate gene expression
Enhance effects of other hormones e.g. adrenaline/noradrenaline
Which is more potent, T3 or T4?
Which is more abundant, T3 or T4?
What are hormones?
Where are lipid and protein hormone receptors located in target cells?
Lipid - inside the cell
Protein - On cell membrane
Where is the pituitary gland located?
Hypophyseal fossa of the sphenoid bone below the hypothalamus
What is an alternative name for the Posterior Pituitary Gland?
What is an alternative name for the anterior pituitary gland?
How large is the pituitary gland?
500g - size of a pea
What is an up growth of glandular epithelium from the pharynx?
Anterior Pituitary Gland