Anterior Pituitary

Question 1

Growth hormone

Answer 1

Stimulates cells to increase protein production and stimulates epiphyseal in long bones, promotes use of fat for energy

Released pulsitile during sleep

Decreases insulin sensitivity, increases lipolysis, promotes cellular growth through retention of phosphorus, potassium and sodium, enhances protein synthesis through increased nitrogen retention

Somatropin increases GH & octretide inhibits GH

Question 2

Prolactin

Answer 2

Breast milk production, breast tissue in preg, suppresses gonadotrophin release and ovulation suppression

Stimulus for release- breast feeding, oestrogens, dopamine antagonists and thyrotrophin-releasing hormone

Inhibited by dopamine agonists like cabergoline

Question 3

Thyroid stimulating hormone

Answer 3

Stimulate release of thyroid hormone from thyroid gland

Increases utilisation of glucose and oxygen, increase blood flow to thyroid gland, iodide trapping by gland, increase iodination of thyroglobulin (increased hormone synthesis), increased proteolysis of thyroglobulin (release of hormone)

Question 4

Gonadotrophin hormones

Lutenizing hormone & follicle stimulating hormone

Answer 4

Stimulate ovaries and tested, development of follicles