Hormone Secretion Flashcards
wks 5-9
What are the hyperglycenic hormones?
cortisol,
catecholamines,
growth hormone,
glucagon,
thyroid hormones.
What hormones increases protein synthesis?
(at low levels) Thyroid H
GH
Insulin
What hormones are involved in Growth and development? How?
TH
-maturation of CNS
-adult stature
GH
skeletal elongation
-bone formation
What hormones act on bone and cartilage? How?
Thyroid
-stimulates maturation and turnover of materials
GH
-targets chondrocytes = calcified
-osteoblasts migrate to calcified matrix = bone formation
Cortisol
-increased osteoclastic absorption
What hormones increases the mobilisation and utilisation of fats?
GH
Cortisol
Glucagon - just increases use of fatty acids
What hormones increase lipolysis? Glucose sparing.
Catecholamines
GH
What hormones use glucose over fatty acids (store TAGs)
Insulin,
Which hormones increase gluconeogensis?
cortisol
Glucagon
Catecholamines
What is the role of thyroid hormone in carbohydrate metabolism?
Increases glucose absoprtion in GI
stimulates all aspects
hyperglycemic
What is the role of insulin on fat metabolism?
increases storage of Triglycerides in Adipose
inhibtion of fatty acid breakdown in liver
What is the role of glucagon on carbphydrate metabolism?
increased gluconeogenesis
-Increased glycogenolysis
-Breakdown of liver glycogen
What is the role of cortisol on protein metabolism?
increased proteolysis
decreased protein synthesis
How does cortisol increase blood pressure?
increases Na absorption = increased Na in ECF = osmosis means water follows solute = increased blood volume = increased BP
What are the cardiovascular effects of catecholamines?
increased blood flow to skeletal muscles
increased vasconstarction of veins
increased cardiac output
decreased blood flow to GI
(flight/fight responses)
What are the effects of catecholamines on carbohydrates?
Increases blood glucagon/insulin ration (more glucagon)
Increased glycogenolysis, gluconeogenesis and ketogenesis (in liver)
