ENDOCRINE WORKSHOP Flashcards
what does the endocrine system contain?
Higher centres(brain) Hypothalamus Pituitary Adrenal cortex Gonads (ovaries,testis) thyroid
what are common endocrine disorders?
Diabetes mellitus
(Type 1, Type 2)
Thyroid disease
(Hyperthyroidism, Hypothyroidism)
what is the gonadal function in females?
f
what is the gonadal function in males?
m
what is the Hypothalamic pituitary adrenal axis?
h
what is the Hypothalamic pituitary thyroid axis?
h
how is aldosterone secretion controlled?
independent of cortisol secretion
what hormones are involved in homeostasis?
insulin
glucagon
Glucagon like peptide 1 (GLP-1)
Catecholamines
what is insulin secreted by?
by pancreatic beta cells
what do beta cells sense?
glucose
what does insulin inhibit?
hepatic glucose release
NEFA release from adipose tissue
what does insulin down regulate?
glucagon secretion
what does insulin promote?
tissue glucose uptake
what is glucagon secreted by?
pancreas alpha cells
what is the secretion of glucagon negatively regulated by?
insulin
what is the secretion of glucagon positively regulated by?
catecholamines
what does glucagon promote?
glucose release (liver)
what does glucagon stimulate?
NEFA release adipose tissue
what is GLP-1 secreted by?
small intestine L cells
what is GLP-1 secretion promoted by?
insulin
what does GLP-1 act on?
beta cells -Promotes glucose mediated insulin secretion
what does GLP-1 inhibit?
glucagon secretion
what does GLP-1 delay?
gastric emptying
Suppresses appetite
does GLP-1 have a long or short half-life?
very short
give examples of Catecholamines
adrenaline noradrenaline
what do Catecholamines include?
Hormones and neurotransmitters
what do Catecholamines promote?
glucose release from liver
as hormones
what do Catecholamines stimulate?
glucagon secretion
as neurotransmitters
what are the classifications of diabetes?
type 1 and type 2
what is type 1 diabetes?
Young age
rapid onset, life threatening. Autoimmunity
what is type 2 diabetes?
Middle age
Metabolic, weight gain, excercise
Hypertension; dyslipidaemia; increase in CHD
what is the management of type 1 diabetes?
giving insulin
what is the management of type 2 diabetes?
lifestyle; diet exercise ; prevention