HORMONE
INTRODUCTION:-
IT
IS A SUBSTANCE OF INTENSE BIOLOGY ACTIVITY THAT IS PRODUCED BY SPECIFIC CELLS
IN THE BODY AND IS TRANSPORTED THROUGH CIRCULATION TO ACT ON ITS TARGET CELLS.
HORMONES
REGULATE BODY FUNCTION TO BRING ABOUT A PROGRAMMED PATTERN OF LIFE EVENTS AND
MAINTAIN HOMEOSTASIS IN THE THE FACE OF MARKEDLY VARIABLE EXTERNAL/INTERNAL
ENVIRONMENT.
HYPOTHALAMIC HORMONE CHEMICAL NATURE
1 THYROTROPIN RELEASING (TRH ) TRIPEPTIDE
2
CORTICOTROPIN RELEASING PEPTIDE
HORMONE (CRH)
3 GONADOTROPIN RELEASING DECAPEPTIDE
HORMONE (GnRH)
4 PROLACTIN RELEASING INHIBITORY DOPAMINE
5 GROWTH HORMONE RELEASING
(GHRH)
PEPTIDE 40,44
6
SOMATOSTATIN
PEPTIDE 14
BODY
FUNCTION MAJOR REGULATOR HORMONE
1
Availability of fuel Insulin, Glucagon,
Growth hormone
2
Metabolic rate Triidothyronine,
Thyroxine
3
Somatic growth
Growth hormone, insulin
4 Sex & Reproduct Gonadotropins, Androgens,
5 Circulating volume
Aldosterone,
Antidiuretic hormone
6 Adaptation to strss Glucocorticoids, Adrenaline
7 Calcium balance Parathormone, calcitonin
Hormones are secreted by the endocrine or ductless glands .THESE ARE:
1 1. PITUITARY
A. Anterior growth hormone(GH),
Prolactin ,Adrenocorticotropic hormone
Gonadotropin
B. POSTERIOR:-oxytocin, Anti
diuretic hormone 2. THYROID:- Thyroxine T4 , triiodothronineT3,
Calcitonin
PARATHYROID:- Parathormone
4. PANCREAS:- Insulin,
Glucagon
5. ADRENALS
A. CORTEX:-
Glucocorticoids, Mineralocorticoids
B. MEDULL:- Adrenaline,
Noradrenaline
6. GONADS:- Androgens
,Estrogens, Progestins
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