Download MBBS (Bachelor of Medicine, Bachelor of Surgery) 1st Year, 2nd Year, 3rd Year and Final year Physiology 10 Endocine Introduction PPT-Powerpoint Presentations and lecture notes
Endocrine system maintains homeostasis
Endocrine glands are ductless glands which
secrete secretions, hormones directly into
the blood stream
Hormones are chemical substances that
transfer information from one set of cells
into the other.
The word hormone is derived from a Greek
word "Hormaein" ? to excite or set in motion
The term "Hormone" was first used by
E.H.Starling in 1905 to describe Secretin
Target organs: express receptors that bind
the specific hormones to initiate a cellular
response
In the dark ages, victors of battle used to eat
the organs (brain, heart, gonads) as they
considered them to have powers.
Aristotle noted the behavioral and physical
effects of castration of roosters
Charles Brown Sequard, French physician
gave the concept of endocrine replacement
therapy
Bayliss and Starling, first described hormone -
Secretin
Change in cell function
Control of growth and development
Alteration in body mass and its composition
Reproductive functions
Digestion, utilization and storage of nutrients
Regulation of volume and composition of
fluid compartments
Behavioral changes
Control of senescence
Proteins or peptides:
Insulin
Secretin
IGF (Insulin like Growth
Glucagon
Factors)
VIP
LH
GIP
FSH
ANP
TSH
Calcitonin
HCG
CCK
GH
ADH
Prolactin
Inhibin
HPL
Somatostatin
PTH
ACTH
Amino Acid
Steroid Hormones:
derivatives:
Glucocorticoids
Epinephrine
Mineralocorticoids
Norepinephrine
Estrogen
Dopamine
Progesterone
Serotonin
Testosterone
Thyroxine (T4)
1,25-
Tri-iodothyronine
Dihydroxycholecalcif
(T3)
erol
Feedback control
Neural control
Rhythmic or chronotropic control
Humoral control
Hypothalamus
Hypothalamic
hormones (RH/IH)
Ant. Pituitary
Trophic
hormones
Target organ
Physiological
effects
This post was last modified on 08 April 2022