Endocrine System Flashcards
Endocrine system is a collection of?
Ductless Glands
What does the endocrine system produce?
Hormones
What is the control centre of the endocrine system?
The Hypothalamus
What determines the amount of hormone released?
The body’s need for the hormone at any given time
Exocrine Gland?
excretes its essential product by way of duct to external environment. -outside of body or surface of body
Endocrine Gland
secrete their hormones directly into blood, lymph or tissue fluid
Autocrine?
relates to hormone that has effect on original cell that produced it
Paracrine?
Relates to hormone with effect on local cells
Anterior Pituitary Gland is responsible for?
production and release of hormones
Hormones Secreted by anterior pituitary?
FSH - Follicle Stimulating Hormone ACTH - Adrenocorticotrophic Hormone TSH - Thyroid Stimulating Hormone LH - Luteinising Hormone ICSH - Interstitial Cell Stimulating Hormone Prolactin Somatropin/Growth Hormone
Follicle Stimulating Hormone?
Responsible for growth of follicles in ovary, targets Sertoli cells causing maturation of sperm (males).
Adrenocorticotrophic Hormone?
Targets cortex of adrenal glands; increase in ACTH stimulates production of corticosteroids from adrenal glands
Thyroid Stimulating Hormone?
Stimulates thyroid gland to release thyroxine, the function of thyroxine is to control the metabolic rate
Luteinising Hormone?
Females - responsible for maturation of follicles, helps ovulation and development of corpus luteum. Released spontaneously in the bitch, only in response to mating in the queen.
Interstitial Cell Stimulating Hormone?
ICSH targets interstitial (Leydig) cells in testicles and stimulates the release of testosterone and contributes to spermatogenesis.