Endocrine System Flashcards
What do Exocrine glands do?
Secrete products into ducts
What do Endocrine glands do?
Release hormones into blood
What are hormones?
Chemical messengers carried by the blood to target cells
What are the functions of hormones?
Regulation, growth and development, operates reproductive system, establish circadian rhythm
Do hormones operate in sync with the nervous system?
Yes
What are hormones in the endocrine system?
Chemical messengers
What are hormones in the nervous system?
Electrical conduit system
Are hormone responses quicker in the endocrine system or nervous system?
Nervous system
Do hormone responses last longer in the endocrine system or nervous system?
Endocrine system
What are the 3 hormone structures?
Amines, Peptides and proteins, Steroids
Describe briefly, the process of hormone transport, metabolism and excretion.
The endocrine cell secretes the hormone into the blood which goes 1 of 4 ways. Either excreted via urine or feces, inactivated by metabolism, activated by metabolism which will lead to a targeted response, or it just goes straight to the target cells for a response.
What inputs alter the rate of hormone secretion in an endocrine cell?
Nutrients, neurotransmitters, other hormones
What does the posterior pituitary gland (PPG) do in the endocrine system when linking to the hypothalamus?
Hormones are synthesized in the hypothalamus, axons are passed down and are terminated in the PPG and release hormones
What does the anterior pituitary gland (APG) do?
Secretes growth hormone, TCH, ACTH, FSH and LH.
How does the APG and Hypothalamus link?
Secretion of APG hormones is mainly controlled by Hypothalamus hormones via the portal vessels connecting the two
