Hormones Flashcards
Define endocrine glands
Organs that secrete hormones which travel into the bloodstream
Define Homeostasis
Maintaining internal conditions in response to external stimuli
Define Tropic Hormones
Hormones that target other endocrine glands to release different hormones
List the five characteristics of lipid soluble hormones
Enters cell through lipid bilayer Attach to receptor inside cell Receptor activates a gene in DNA DNA synthesizes a new protein (enzymes) Enzyme catalyses a new reaction
List the four characteristics of water soluble hormones
Can’t enter cell through lipid bilayer
Attach to receptor on cell membrane
begins a series of reaction that will activate an enzyme
A new reaction will occur
What inactivates the hormones after their message has been delivered?
Enzymes
How is the anterior pituitary gland controlled
It’s controlled by releasing hormones from the hypothalamus
What does the posterior pituitary gland do?
They don’t synthesize any hormones they just store and release hormones from the hypothalamus
What hormones does the posterior pituitary gland release
ADH and Oxytocin
What does the anterior pituitary gland do?
Synthesizes and release 6 major hormones
What hormones does the anterior pituitary gland release
hGH, PRL, TSH, ACTH, FSH, LH
What are releasing hormones
Hormones (which come from the hypothalamus) that target the anterior pituitary gland and cause it to release hormones
Where is hGH produced and released from
Anterior pituitary gland
What is the function of hGH
To travel to the liver and stimulate it to release growth factors
What happens when there is an excessive amount of hGH
Gigantism
