Card Set Information
What hormones does the hypothalamus secrete?
What hormones does the pituitary gland secrete?
What hormones do the thymus secrete?
What hormones do the thyroid gland secrete?
What hormones does the Pineal Gland secrete?
What hormones does the Saprarena gland secrete?
What hormones does the Parathyroid gland secrete?
What hormones does the heart secrete?
What hormones do the kidneys secrete?
What hormones does adipose tissue secrete?
What hormones do the testes secrete?
What hormones do the ovaries secrete?
What hormones doe the pancreatic islets secrete?
What are peptide hormones?
in pituitary gland
What secretes steroid hormones?
Where are steroid hormones derived from?
What is the function of eicosanoids?
coordinate cellular activity
affect enzymatic processes
What are target cells?
respond to presenceof hormones
What regulates endocrine reflexes?
What are the triggers of endocrine reflexes?
What are humoral stimuli?
changes in composition of extracellular fluid
What are hormonal stimuli?
the arrival or removal of specific hormones
What are neural stimuli?
arrival of neurotransmitters at neuroglandular junctions
What is significant about positive feedback?
the only process that must be rushed to complete
the secretion of a hormone triggers an effect that further stimulates hormone releases
What is ADH?
anti- diuretic hormone
What is APH?
What are the methods that the hypothalamus uses to regulate activities of neurons?
secrete regulatory hormones
release ADH and oxytocin into pituitary
What is an example of positive feedback?
Oxytocin during labor triggers uterine contractions, which cause more secretions of oxytocin
What do regulatory hormones do?
control activities of endocrine cells in the pituitary gland
What are the classes of regulating hormones?
What does ADH respond to?
increase in electrolytes in blood
decrease in blood volume
decrease in BP
What is the primary function of ADH?
decrease amnt of water lost in kidneys
constrict blood vessels to increase BP
What does oxytocin do?
stimulates contraction of uterine muscles, myoepithelial cells, and the prostate gland
What is TSH?
thyroid stimulating hormone
What type of cells release thyroid hormone?
What is ACTH?
What is the function of TSH?
release steroid hormones by suprarenal gland
What type of cells release ACTH?
Where do hormones leave from?
Where do hormones enter?
what does a hormone d once it gets to its target hormone?
causesit to respond?
What are the 4 groups that hormones are organized into?
amino acid derivatives
Describe amino acid deriviatives.
structurally similar to amino acids
What are examples of amino acid derivatives?
suprarenal medulla hormones
Describe peptide hormones.
chains of amino acids
What are examples of peptide hormones?
all hormones in pituitary gland
Where are examples of steroid hormones?
suprarenal cortex horones
Where are eicosanoids derived from?
What is arachidonic acid?
a fatty acid of cell membranes
What are examples of eicosanoids?
What does prostaglandin do?
What do leukotrienes do?
blood cells production
What does thromboxane do?
What does the ANS center of the hypothalamus do?
controls the suprarenal medulla
The pituitary gland is the ______, which is...?
an extension of the nervous system and gland tissue
Where is the pituitary gland?
attched to hypothalamus via infundibulum
sits in sella turcica
What are the two lobes of the pituitary gland?
Describe the adenohypophysis?
anterior lobe of pituitary gland
releases 9 peptide hormones
Describe the neurohypophysis?
posterior lobe of pituitary gland
releases 2 peptide hromones
Fnctions of neurohypophysis:
What does the release of ADH do?
targets nephrons of kidneys
causes kidneys to retain water
constricts blood vessels
What does the release of oxytocin do?
targets smooth muscles of uterus (so it contarcts)
contractile cells of mammary glands (myoepithelial cells secrete milk)
contarcts smooth muscles of prostate gland
What is the adenohypophysis controlled by?
secretions of regulatory hormones from the hypothalamus
What is the hypophyseal portal system? Where is it?
within infundibulum is a plexus of fenestrated capillaries
How do regulatory hormones get to the adenohypophysis?
leave through the hypothalamus
pass through through portal vessles