Flashcards in Chapter 7 Deck (21):
what are the 3 basic ways hormones act on their cells?
controlling rates of enzymatic activity, controlling transport of ions or molecules, controlling gene expression
what are hormones secreted by?
endocrine glands, or isolated endocrine cells
how do hormones initiate responses?
By binding to target cell receptors
what type are most hormones?
Peptide or Proteins
what is the name of the initial hormones that comes off the ribosome?
Preprohormones are cut by the endoplasmic reticulum creating what?
what happens in post-translational modification?
a prohormone is cut to make an active hormone
why can't peptide hormones enter the cell easily?
they are lipophobic
what hormones is derived from cholesterol?
what type of hormone is lipophilic?
how are steroid hormones transported through the blood/
what are amino acid hormones created from?
tryptophan, or tyrosine
thyroid hormones behave like what type of hormone?
what part of the pituitary is true endocrine tissue?
which part of the pituitary secretes nuerohormones?
the posterior pituitary
which two nuerohormones come from the posterior pituitary?
Oxytocin and Vasopressin
what are the six hormones released by the anterior pituitary?
Prolactin, thyrotropin, adrenocorticotropin, growth hormone, follicle stimulating hormone, luteinizing hormone.
What is secretion of anterior pituitary hormones controlled by?
Nuerohormones from the hypothalamus.
What are the hormones called that control the secretion of other hormones?
two hormones when combined together have a greater effect are called?