Week One Vocab Flashcards
Hormone
chemical messengers that are created by endocrine glands and are then released to cause some sort of change…ex:
inc/dec enzyme activity
inc/dec gene transcription
inc/dec channel protein activity
Endocrine System
it’s a body system that works w/our nervous system to control + coordinate bodily processes through the use of chemical messengers called hormones (created by endocrine glands)
Paracrine
form of communication, hormones that function at other cell types locally w/o being transported by blood
Autocrine
form of communication, hormones that function at the cell that makes them
Endocrine
form of communication, hormones function at long distances from where they are made (i.e. like another organ or body system)
Tropic hormone
these are hormones that stimulate other endocrine glands so as to produce their particular hormones
Secretion
how hormones are distributed within our bodies and how they are regulated
Target Tissue
The tissue that is being targeted by the hormone, like the tissue that the hormone is changing in some sort of way
proteins in target cell recognize a particular shape on their receptors
Receptor
hormone receptors affect only specific target tissues with specific tissues
Up-Regulation
when less hormones present cause an increase in the number of receptors, which makes the target tissue more sensitive to the hormone, and it makes the tissue respond faster when the hormone appears
so less hormones = up the number of receptors
Down-Regulation
when more hormones are present a decrease in the number of receptors, decreases the sensitivity of target cell to hormone, and this is to prevent over-stimulation
so too many hormones = down the number of receptors
Neural Regulation
form of hormone regulation, and it’s from signals in the NS (i.e. ANS sympathetic response –> epinephrine)
Humoral Regulation
form of hormone regulation, it’s sensing chemical changes in the blood (i.e. sensors in the blood tracking calcium levels)
Hormonal Regulation
form of hormone regulation, other hormones like tropic ones
Hyposecretion
when the amount of hormones that are released is too low