General Principles Flashcards
chemical signals
released by endocrine glands into bloodstream; hormones/neurotransmitter
endocrine
gland w/out duct; release CS into bloodstream/vasc
exocrine
gland w/duct; release CS into duct
hormones
CS released by endocrine
intercellular communication
between
intracellular communication
within cells
nervous system
release at synapse; fast; specific
pre-synaptic cell
release CS in nervous
post-synaptic cell
in nervous system
neurotransmitter
CS in nervous system
capillary
where CS released in endocrine system
neurosecretory
neuron terminates at capillary
paracrine
communicate between neighbors
autocrine
endocrine communicates with itself
simple circuit
endocrine cell w/sensor transfers CS to target cell
endocrine circuit type 1
sensory component = endocrine cell = target cell; sensor is separate
endocrine circuit type 2
sensory component = primary endocrine gland = secondary endocrine gland = target cell; lots of (-) feedback
modified amino acid CS
low weight; hydrophilic; tyrosine; thyroid hormone
polypeptide CS
vary weight; hydrophilic; chain of AAs
lipid-derived CS
low weight; lipophilic; steroids; cholesterol
neuronal communication
release CS at synapse by pre-synaptic cell; fast and specific
endocrine communication
release CS at capillary; slow and specific/general
epithelial endocrine cell
non-neuronal secretory cells; derived from ectoderm, endoderm, and mesoderm
neurosecretory endocrine cell
modified neuron; does not terminate at synapse; does terminate at capillary
