chapter 5 terms Flashcards
Endocrine glands
These glands release hormones within the body.
Exocrine glands
These glands use ducts to secrete fluids such as tears and sweat outside the body.
Castration
Removal of the gonads (usually testes), results in behavioral and physiological changes.
Endocrine communication
A hormone is released into the bloodstream to act on target tissues.
Synaptic Communication
Neurocrine function- involves chemical release and diffusion across a synapse.
Autocrine communication
when a released chemical acts on the releasing cell.
Paracrine communication
When the released chemical diffuses to nearby target cells.
Pheromone communication
The hormones can be used to communicate between individuals of the same species.
Allomone communication
chemicals released to facilitate interspecies communication
Neuroendocrine cells
THese neurons release hormonees into the blood.
Neuropeptides
proteins used by neurons that can act as neuromodulators and alter sensitivity
Neuromodulators
these things can modify the reactivity of cells to specific transmitters- they act more slowly that neurotransmitters and have longer lasting effects.
Peptide hormone
Protein hormone, a hormone that is a string of amino acids
Amine hormones
modified amino acids, called monoamine hormones
Steroid hormones
Four rings for carbon atoms (derivatives of cholesterol)
Cyclic adenosine monophosphate
A second messenger that transmits messages of many peptide and amine hormones.
Negative feedback
output feeds back and inhibits further secretion. A type of feedback.
pituitary gland
This gland releases important hormones and has two main parts
Posterior pituitary
This part of the pituitary secretes oxytocin and arginine vasopressin.
Oxytocin
A hormone involved in reporductive and parenting behavior and also in uterine contraction and the milk letdown reflex
Arginine Vasopressin
this hormone increases blood pressure and inhibits urine formation.
Adrenocorticotropic Hormone
Controls production and release of adrenal cortex steroid hormones
Thyroid-stimulating hormone
increases thyroid hormone release
Follicle-stimulating hormone
Stimulates egg containing follicles in females or sperm production in males.