Endocrinology Flashcards
Anytime you hear hormones you should always think of
Chemical Signals
When you think of chemical signals you should think of
Ligands
Ligands are what kind of channels?
Ion and protein channels that open and close in response to chemical signals.
Hormones work on one or more groups of cells called
Target Tissues
Hormone Classification:
Autocrine Chemical Signals
chemicals which act locally and only on the same cell type that secrete them.
Hormone Classification:
Paracrine Chemical Signals
Acts locally but on different cell types.
Hormone Classification:
Hormone
Do not act locally. Travel through the blood to the target tissue.
Hormone Classification:
Neurohormone
Are chemical signals that are secreted by neurons
Hormone Classification:
Neurotransmitter
chemical secreted between two neurons
Hormone Classification:
Pheromones
Chemicals that effect the physiology and behavior of individuals in the environment.
The nervous systems uses what to control the body?
The nervous system uses electrical and chemical signals to control the body.
Prolactin-Releasing Hormone
-Initials
-Production site
-Target tissue
-Response
-PRH
Hypothalmus
Anterior pituitary
Increases prolactin Secretion.
The plasma membrane is made mostly of
Lipids and Proteins
Water soluable hormones will move through what?
Extracellular environment. It can’t mix with Lipids membranes because oil and water does not mix.
Hormones are regulated by
Negative Feedback and may be regulated by tropic hormones
The hormone that stays within a narrow range and will only show significant changes over long periods of time
Thyroid Hormone
The hypothalmus connects to the posterior pituitary through the …creating a connection called…
infundibulum
Hypothalmohypophysial tract
The Posterior pituitary is called the
Neurohypophysis
Hypothalmus has two extension sites of
Posterior Pituitary and anterior pituitary
When you think of the posterior pituitary you should think of the
Nervous System
Anterior Pituitary is also called the
adenohypophysis
The Anterior Pituitary is made up of … wheras posterior pituitary is made up of …
epithelial cells
cell bodies of neurons
A…. System will always be two sets of capillary networls with direct connection in between.
Portal
is a hormone which controls the release of another hormone
tropic hormone
