Chapter 10 - Endocrine System Flashcards
allows cells to communicate with each other
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Chemical messengers
controlled release of chemicals from a cell
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Secretion
stimulates the cell that originally secreted it
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Autocrine
act locally on nearby cells; secreted by one cell type into the extracellular fluid and affect surrounding cells of a different type
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Paracrine
activate an adjacent cell
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Neurotransmitter
secreted into the bloodstream by certain glands and cells
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Endocrine
A sample of these chemical messengers is WBCs during an infection
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Autocrine
Affect cells that are distant from their source
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Endocrine
A sample of these chemical messengers is WBCs during allergic reactions
CHOICES:
Neurotransmitter, Neurotransmittance, Paracrine, Autocrine, Endocrine, Secretion, Chemical messengers
Paracrine
the chemical messenger that is secreted into the blood
Hormones
the effectors
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Target tissue
have ducts that carry their secretions to the outside of the body
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Exocrine glands
study of the endocrine system
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Endocrinology
composed of endocrine gland + endocrine specialized cells
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Endocrine system
where hormones produce a coordinated response of the target tissues
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Target tissue
regulate almost every physiological process in our body
CHOICES:
Target tissue, Hormones, Exocrine glands, Endocrinology, Endocrine system
Hormones
hormones derived from cholesterol
CHOICES:
Thyroid hormones, Steroid hormones, Other hormones, Lipid-Soluble Hormones, Water-Soluble Hormones
Steroid hormones
derived from the amino acid tyrosine
CHOICES:
Thyroid hormones, Steroid hormones, Other hormones, Lipid-Soluble Hormones, Water-Soluble Hormones
Thyroid hormones
hormones that are categorized as amino acid derivatives, peptides, or proteins
CHOICES:
Thyroid hormones, Steroid hormones, Other hormones, Lipid-Soluble Hormones, Water-Soluble Hormones
Other hormones
Nonpolar, and include steroid hormones, thyroid hormones, and fatty acid derivative hormones, such as certain eicosanoids
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Lipid-Soluble Hormones
Polar molecules including protein hormones, peptide hormones, and most amino acid derivative hormones
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Water-Soluble Hormones
It dissolves in blood
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Water-Soluble Hormones
Insoluble in water-based fluids, such as the plasma of blood
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Lipid-Soluble Hormones
It travels in the bloodstream attached to binding proteins
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Lipid-Soluble Hormones
They do not readily diffuse through the walls of all capillaries - therefore, they tend to diffuse from the blood into tissue spaces more slowly
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Water-Soluble Hormones
The life span of ________ ranges from a few days to as long as several weeks.
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Lipid-Soluble Hormones
They have relatively short half-lives because they are rapidly degraded by enzymes, called proteases, within the bloodstream
CHOICES:
Lipid-Soluble Hormones, Water-Soluble Hormones
Water-Soluble Hormones
Hormones with short half-lives normally have concentrations that change rapidly within the blood and tend to regulate activities that have a rapid onset and short duration. True or False
True
Lipid-Soluble Hormones are more stable in blood than others. True or False
False - Water-Soluble Hormone
Hormones that circulate in the blood are controlled by ____________
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Humoral stimuli
Occurs when a hormone is secreted that, in turn, stimulates the secretion of other hormones
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Hormonal stimuli
Neurons release a neurotransmitter into the synapse with the cells that produce the hormone
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Neural stimuli
These hormones are sensitive to blood levels of a particular substance, such as glucose, calcium, or sodium
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Humoral stimuli
Blood-borne chemicals can directly stimulate the release of some hormones
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Humoral stimuli
In some cases, neurotransmitter stimulates the cells to increase hormone secretion
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Neural stimuli
Examples of this are hormones from the anterior pituitary gland called tropic hormones
CHOICES:
Hormonal stimuli, Humoral stimuli, Neural stimuli
Hormonal stimuli
This inhibition of hormone release is often when a hormone’s release is sensitive to the presence of a humoral stimulus, there exists a companion hormone whose release is inhibited by the same humoral stimulus
Inhibition of hormone release by humoral stimuli
Neurons inhibit targets just as often as they stimulate targets
Inhibition of hormone release by neural stimuli
Some hormones prevent the secretion of other hormones, which is a common mode of hormone regulation
Inhibition of hormone release by hormonal stimuli
The companion hormone’s effects oppose those of the secreted hormone and counteract the secreted hormone’s action
Inhibition of hormone release by humoral stimuli
If the neurotransmitter is inhibitory, the target endocrine gland does not secrete its hormone
CHOICES:
Inhibition of hormone release by neural stimuli, Inhibition of hormone release by humoral stimuli, Inhibition of hormone release by hormonal stimuli
Inhibition of hormone release by neural stimuli
stimulates the further secretion of the original hormone
CHOICES:
Positive feedback, Negative feedback
Positive feedback
a self-propagating system
CHOICES:
Positive feedback, Negative feedback
Positive feedback
Hormone production is halted
CHOICES:
Positive feedback, Negative feedback
Negative feedback
the hormone’s secretion is inhibited by the hormone itself once blood levels have reached a certain point
CHOICES:
Positive feedback, Negative feedback
Negative feedback
tropic hormones stimulate the release of other hormones
CHOICES:
Positive feedback, Negative feedback
Positive feedback
may inhibit the action
of other, stimulatory hormones to prevent the secretion of
the hormone in question.
CHOICES:
Positive feedback, Negative feedback
Negative feedback
self-limiting system
CHOICES:
Positive feedback, Negative feedback
Negative feedback
where hormones exert action by binding to protein
CHOICES:
Specificity, Receptor site, Target tissue, Receptors
Receptors
the tendency of hormones to bind to one type of receptor
CHOICES:
Specificity, Receptor site, Target tissue, Receptors
Specificity
a portion of each receptor molecule where a hormone binds
CHOICES:
Specificity, Receptor site, Target tissue, Receptors
Receptor site
responding tissue based on the hormone released
CHOICES:
Specificity, Receptor site, Target tissue, Receptors
Target tissue
interaction with cell DNA to regulate transcriptions
Lipid-soluble hormones bind to nuclear receptors
hormone-receptor complex initiates a response inside the cell (G proteins, cAMP, protein kinase)
Water-soluble hormones to membrane-bound receptors
After lipid-soluble hormones diffuse across the plasma membrane and bind to their receptors, the hormone-receptor complex binds to DNA to produce a response. True or False
True
Combination of the hormone and its receptor forms a translation factor. True or False
transcription
__________ receptors that have peptide chains that are anchored in the phospholipid bilayer of the plasma membrane
Membrane-bound
Membrane-bound receptors activate responses in three (3) ways. True or False
False - 2
Activation of G proteins, or intracellular enzymes, elicits specific responses in cells, including the production of molecules called, __________
second messengers
Other receptors directly alter the activity of intracellular enzymes. True or False
True
G proteins consist of three (3) subunits where Alpha is the ______, Beta, and Gamma which is the ______
largest, smallest
In the ________ state, a guanine diphosphate (GDP) molecule is bound to the (a) subunit of each protein
inactive
In ________, guanine triphosphate (GTP) is bound to the (a) subunit
active state
Activated (a) subunits of G proteins can alter the activity of enzymes inside the cell. True or False
True
Hormones that stimulate the synthesis of second messengers can produce an almost instantaneous response because the second messenger influences the existing enzyme. True or False
True