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408 CH 4
Homeostatic Systems and Drugs
Terms in this set (42)
internal and external changes in the environment -> body self-regulates via nervous system and endocrine system -> equilibrium
affect selected tissues that are designed to receive information; may be highly selective or very general with regard to the cells or organs they influence
are responsible for conducting the homeostatic functions of the brain and other parts of the nervous system by receiving and sending information
supporting cells for neurons, specialized nerve cells
The space impulse messages move in when they are moving from the receiving region of the neuron down to the sending region
receiving proteins on target cells
drug compounds that affect the central nervous system and alter consciousness and perception/how the drug alter and affect the brains mental function
study of cellular DNA and its functions
study of cellular functions and their regulation
the point of communication between one neuron and another
are the receiving regions of a neuron's cell body
receptors activated by opioid narcotic drugs such as heroin and morphine
type of effect: inhibitory; CNS changes: mild euphoria and block pain; drug of abuse: narcotics
biological target of THC in marijuana
type or effect: inhibitory; CNS changes: relaxation and increased sense of well-being; drugs of abuse: tetrahydrocannabinol (marijuana-like) "spice" active ingredient
a type of substance that activates a receptor
a receptor type activated by ACH; usually excitatory
a receptor type activated by ACH; usually inhibitory
agents that mimic the effects of norepinephrine and epinephrine
the brain's reward center
are secreted into the bloodstream and carried by the blood to all the organs and tissues of the body
are structurally related to the male hormone testosterone; sometimes abused by athletes and body builders to improve strength and appearances; controlled as schedule 3 substance
produce growth of muscle mass and increase body weight
chemical messengers; travel and attach to receiving proteins called receptors on target cells
Chemical messengers released by neurons are called ________.
Drugs that affect mood or alter the state of consciousness are called ___________.
____________ are chemical messengers released into the blood by glands.
A _________________ is a minute gap between a neuron and target cell,
across which neurotransmitters travel.
____________ are short branches of neurons that receive transmitter signals.
Receptors activated by opioid narcotic drugs such as heroin and morphine are called __________.
Receptors activated by THC in marijuana are called ___________.
agonistic ; antagonistic
A drug may have two different effects on a receptor when interaction occurs: ______________ or ____________________.
Agents that mimic the effects of norepinephrine or epinephrine are ___________.
Male sex hormones are called _____________.
The natural neurotransmitter that activates cannabinoid receptors is ___________.
There are two main types of cells in the brain, one type is the neuron, the other is the ____________.
SEROTONIN: type of effect: inhibitory; CNS changes: sleep relaxation, sedation; drug of abuse: LSD ; DOPAMINE: type of effect: inhibitory-excitatory; CNS changes: euphoria, agitation, paranoia; drugs of abuse: amphetamines, cocaine, "bath salt" active ingredients ; GABA: type of effect: inhibitory; CNS changes: sedation, relaxation, drowsiness, depression; drugs of abuse: alcohol, valium-type barbiturates
Identify and describe three neurotransmitters.
cerebral cortex: helps interpret, process, and respond to information; selects appropriate behavior and suppresses inappropriate behavior ; insula: implicated with drug addiction; connected with the pleasure pathways, and its important motivation ; hypothalamus: controls endocrine and basic body functions
Identify three brain regions that are influenced by drugs of abuse and describe characteristics of each.
impulse moves from the receiving region of the neuron down the axon to the sending region; neurotransmitters carry the message in them and send it to the next neuron -- the neurons are separated by a synapse; neurotransmitters travel and attach to the receiving proteins called receptors on target cells
Describe the process of sending messages by neurons.
Athletes are attracted to androgens because they produce growth of muscle mess and increase body weight. A few negative side effects of androgens are weight gain, mood changes and increased aggression, male pattern baldness, and breast development. Yes i think the classifying of anabolic steroids as Schedule III drug is justified. Anabolic steroids do not serve a reasonable medical treatment.
Why are many athletes (and some non athletes) attracted to androgens? What are the hormones' positive and negative side effects? Do you think that classifying anabolic steroids as Schedule III drugs is justified?
Damage to the frontal cortex is likely to be responsible for impaired decision-making and behaviors among drug abusers; this inability to make decisions leads to addiction among drug users.
How could damage to the frontal cortex of the brain be associated with drug abuse?
Agonists are substances that activate receptors; antagonists are substances that attach to receptors and prevent them from being activated.
Describe the difference between an agonist and an antagonist drug.
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