Download Alcohol/Drug Use and Abuse CH. 4 | HED 113 - Alcohol/Drug Use & Abuse and more Quizzes Community Health in PDF only on Docsity!
The process of maintaining our internal environment (temperature, water balance, etc.) within certain limits is called Homeostasis. TERM 2 In addition to neurons, the brain contains an even larger number of another cell type known as DEFINITION 2 Glia. TERM 3 Drug molecules must be someone lipophilic (soluble in oil) in order to DEFINITION 3 Readily cross the blood-brain barrier. TERM 4 Three important regions found in every neuron DEFINITION 4 Axon, dendrites, and cell body. TERM 5 Gated ion channels for sodium and potassium open and close in rapid succession, causing the neuron to depolarize and then repolarize, during each DEFINITION 5 Action potential.
Cocaine selectively blocks sodium channels, which is the mechanism that leads to Local anesthetic effects. TERM 7 Parasympathetic and sympathetic refer to the two branches of the DEFINITION 7 Autonomic nervous system. TERM 8 Parkinson's disease produces tremors and muscular rigidity because of damage to DEFINITION 8 Dopamine neurons in the basal ganglia. TERM 9 The neurotransmitter at the end organ of the sympathetic branch of the autonomic nervous system is DEFINITION 9 Norepinephrine. TERM 10 The _____ located at the base of the brain, is an important link between the brain and the pituitary gland, and is involved in feeding, drinking, temperature regulation, and sexual behavior. DEFINITION 10 Hypothalamus.
The ____ neurotransmitters is found in most parts of the brain and is considered inhibitory. GABA. TERM 17 Whether the effect of a neurotransmitter is excitatory or inhibitory depends on DEFINITION 17 The type of receptor. TERM 18 The antipsychotic drug haloperidol (Haldol) works by DEFINITION 18 Blocking dopamine receptors. TERM 19 One biochemical theory of behavior that seems to have some overall merit is the DEFINITION 19 Monoamine theory of mood. TERM 20 Besides MRI, the other brain scanning technique described in the book that can study where specific chemicals are binding in living humans is called DEFINITION 20 PET (position emission tomography).
TRUE-FALSE Unline neurons, glial cells in the brain are purely for support and are incapable of communicating with each other. False. TERM 22 TRUE-FALSE In order for drug molecules to readily cross the blood-brain barrier they must be somewhat lipophilic. DEFINITION 22 True. TERM 23 TRUE-FALSE The complex branching parts of a neuron that receive information from other neurons are called dendrites. DEFINITION 23 True. TERM 24 TRUE-FALSE Information is carried down the axon by ion channels that are responsible for the electrical signal known as an action potential. DEFINITION 24 True. TERM 25 TRUE-FALSE Parkinson's disease is caused by damage to serotonin neurons in the raphe nuclei. DEFINITION 25 False.
