Chapter 2 quiz
What is the difference between receptors and effectors?
both A and C
The refractory period is:
A period where where a cell cannot fire
The brain waves that are characteristic of deep relaxation (frequency of 8-12 cycles per second) are called:
Alpha waves
The limbic system is responsible for all of the following EXCEPT:
Regulating aggression
A neurotransmitter, the bulk of which is found in the gut, where it regulates intestinal activity.
Serotonin
Agonists block or reduce the effects of a neurotransmitter.
false
Neurons will fire regardless of the level of stimulation.
false
Norepinephrine _____ blood pressure and triggers the release of ____ from energy stores.
increase/glucose
The hippocampus is primarily involved in:
learning and memory
Acetylcholine
muscle movement and reinforcement
____ are the building blocks of the brain and are divided into __ categories.
neurons/ three
_______ is defined as the ability to change.
plasticity
Dopamine
pleasure and reinforcement
A drug that blocks the effectiveness of a neurotransmitter.
reputake
The process by which a nerve cell recaptures some of the neurotransmitters has released is called:
reputake
Serotonin
sleep regulation and appetite
Receptors
specialized cells or groups cells that respond to sensory stimulation
______ are drugs that speed up bodily functions, whereas _____ are drugs that slow down bodily functions.
stimulants/ depressants
All of the following are true about neurons EXCEPT:
they clean out debris and form protective coatings around nerves
One of the primary functions of the hypothalamus is homeostasis.
true
The part of the brain that is responsible for reasoning and assessing risk in decision making
Frontal lobe
Agonists
An agent or drug that enhances the activity of some naturally occurring substance.
Psychoactive drugs:
Are a chemical substance that can alter perception, mood, behavior and physiological function
The ______ regulates physiological functions such as respiration, heart rate, temperature, and digestion and includes the sympathetic and parasympathetic systems.
Autonomic nervous system
Acetylcholine is a neurotransmitter involved in the largely unconscious functioning of the ______ nervous system, concerned with functions such as ____ and respiration rates.
Autonomic/heart
Antagonists increase the effectiveness of neurotransmitters.
False
The Cerebellum's principal function is?
Coordinating motor activity and maintaining balance
Low levels of serotonin may be associated with:
Depression
Revonsuo's dream theory suggests:
Dreams provide us the opportunity to practice responding to threats
The Sympathetic nervous system, part of the autonomic nervous system, instigates the physiological responses that accompany _____ behavior.
Emotional
Dendrites are:
Hair-like extensions emanating from the cell body of the neuron that receives impulses
Nerves are made up of bundles of ____.
Neurons
Axons are:
The elongated part of the nerve cell that transmits impulses
Plasticity is the ability to change.
True
Pharmacokinetics
_______ is a term used to describe the path that drugs take through our body, from start to finish.
Norepinephrine
arousal, learning, and memory