Chapter 2 quiz

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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


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