question

The parasympathetic nervous system

answer

stimulates digestion and slows heartbeat.

question

The movement of positively charged sodium ions across the membrane of a neuron can produce a(n)

answer

action potential.

question

The central nervous system consists of

answer

the brain and the spinal cord.

question

Hormones are the chemical messengers of the

answer

endocrine system.

question

Which part of a neuron is often encased by a fatty myelin sheath?

answer

axon

question

Sensory neurons transmit signals to

answer

interneurons.

question

An accelerated heartbeat is to a slowed heartbeat as the ________ nervous system is to the ________ nervous system.

answer

sympathetic; parasympathetic

question

Which is the correct sequence in the transmission of a neural impulse?

answer

dendrite, cell body, axon, synapse

question

Epinephrine and norepinephrine are ________ that are released by the ________ gland.

answer

hormones; adrenal

question

In the process of beginning an action potential, the threshold refers to

answer

a minimum intensity of excitatory minus inhibitory stimulation.

question

Some neurons enable you to grasp objects by relaying outgoing messages to the muscles in your arms and hands. These neurons are called

answer

motor neurons.

question

The two divisions of the peripheral nervous system are the

answer

somatic nervous system and the autonomic nervous system.

question

A biological psychologist would be most interested in conducting research on the relationship between

answer

neurotransmitters and depression.

question

The slowdown of neural communication in multiple sclerosis involves a degeneration of the

answer

myelin sheath.

question

Alzheimer's disease is most closely linked to the deterioration of neurons that produce

answer

acetylcholine.

question

Neural stimulation that exceeds a threshold triggers

answer

an action potential.

question

Seizures are likely to be associated with an

answer

undersupply of GABA and an oversupply of glutamate.

question

Sir Charles Sherrington observed that impulses took an unexpectedly long time to travel a neural pathway. His observation provided evidence for the existence of

answer

synaptic gaps.

question

When Dirk was stung by a bee, the pain message was transmitted to his spinal cord by the ________ nervous system.

answer

peripheral

question

The knee-jerk reflex requires the activity of the

answer

central nervous system.

question

The pain of heroin withdrawal may be attributable to the fact that

answer

under the influence of heroin the brain ceases production of endorphins.

question

The endocrine system consists of

answer

set of glands that secrete hormones.

question

The autonomic nervous system helps to maintain a relatively consistent internal body temperature despite environmental temperature changes. This best illustrates

answer

homeostasis.

question

Schizophrenia is most closely linked with excess receptor activity for the neurotransmitter

answer

dopamine.

question

Messages are transmitted from your spinal cord to muscles in your hands by the ________ nervous system.

answer

peripheral

question

Information travels through axons that are bundled into the cables that we call

answer

nerves.

question

The function of dendrites is to

answer

receive incoming signals from other neurons.

question

The neurons of the central nervous system cluster into work groups known as

answer

neural networks.

question

Messages are transmitted from your spinal cord to your digestive system's stomach muscles by the

answer

sympathetic nervous system.

question

The hypothalamus influences the ________ to send messages to the ________.

answer

pituitary; endocrine glands

question

Neurons that function within the brain and spinal cord are called

answer

interneurons.

question

The strengthening of synaptic connections facilitates the formation of

answer

neural networks.

question

Information is carried from the body's tissues and sensory receptors to the central nervous system by

answer

sensory neurons.

question

You come home one night to find a burglar in your house. Your heart starts racing and you begin to perspire. These physical reactions are triggered by the

answer

sympathetic nervous system.

question

Nerve cells receive life-supporting nutrients and insulating myelin from

answer

glial cells.

question

The knee-jerk reflex is controlled by interneurons in the

answer

spinal cord.

question

A myelin sheath is a(n)

answer

fatty tissue layer encasing the axon of a nerve cell.

question

The depolarization of an axon is most likely to occur when

answer

positively charged ions rush into the axon.

question

One function of glial cells is to

answer

provide nutrients to neurons.

question

The parasympathetic nervous system is a division of the ________ nervous system.

answer

autonomic

question

The longest part of a motor neuron is likely to be the

answer

axon

question

A strong stimulus can increase the

answer

number of times the neuron fires.

question

Neural networks refer to

answer

interrelated clusters of neurons in the central nervous system.

question

In a moment of danger, an individual's adrenal glands release

answer

epinephrine

question

The release of epinephrine into the bloodstream is most likely to

answer

increase blood sugar.

question

Oxytocin is secreted by the

answer

pituitary gland.

question

An all-or-none response pattern is characteristic of the

answer

initiation of neural impulses.

question

Morphine and heroin are

answer

opiates.

question

Migraines are most closely linked with an

answer

oversupply of glutamate.

question

A neural impulse is generated only when excitatory minus inhibitory signals exceed a certain

answer

threshold.

question

Which division of the autonomic nervous system arouses the body and mobilizes its energy in stressful situations?

answer

sympathetic nervous system

question

Acetylcholine is a neurotransmitter that

answer

triggers muscle contractions.

question

Biological psychology is best described as the study of the links between

answer

physiological activity and psychological events.

question

When Mr. Valdez thought his 1-year-old daughter had fallen down the stairs, his heartbeat accelerated, his blood pressure rose, and he began to perspire heavily. Mr. Valdez's state of heightened arousal was activated by his ________ nervous system.

answer

sympathetic

question

Dr. Wolski does research on the potential relationship between neurotransmitter deficiencies and mood states. Which psychological specialty does Dr. Wolski's research best represent?

answer

biological psychology

question

The junctions where impulses are chemically transmitted from one neuron to another are called

answer

synapses

question

The release of hormones by the adrenal glands is most likely to trigger

answer

the \"fight-or-flight\" response.

question

An undersupply of the major inhibitory neurotransmitter known as ________ is linked to seizures.

answer

GABA

question

If a professor accused you of cheating on a test, your adrenal glands would probably release ________ into your bloodstream.

answer

epinephrine

question

Increasing excitatory signals above the threshold for neural activation will not affect the intensity of an action potential. This indicates that a neuron's reaction is

answer

an all-or-none response.

question

The part of the peripheral nervous system that controls the movement of your arms when you write is the

answer

somatic nervous system.

question

Group cohesion, pair bonding, and social trust are promoted by pituitary gland secretions of

answer

oxytocin.

question

Central nervous system neurons that process information between sensory inputs and motor outputs are called

answer

interneurons.

question

Which of the following are governed by the simplest neural pathways?

answer

reflexes

question

I am a relatively fast-acting chemical messenger that affects mood, hunger, sleep, and arousal. What am I?

answer

serotonin

question

A slap on the back is more painful than a pat on the back because a slap triggers

answer

more neurons to fire, and to fire more often.

PSY Modules 3

Unlock all answers in this set

Haven't found what you were looking for?

Search for samples, answers to your questions and flashcards