psy100 chapter 2

The axons of certain neurons are covered by a layer of fatty tissue that helps speed neural tranmission. This tissue is:

A. dopamine

B. the myelin sheath

C. acetylcholine

D. an endorphin

B. the myelin sheath

Heartbeat, digestion, and other self-regulating bodily functions are governed by the

A. voluntary nervous system

B. autonomic nervous system

C. sympathetic division of the autonomic nervous system

D. somantic nervous system

B. autonomic nervous system

A strong stimulus can increase

A. speed of the impulse the neuron fires.

B. intensity of the impulse of the neuron fires.

C. Number of times the neuron fires.

D. threshold that must be reached before the neuron fires.

C. Number of times the neuron fires.

The pain of heroin withdrawal may be attributed able to the fact that

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

B. under the influence of heroin the brain ceases production of all neurotrsmitters.

C. during heroin withdrawal the brains production of all neurotransmitters is greatly increased.

D. Heroin destroys endorphin receports in the brain.

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

The brain research technique that involves monitoring the brains usage of glucose is called (in abbreviated form) the

A. PET scan

B. fMRI

C. EEG

D. MRI

A. PET scan

The effect of a drug that is antagonist to

A. cause the brain to stop producing certain transmitters.

B. mimic a particular neurotransmitter.

C. block a particular transmitter.

D. Disrupt a neurons all-or-nothing firing pattern.

C. block a particular transmitter.

Through there is no single "control center" for emotions, their regulation is primarily attributed to the brain region known as the

A. limbic system

B. reticular formation

C. brainstem

D. cerebellum

A. limbic system

Which is the correct sequence in the transmission of a simple relfex?

A. sensory neuron, interneuron, sensory neuron

B. interneuron, motor neuron, sensory neuron

C. sensory neuron, interneuron, motor neuron

D. interneuron, sensory neuron, motor neuron

C. sensory neuron, interneuron, motor neuron

Damage to the ___ will usually cause a person to lose the ability to comprehend language.

A. the angular gyrus

B. Broca's area

C. Wernicke's area

D. frontal lobe association area

C. Wernicke's area

Which of the following is typically controlled by the right hemisphere?

A. language

B. learned voluntary movements

C. arithmetic reasoning

D. perpetual tasks

D. perpetual tasks

Dr. Hernandez is studying neurotransmiter abnormalities in depressed patients. She would most likely describe herself as a

A. personality psychologist

B. clinical psychologist

C. psychoanalyst

D. biological psychologist

C. psychoanalyst

The increasing complexity of animals' behavior is accompanied by an

A. increase in the size of the brainstem.

B. increase in the depth of the corpus callosum.

C. increase in the size of the frontal lobes.

D. increase in the amount of association area.

D. increase in the amount of association area.

Voluntary movements, such as writing with a pencil, are directed by the

A. sympathetic nervous system.

B. somantic nervous system.

C. parasympathetic nervous system.

D. autonomic nervous system.

B. somantic nervous system.

A neuron will generate action potentials when it

A. remains below threshold.

B. receives an excitatory input

C. receives more excitatory than inhibitory inputs

D. is stimulated by a neurotransmitter

C. receives more excitatory than inhibitory inputs

Which is the correct sequence in the transmission of neural impuls?

A. axon, dendrite, cell body, synapse

B. dendrite, axon, cell body, synapse

C. synapse, axon, dendrite, cell body

D. dendrite, cell body, axon, synapse

D. dendrite, cell body, axon, synapse

Chemical messangers produced by endocrine glands are called

A. agonists

B. neurtransmitters

C. hormones

D. enzymes

C. hormones

Following a head injury, a person has ongoing difficulties staying awake. Most likely, the damage occurred to the

A. thalamust

B. corpus callosum