Progress Test 1 Flashcards
The axons of certain neurons are covered by a layer of fatty tissue that helps speed the neural transmission. 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. somatic nervous system
b. autonomic nervous system
A strong stimulus can increase the:
a. speed of the impulse the neuron fires
b. intensity of the impulse 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 attributable 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 neurotransmitters
c. during heroin withdrawal the brains production of all neurotransmitters is greatly increased.
d. heroin destroys endorphin receptions in the brain
a. under the influence of heroin the brain ceases production of endorphins
The effect of a drug that is an antagonist is to:
a. cause the brain to stop producing certain neurotransmitters
b. mimic a particular neurotransmitter
c. block a particular neurotransmitter
d. disrupt a neuron’s all or none firing pattern.
c. block a particular neurotransmitter
Which is the correct sequence in the transmission of a simple reflex?
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
In a resting state, the axon is:
a. depolarized, with mostly positive charged ions outside and positively charged ions inside.
b. depolarized, with mostly positively charged ions outside and negatively charged ions inside.
c. polarized, with mostly negatively charged ions outside and positively charged ions inside
d. polarized, with mostly positively charged ions outside and negatively charged ions inside
d. polarized, with mostly positively charged ions outside and negatively charged ions inside
Dr. Hernandez is studying neurotransmitter abnormalities in depressed patients. She would most likely describe herself as a:
a. personality psychologist
b. phrenologist
c. psychoanalyst
d. biological psychologist
d. biological psychologist
Voluntary movements, such as writing with a pencil, are directed by the:
a. sympathetic nervous system
b. somatic nervous system
c. parasympathetic nervous system
d. autonomic nervous system
b. somatic nervous system
A neuron will generate action potentials when it:
a. remains below its threshold
b. receives an excitatory input
c. receives more excitatory then inhibitory inputs
d. is stimulated by a neurotransmitter
c. receives more excitatory then inhibitory inputs
Which is the correct sequence in the transmission of a neural impulse?
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
Sensory Neuron
insulates the axons of certain neurons
Axon
absorption of excess neurotransmitters
Threshold
Motor neuron
neuron extensions through which messages pass to the other neurons
