The axons of certain neurons are covered by a layer of fatty tissue that helps speed neural transmission. The tissue is...
The Myelin Sheath
A strong stimulus can increase the...
Speed of the impulse the neuron fires
Intensity of the impulse the neuron fires
Number of times the neuron fires
Threshold that must be reached before the neuron fires
The pain of heroin withdrawal may be attributable to the fact that...
Under the influence of long-term heroin use the brain ceases production of endorphins
Under the influence of long-term heroin use the brain ceases production of all neurotransmitters
During heroin withdrawal the brain’s production of all neurotransmitters is greatly increased
long-term heroin use destroys endorphin receptors in the brain
Which is the correct sequence in the transmission of a simple reflex?
Sensory neuron, Interneuron, Sensory neuron
Interneuron, Motor neuron, Sensory neuron
Sensory neuron, Interneuron, Motor neuron
Interneuron, Sensory neuron, Motor neuron
In a resting state, the axon is...
Depolarized, with mostly negatively charged ions outside and positively charged ions inside
Depolarized, with mostly positively charged ions outside and negatively charged ions inside
Polarized, with mostly negatively charged ions outside and positively charged ions inside
Polarized, with mostly positively charged ions outside and negatively charged ions inside
Which of the following is typically controlled by the right hemisphere?
Learned voluntary movements
The part of the human brain that is most like that of a fish is the...
Voluntary movements, such as writing with a pencil, are directed by the...
Sympathetic nervous system
Somatic nervous system
Parasympathetic nervous system
Autonomic nervous system
A neuron will generate action potentials when it...
Remains below its threshold
Receives an excitatory input
Surpasses its threshold of receiving more excitatory than inhibitory inputs
Is stimulated by a neurotransmitter
Which is the correct sequence in the transmission of a neural impulse?
Axon, Dendrite, Cell body, Synapse
Dendrite, Axon, Cell body, Synapse
Synapse, Axon, Dendrite, Cell body
Dendrite, Cell body, Axon, Synapse
Following a head injury, a person has ongoing difficulties staying awake. Most likely, the damage occurred to the...
An experimenter flashes the word FLYTRAP onto a screen facing a split-brain patient so that FLY projects to her right hemisphere and TRAP to her left hemisphere. When asked to say what she saw, the patient will...
Say she saw FLY
Ssay she saw TRAP
Say she saw FLYTRAP
Say she saw TRAPFLY
Which of the following is typically controlled by the left hemisphere?
The left side of the body
Which of the following are governed by the simplest neural pathways?
Physiological drives, such as hunger
Movements, such as walking
Melissa has just completed running a marathon. She is so elated that she feels little fatigue or discomfort. Her lack of pain is probably the result of the release of...
I am a relatively fast-acting chemical messenger that affects mood, hunger, sleep, and arousal. What am I?
The neurotransmitter acetylcholine (ACh) is most likely to be found ...
At the junction between sensory neurons and muscle fibers
At the junction between motor neurons and muscle fibers
At junctions between interneurons
In all of these locations
The gland that regulates body growth is the...
Jessica experienced difficulty keeping her balance after receiving a blow to the back of her head. It is likely that she injured her...
Moruzzi and Magoun caused a cat to lapse into a coma by severing neural connections between the cortex and the...