Neurobiology Quiz
Preview:
What is the function of endorphins?
A. They increase heart rate
B. They act as natural painkillers
C. They stimulate hunger
D. They decrease breathing rate
Which side of the brain deals with information from the right visual field?
A. Right cerebral hemisphere
B. Left cerebral hemisphere
C. Both hemispheres
D. Neither hemisphere
What are the main parts of the central nervous system (CNS) and the peripheral nervous system (PNS)?
A. Brain and spinal cord; somatic nervous system and autonomic nervous system
B. Brain and spinal cord; sensory and motor neuron pathways
C. Brain and spinal cord; sympathetic and parasympathetic nervous systems
D. Brain and spinal cord; sensory and association areas
What is myelination and how does it affect responses to stimuli?
A. It is the process of forming synapses, which speeds up responses
B. It is the covering of axons with myelin, which speeds up responses
C. It is the removal of myelin, which slows down responses
D. It is the formation of dendrites, which slows down responses
What is the role of the corpus callosum?
A. It processes sensory information
B. It connects the brain to the spinal cord
C. It allows transfer of information between cerebral hemispheres
D. It stores long-term memories
What are the three key features involved in memory?
A. Encoding, storage, and retrieval
B. Encoding, processing, and retrieval
C. Storage, processing, and retrieval
D. Encoding, storage, and processing
How do neurotransmitters at the synapse affect nerve impulses?
A. They block the transmission of impulses
B. They relay impulses from neuron to neuron
C. They degrade impulses
D. They store impulses for later use
What determines whether a neurotransmitter signal is excitatory or inhibitory?
A. The type of neuron
B. The type of receptor on the postsynaptic neuron
C. The amount of neurotransmitter released
D. The speed of impulse transmission
What is meant by the antagonistic action of the sympathetic and parasympathetic nervous systems on heart rate?
A. Both increase heart rate
B. Both decrease heart rate
C. Sympathetic increases heart rate, parasympathetic decreases it
D. Sympathetic decreases heart rate, parasympathetic increases it
How can summation of weak stimuli trigger an impulse?
A. By decreasing the threshold
B. By increasing the number of synapses
C. By releasing enough neurotransmitters to reach the threshold
D. By blocking neurotransmitter reuptake
