30 Questions
Which of the following is the main body of a neuron?
Soma
What is the sensory portion of a neuron called?
Dendrite
Which neurotransmitter is the chief excitatory transmitter in the CNS?
Glutamate
Which neurotransmitter opens Cl channels and is the chief inhibitory transmitter in the adult CNS?
GABA
What type of summation occurs when EPSPs created by distant synapses overlap?
Spatial summation
Which ions are involved in creating an IPSP through the opening of Cl channels?
Cl-
What is the mechanism behind facilitation in neurons?
Prolonged elevation of presynaptic calcium levels
What is the function of dendrites in stimulating neurons?
Receiving signals from presynaptic neurons
What is the main body of a neuron called?
Soma
Which neurotransmitter is the chief inhibitory transmitter in the adult CNS?
GABA
Which lobe of the cerebral cortex is responsible for auditory perception, semantics, and memory?
Temporal lobe
Which lobe of the cerebral cortex integrates sensory information from different modalities?
Parietal lobe
Which lobe of the cerebral cortex is the visual processing center?
Occipital lobe
Which division of the nervous system is responsible for responding to and moving about in our environment?
Motor Division
Which level of the central nervous system controls subconscious body activities such as arterial pressure, respiration, and equilibrium?
Lower brain level
Which part of the nervous system is responsible for tactile, visual, auditory, and olfactory sensations?
Sensory Division
Which part of the nervous system processes information and creates memory?
Integrative Division
Which part of the nervous system contains walking circuits, withdrawal circuits, support against gravity circuits, and circuits for reflex control of organ function?
Spinal cord level
Which level of the central nervous system includes the medulla, pons, mesencephalon, hypothalamus, thalamus, cerebellum, and basal ganglia?
Lower brain level
Which level of the central nervous system is associated with the cerebral cortex and never functions alone?
Higher brain or cortical level
Which type of neurotransmitter is usually excitatory in the CNS and accounts for more than 90% of the synaptic connections in the CNS?
Glutamate
What is the mechanism behind synaptic facilitation?
Build-up of calcium ions in presynaptic terminals
What is the chief inhibitory transmitter in the CNS?
Glycine
What is the function of neuropeptides as neurotransmitters?
They cause long-term changes in the number of neuron receptors
What environmental change can increase neuronal excitability and potentially initiate petit mal seizures?
Alkalosis
What is the main characteristic of small molecule, rapidly acting transmitters?
They mediate most acute responses of the nervous system
What is the protective mechanism for excessive neuronal activity and a possible mechanism for ending epileptic seizures?
Synaptic fatigue
What is the main characteristic of neuropeptides as neurotransmitters?
They cause long-term changes in the number of neuron receptors
What is the process of neurotransmission that takes time and allows for the calculation of the number of chemically connected series neurons in a circuit?
Synaptic delay
What is the main characteristic of glutamate as a neurotransmitter?
It is the chief excitatory transmitter in the CNS
Test your knowledge on the organization of the nervous system, synapses, and neurotransmitters with this quiz. Explore the four lobes of the cerebral cortex and their functions, including the frontal lobe and parietal lobe. Gain a deeper understanding of higher mental functions and sensory integration.
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