35 Questions
Which lobe of the cerebral cortex is responsible for higher mental functions?
Frontal lobe
Which lobe of the cerebral cortex integrates sensory information from different modalities?
Parietal lobe
Which lobe of the cerebral cortex is responsible for auditory perception, semantics, and memory?
Temporal lobe
Which lobe of the cerebral cortex is the visual processing center?
Occipital lobe
Which artery supplies blood to the frontal lobe?
Anterior cerebral artery
Which type of somatic sensation is stimulated by mechanical displacement?
Mechanoreceptive
Where are Meissner corpuscles primarily located?
Non-hairy skin close to the surface
Which type of nerve fibers are associated with Merkel discs?
Aβ nerve fibers
What is the function of Pacinian corpuscles?
Perception of distant events through transmitted vibrations
Which type of nerve fibers are associated with free nerve endings?
Type C nerve fibers
Which type of transmitter is usually excitatory in the CNS and accounts for more than 90% of the synaptic connections?
Glutamate
What is the function of dendrites in stimulating neurons?
Receive signals from presynaptic neurons
What is synaptic facilitation?
The increased transmitter release produced by an action potential that follows closely upon a preceding action potential
What is the mechanism behind synaptic fatigue?
Repetitive stimulation of excitatory synapses
What is the effect of acidosis on neuronal activity?
Depresses neuronal activity
Which system contains large myelinated nerve fibers and transmits touch and vibration with a high degree of spatial fidelity?
Dorsal column-medial lemniscal system
Which system contains smaller myelinated and unmyelinated fibers for slow transmission and transmits a broad spectrum of modalities including pain and thermal sensations?
Anterolateral system
Which system maintains a high degree of spatial orientation throughout the tract and decussates in the medulla oblongata?
Dorsal column-medial lemniscal system
Which system has a low degree of spatial orientation, decussates in the spinal cord, and transmits a broad spectrum of modalities including crude touch and pressure?
Anterolateral system
Which part of the cortex receives information from the opposite side of the body and has unequal representation of the body?
Sensory cortex
Which type of sensory receptor detects damage (pain receptors)?
Nociceptors
What is the term used to describe the principle that each receptor responds to a limited range of stimuli and has a direct line to the brain?
Labeled-line principle
What generates receptor potentials through mechanical deformation?
Mechanical deformation
Which type of receptor adapts slowly and continues to transmit impulses to the brain for long periods of time while the stimulus is present?
Slowly adapting (tonic) receptors
What is the term used to describe the transmission of receptor information to the brain by different types of neurons?
Somatic sensory afferents
Which part of the nervous system is responsible for responding to and moving about in our environment?
Motor Division
Which level of CNS function controls subconscious body activities such as arterial pressure, respiration, and feeding reflexes?
Lower Brain Level
What is the main body of a neuron called?
Soma
Which neurotransmitter is the chief excitatory transmitter in the CNS?
Glutamate
What type of summation occurs when EPSPs created by distant synapses overlap?
Spatial Summation
Which part of the nervous system is responsible for responding to and moving about in our environment?
Motor Division
What are the three major levels of CNS function?
Spinal cord level, lower brain level, higher brain or cortical level
Which neurotransmitter is the chief excitatory transmitter in the CNS?
Glutamate
What type of summation occurs when EPSPs created by distant synapses overlap?
Spatial summation
Which neurotransmitter opens Cl channels and is the chief inhibitory transmitter in the adult CNS?
GABA
Test your knowledge of the different types of sensory receptors found in the human body. Learn about mechanoreceptors, thermoreceptors, nociceptors, electromagnetic receptors, and chemoreceptors. Discover how these receptors detect and respond to various stimuli such as touch, temperature, pain, light, taste, and smell.
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