22 Questions
Which type of nerve fibers are responsible for carrying fast pain?
Group Aδ fibers
Which neurotransmitter's release is inhibited by opioids?
Substance P
Which spinal sensory pathway is responsible for discriminating touch and proprioception?
Dorsal column tract
Which spinal sensory pathway is responsible for transmitting crude touch sensations?
Ventral spinothalamic tract
What is the primary role of the spinocerebellar tracts?
Transmitting subconscious proprioceptive information to the cerebellum
What causes neurotransmitters stored in vesicles to be released from the presynaptic neuron?
Opening of calcium ion channels
Which type of potential causes partial local hyperpolarization of the postsynaptic membrane?
Inhibitory postsynaptic potential (IPSP)
What is the main result of integrating inputs from many presynaptic terminals on the postsynaptic neuron?
Overall stimulation or inhibition
What is the effect of opening chloride ion channels on the postsynaptic membrane?
Hyperpolarization by allowing chloride ions to flow out
How do excitatory postsynaptic potentials (EPSP) differ from inhibitory postsynaptic potentials (IPSP)?
EPSP leads to partial local depolarization, while IPSP leads to partial local hyperpolarization.
What is the primary function of the somatic nervous system?
Initiation and coordination of voluntary movements
Which type of synapse allows direct cytoplasmic connection between adjacent cells?
Electrical synapse
What is the primary function of the integrative nervous system?
Controlling thought processes, learning, language, and emotions
How many branches does a typical axon have at its terminal end?
1000 branches
Which neurotransmitters are mentioned in the text as being involved in chemical synapses?
Acetylcholine and norepinephrine
What is the primary function of the autonomic nervous system?
Regulation of involuntary bodily functions
What is the main function of chloride or potassium channels in the postsynaptic neuron?
Allowing positive ions to diffuse inside the neuron
Which type of sensory receptor is activated by pressure or changes in pressure?
Mechanoreceptors
What is the specific function of Hair cells in the organ of Corti?
Activated by pressure
In what way do Chemoreceptors function?
Activated by chemicals
What is the role of Baroreceptors in the carotid sinus and carotid arch?
Activated by pressure
How do Photoreceptors in the retina function?
Activated by light
Learn about the central nervous system and how it regulates various body systems through the endocrine and nervous systems. Explore the anatomical and physiological classifications of the nervous system, along with its functional divisions.
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