CHAPTER 11 BIO 220 URI Questions and
Correct Answers/ Latest Update / Already
Graded
Nervous System
Ans: Communication system of brain and spinal cord.
Central Nervous System
Ans: Includes the brain and spinal cord.
Peripheral Nervous System
Ans: Consists of nerves, ganglia, and receptors.
Neurons
Ans: Electrically excitable cells transmitting signals.
Glial Cells
Ans: Supportive cells with various functions.
Nerve
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Ans: Bundle of axons outside the CNS.
Cranial Nerves
Ans: 12 pairs originating from the brain.
Spinal Nerves
Ans: 31 pairs originating from the spinal cord.
Ganglion
Ans: Collection of neuron cell bodies outside CNS.
Plexus
Ans: Network of axons and neuron cell bodies.
Homeostasis
Ans: Maintaining internal balance and stability.
Sensory Input
Ans: Monitoring internal and external stimuli.
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Integrating Information
Ans: Processing sensory input in the CNS.
Motor Division
Ans: Transmits signals from CNS to effectors.
Somatic Nervous System
Ans: Voluntary control over skeletal muscles.
Autonomic Nervous System
Ans: Involuntary control over smooth and cardiac muscles.
Sympathetic Division
Ans: Prepares body for physical activity.
Parasympathetic Division
Ans: Regulates resting functions like digestion.
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Enteric Nervous System
Ans: Plexuses within the digestive tract.
Dendrites
Ans: Extensions receiving information from other neurons.
Neuron Cell Body
Ans: Contains organelles for typical cell functions.
Nissl Bodies
Ans: Rough endoplasmic reticulum in neuron cell body.
Action Potentials
Ans: Electrical impulses transmitting signals in neurons.
Axon
Ans: Conducts action potentials from neuron cell body.
Axon Hillock
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