The CNS receives information about changes affecting internal organs through sensory inputs delivered by. Osomatic afferent neurons. visceral afferent neurons. Osomatic efferent neurons O autonomic efferent neurons O interneurons
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- What pathway has signals moving through sensory nerves to the CNS O Afferent O Interneurons O Efferent O None of these is correct O MotorAn area of the body that provides afferent, sensory efferent You are correct PNS You are incorrect ✓ X You are correct information to the CNS and receives motor information from the CNS is called aThis cell provides myelination within the centrallnervous system, allowing for, speed of conduction of the action potential O astrocytes, increased O microglia, decreased O neurons, decreased O oligodendrocytes, increased
- All afferent signals travel what direction? O None of these is correct O Toward a muscle O Toward the CNS O Away from the CNS O Toward a glandIf there was an injury to the motor (efferent) pathway, which of the following would NOT be affected? O peripheral nervous system somatic nervous system O skeletal muscle O unipolar neurons O the heartAfferent neurons: O Are involved with involuntary actions Are involved with voluntary actions O Send sensory information to the Central Nervous System Send information peripherally to muscles and glands
- Which of the following statements regarding autonomic nervous system function is false? autonomic efferent axons may be found in both cranial and spinal nerves autonomic efferent pathways are usually two neuron pathways preganglionic and postganglionic autonomic efferent neurons synapse in autonomic ganglia O cranial nerves III, VII, IX, and X carry preganglionic parasympathetic axons O none of the above are false (all are true)Gray matter and white matter are the two types of brain matter found in the central nervous system. Gray matter contains nerves that are and white matter contains nerves that are O Unmyelinated , Unmyelinated O Myelinated , Unmyelinated O Myelinated, Myelinated O Unmyelinated , MyelinatedA motor neuron that is leaving the brain and heading out to your knee would be referred to as an sensory neuron two answers are correct afferent neuron O efferent neuon
- What is saltatory conduction? O The conversion of an electrical impulse into a chemical signal at an axon terminal The movement of an action potential from one cell to another using a gap junction O The way an action potential skips from node to node down the full length of an axon The series of events that convert an electrical impulse into a muscle contraction The process of wrapping myelin around a section of an axon.During the relative refractory period, a larger than normal stimulus is required to generate an action potential. Which of the following statement/s explains this situation? O the inside of the cell is hyperpolarized and farther away from threshold O potassium voltage gated channels closed too soon and prevented potassium ions entering the cell potassium voltage gated channels did not all close at the same time and more than the required number of potassium ions exited the cell a and c « Previous NextWhere does an axon potential begin on an axon? O the action-potential initiating hillock (APIH) O the first node of Ranvier O the bouton segmentalis O the axon initial segment (AIS) O the first axon-collateral segment (ACS)