HUBS191 final exam with 100% correct Answers 2024/2025

HUBS191 final exam with 100% correct Answers 2024/2025 the central nervous system consists of - answerbrain and spinal cord the peripheral nervous system consists of - answerperipheral nerves In the CNS, a group of cell bodies is called a - answernucleus in the CNS a bundle of axons is called a - answertract in the CNS a group of cell bodies is called - answergrey matter in the CNS a bundle of axons in cerebral cortex or spinal cord is called - answerwhite matter in the PNS a group of cell bodies is called a - answerganglion in the PNS a bundle of axons is called a - answernerve 4 structural components of neurons - answerdendrites, cell body, axon, axon terminal purpose of dendrites - answerreceives and transmits messages Purpose of the cell body - answercontains nucleus and organelles, sums input purpose of the axon - answercarries electrical impulses purpose of the axon terminal(s) - answerneurotransmitter release four types of glial cells - answerastrocytes, microglia, oligodendrocytes, schwann cells three features of astrocytes - answersupply nutrients, ensheath blood capillaries, injury response 2 features of microglia - answerImmune cells of CNS, engulf microorganisms and debris 2 features of schwann cells - answerline fluid filled spaces, circulate CSF 2 features of oligodendrocytes - answersupport nerve fibres, ensheath them with myelin communication through neurons occurs through a junction called a - answersynapse information that goes into the brain is called - answerafferent/ascending response that comes out of the brain is called - answerefferent/descending voluntary muscle control - answersomatic efferent (motor) sensory information we are aware of - answersomatic afferent (sensory) involuntary muscle control - answerautonomic efferent (motor) sensory information we are not aware of - answerautonomic afferent (sensory) What is the myelin sheath made of? - answermultiple shwann cells in line what are the nodes of ranvier - answergaps in the myelin sheath purpose of myelin sheath - answerincrease conduction velocity structural make up of sympathetic nervous system (neurons #2 and #3, in order of pre- ganglionic, distance from CNS and post-ganglionic) - answershort, close, long structural make up of parasympathetic nervous system (neurons #2 and #3, in order of pre- ganglionic, distance from CNS and post ganglionic) - answerlong, distant, sho