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Essentials of CBN Exam 1 Questions And Accurate Answers
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Essentials of CBN Exam 1 Questions AndAccurate Answers
3 general functions of the nervous system - ANSWER 1. sensory systems
2. motor systems
3. associational systems
sensory systems - ANSWER information about the state of an organism and its
environment
motor systems - ANSWER organize and generate actions
associational systems - ANSWER -link sensory and motor components
-provide basis for "higher order" brain functions
The higher order brain functions include - ANSWER perception, attention, cognition,
emotions, language and rational thinking
Reticular Theory - ANSWER Camillo Golgi: each nerve cell is connected to the next by
protoplasmic links (continuous nerve network)
Neuron Doctrine - ANSWER Santiago Ramon y Cajal and Charles Sherrington: nerve
cells are discrete entities that communicate with each other by means of specialized
contacts
Gene expression - ANSWER The process by which information encoded in DNA directs
the synthesis of proteins
, transcription - ANSWER DNA into mRNA
translation- ANSWER mRNA into proteins
ribosomes- ANSWER protein synthesis
mitochondria- ANSWER ATP production
nucleus- ANSWER DNA storage, site of transcription
Golgi apparatus- ANSWER modifies, sorts and packages proteins
cells of the nervous system- ANSWER 1. neurons
2. glial cells
Parts of neurons- ANSWER 1. axon
2. dendrites
3. cell body
axon function- ANSWER specialized for transmitting electrical signals (action
potentials); vary in length, usually myelinated
dendrites function- ANSWER receive input
cell body function - ANS normal cellular activities
convergence - ANS the number of inputs to a single neuron
divergence - ANS the number of targets innervated by a single neuron
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