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TEST BANK FOR NEUROSCIENCE EXPLORING THE BRAIN 4TH EDITION BY MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISO |COMPLETE ANSWER KEY FOR EACH CHAPTER| EXAM WITH ACTUAL QUESTIONS AND COMPLETE 100%CORRECT ANSWERS WITH VERIFIED AND WELL EXPLAINED RATIONALE£10.16
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TEST BANK FOR NEUROSCIENCE EXPLORING THE BRAIN 4TH EDITION BY MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISO |COMPLETE ANSWER KEY FOR EACH CHAPTER| EXAM WITH ACTUAL QUESTIONS AND COMPLETE 100%CORRECT ANSWERS WITH VERIFIED AND WELL EXPLAINED RATIONALE
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TEST BANK FOR NEUROSCIENCE EXPLORING THE BRAIN 4TH EDITION BY MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISO |COMPLETE ANSWER KEY FOR EACH CHAPTER| EXAM WITH ACTUAL QUESTIONS AND COMPLETE 100%CORRECT ANSWERS WITH VERIFIED AND WELL EXPLAINED RATIONALES ALREADY GRADED A+ BY EXPERTS |LATEST VERSI...
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TEST BANK FOR
NEUROSCIENCE
EXPLORING THE BRAIN
4TH EDITION BY MARK F.
BEAR, BARRY W. CONNORS,
MICHAEL A. PARADISO
|COMPLETE ANSWER KEY
FOR EACH CHAPTER|
EXAM WITH ACTUAL
QUESTIONS AND
COMPLETE 100%CORRECT
ANSWERS WITH VERIFIED
AND WELL EXPLAINED
RATIONALES ALREADY
GRADED A+ BY EXPERTS
|LATEST VERSION 2024
WITH GUARANTEED
SUCCESS AFTER
DOWNLOAD ALREADY
PASSED!!!!!!! (PROVEN ITS
ALL YOU NEED TO EXCEL
IN YOUR EXAM
,
,Chapter 1: Neuroscience: Past, Present, and Future Neuroscience: Exploring the Brain, 4th
Edition Bear Test Bank
Cytosol (Cytoplasm) Liquid matter found in cells where the organelles float in it.
- this is found in neurones and it is rich in potassium
the total DNA contained within the chromosomes of each cell is the same however...
The cell uses different parts of the DNA to specialise itself
The nucleus of the neruonres is interrupted by... pores
messenger ribonucleic acid (RNA) - a copy of one strand of DNA that moves out of the
nucleus to direct protein construction
Transciption process in which part of the nucleotide sequence of DNA is copied into a
complementary sequence in RNA
- the RNA is then called a "transcript"
RNA consists of a sequence of four neucleic acids
How many different amino acids are there? 20
the assembly of different proteins from amino acids is called... "translation"
RNA binds to the ribsomes on the sides or floating around in the neurones and ... using the
instructions of the RNA, make proteins out of the amino acids
Rough ER and Soft ER these are the sites in the neurones that are quite rich in
ribosomes for making proteins.
what determines whether RNA chooses to use a free ribosome or one encased in the rough
ER? whether the RNA is looking to produce protein that resides within the cytosol (then
it will choose a free ribosome) or become inserted into the membrane or an organelle of the
cell (in which case it will use the rough ER)
ER stands for what? endoplasmic reticulum
the smooth ER is used for? - it is hetergenous in function
- it mainsly folds, stores and sorts proteins for when they might be needed in other parts of
the membrane
mitochrondria are like... the energy currency that fuel reactions in neurones
fat, sugar, protein and oxygen are combained within the ___ to make ___ within the
mitochondria within the cristae (folds) to make ATP (adenosine triphosphate)
cytoskeleton - this is the network of fibers that holds a membrane together in the neurone
- it is comprised of microtubles (long strands of the tubulin protein), neurofilament and
microfilament
- These tubes and filaments are what give the neurone its characteristic shape
Microfilaments - Long, thin fibres that function in the movement and support of the cell
- they are braids of thin chains of actin protein polymers (actin is one of the most common
proteins in all cells and are thought to be used changing cell shape. for this reason they are
common in muscles)
- these filaments are constantly assembling and dissasembling
Page 1
, Neurofilaments - Fine thread-like structures that form a matrix in the cytoplasm; they
provide support for the cell membrane and maintain the shape of the neuron.
- these are actually found in all cells and are AKA intermediate fillaments but only in
neurones are they called neurofliaments
- consits of individual subunits which have three long protein molecules that make it
structurally very strong
neurofibrillary tangles spiral-shaped masses formed when neurofibers that compose the
axon become twisted together and stay there even when the neurone that has been stuffed
with them dies.
Nernst equation the equation is in the picture
Cerebrum Area of the brain (upper half above the cerebellum) responsible for all
voluntary activities of the body (senses)
Cerebellum A large structure of the hindbrain that controls fine motor skills. (most of
the functions are like balance and reflexes etc that require no conscious thought)
- a mnemonic could be that i has "Bellum" at the end meaning "war" and it controls lots of
the functions you would need to go to war
medulla oblongata Part of the brainstem that controls vital life-sustaining functions such
as heartbeat, breathing, blood pressure, and digestion.
- it is located in the brain stem above the spina cord, it is where snipers aim if they have a
clear shot because it is the most fatal area
Emil Du Bois-Reymond (1818-1896) Is considered the father of electrophysiology. Like
Helmholtz he measured the speed of the nerve impulse. He also discovered the electrical
nature of the action potential.
- discovered that the brain itself is capable of generating electricity
Charles Bell and Francois Magendie discovered through the use of exprimental animals
that nerves were bundled together in the main body but when they reached the spinal cord
they were anatomically seperated into the ventral roots and dorsal roots.
ventral roots bundle of motor neuron axons that exit the spinal cord
Dorsal roots Contain sensory (afferent) fibers from sensory neurons in dorsal root
ganglia and conduct impulses from peripheral receptors that go into the spinal cord.
norepinephrine beta receptor - The binding of amine neurotransmitter *norepinephrine
(NE)* to the beta receptor triggers a cascade of biochemical events within the cell.
- The beta receptor activates a G-protein that, in turn, activates an effector protein, the
intracellular enzyme adenylyl cyclase
- adenlyl cylase catalises oxidative metabolism in the mitochondria into a compound called
cyclic adeonosine monophosphate (or cAMP)
- the cAMP ( a second messanger) stimulates another enzyme called kinaze which catalyzes
the chemical reaction of phosphorrylation (the transfer of phosphate groups from ATP to
specific sites on cell proteins)
- the significance of this is that it can change the activity of a protein
Gustaev Fritsch & Eduard Hitzig experimented on a dog and found that applying
currents to certain circucised parts of a dogs brain could produce movements
- David Ferrier found that removing the same parts of the cerebrum caused muscle paralysis
Page 2
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