Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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please answer D through K

Myelinated
Sodium
Unmyelinated
Node of Ranvier
Potassium
proteins
Saltatory conduction
Action potential
Summation
Threshold
Leak channels
A) Bare area of a myelinated axon
B) Can propagate without changing its magnitude
C) Type of axon that lacks myelin sheath
D) The concentration of this ion and negatively charged proteins is much greater
inside the cell than outside
E) The concentration of this ion is much greater outside the cell than inside
F) Action potentials are conducted from one node of Ranvier to another
G) An action potential occurs when a graded potential reaches this level
H) Type of axon that is surrounded by extensions from oligodendrocytes or
Schwann cells that wrap repeatedly around a segment of the axon
I) Large, negatively charged, do not cross the plasma membrane
J) Occurs when the effects of one graded potential are added onto the effects
produced by another graded potential
K) These channels are always open
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Transcribed Image Text:Myelinated Sodium Unmyelinated Node of Ranvier Potassium proteins Saltatory conduction Action potential Summation Threshold Leak channels A) Bare area of a myelinated axon B) Can propagate without changing its magnitude C) Type of axon that lacks myelin sheath D) The concentration of this ion and negatively charged proteins is much greater inside the cell than outside E) The concentration of this ion is much greater outside the cell than inside F) Action potentials are conducted from one node of Ranvier to another G) An action potential occurs when a graded potential reaches this level H) Type of axon that is surrounded by extensions from oligodendrocytes or Schwann cells that wrap repeatedly around a segment of the axon I) Large, negatively charged, do not cross the plasma membrane J) Occurs when the effects of one graded potential are added onto the effects produced by another graded potential K) These channels are always open
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Step 1 Introduction on few terms:

The Neuron's membrane consists of sodium to be present in large quantity in the extracellular part and potassium and other negative charged proteins in the interior of the neuron cell membrane. The myelinated sheath is an extension of oligodendrocyte and Ranvier's Node are the area for sodium gated channels for saltatory conduction to operate in the myelinated axon. When a particular threshold is reached, then only the action potential is generated. The potassium channels are always open, also known as leak channels are simply non gated channels, that leads to the hyperpolarization effect in the neurons. 

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