An unmyelinated segment of axon has a radius of 2 micrometer and a length of 1...
An unmyelinated segment of axon has a radius of 2 micrometer and a length of 1 mm. Calculate the membrane capacitance of this segment, given that the membrane thickness is 7.5 nm and the dielectric constant is 8.48.
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An unmyelinated segment of axon has a radius of 2 micrometer and
a length of 1...
18-5 An unmyelinated segment of axon has a radius of 2 um and a length of...
18-5 An unmyelinated segment of axon has a radius of 2 um and a length of 1 cm. Find its (a) membrane capacitance; (b) membrane leakage resistance.
The resistor-capacitor network model we developed in Lecture (see figure below where it is shown only...
The resistor-capacitor network model we developed in Lecture
(see figure below where it is shown only for the myelinated case)
for the transmission of signals in nerve axons can actually be
applied to both unmyelinated and myelinated nerve cells to estimate
the propagation speed of a nerve impulse. In the unmyelinated case
the 6-7 nm thick plasma membrane (the lipid bilayer) acts both as a
(very thin) dielectric layer forming a capacitor between the inside
of the axon and the...
Question 1 1 pts Using the data provided in the table below for an "average" axon,...
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44MS2 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment of length 0.73 mm. Typical values for a neuron under average conditions Axon radius (r) 5x10m Membrane thickness (1) 1x10 m Axoplasm resistivity (pa)...
Question 1 1 pts Using the data provided in the table below for an "average" axon,...
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44MN = 44 X 10612 and 60pF = 60 x 10-12 F, respectively, for a membrane segment of length 0.73 mm. Typical values for a neuron under average conditions Axon radius (1) 5x10m Membrane thickness (1) 1x10-6 m Axoplasm resistivity (pa)...
1. The headlights on an automobile are 125 cm apart. At what distance will the lights appear to b...
1. The headlights on an automobile are 125 cm apart. At what distance will the lights appear to be just resolvable to a person whose nocturnal pupils are 4.5 mm in 2. Assume the range of pupil variation during adaptation of a normal eye is from 2.0 to 7.1 mm. What is the corresponding range of distances over which it can detect 3. Two stars make an angle of 1 x 10-3 radians at the eye of an observer. A...
Question 3 1 pts Many nerves, for example, motor neurons used in muscle contraction, are wrapped...
Question 3 1 pts Many nerves, for example, motor neurons used in muscle contraction, are wrapped in myelin, a sheath of repeated units of lipid bilayers and proteins. The effect of myelin is to reduce the amount of ions leaking out the membrane, which therefore reduces the degree of amplification of a signal required during de- and repolarization, and, hence, increases the voltage signal speed. With regard to our model circuit, a myelinated axon simply can be represented by an...
The long thin cylindrical axon of a nerve carries nerve impulses. The axon can be as...
The long thin cylindrical axon of a nerve carries nerve impulses. The axon can be as long as 1 m. A) Estimate the capacitance of a 1.0-m-long axon of radius 3.9 ×10−6 m with a membrane thickness of 7.6 ×10−9 m. The dielectric constant of the membrane material is about 6.0. the answer is not 2.8534x10^-8 F B)Determine the magnitude of the charge on the inside (negative) and outside (positive) of the membrane wall if there is a 0.065-V potential...
The membrane of the axon of a nerve cell is a thin cylindrical shell of radius...
The membrane of
the axon of a nerve cell is a thin cylindrical shell of radius r-
10 m, length L 0.48 m, and thickness d 108 m. The membrane has a
positive charge on one side and a negative charge on the other, and
acts as a parallel plate capacitor of area A 2arL and separation d.
Its dielectric constant is about 7.
Tipler6 24,P.067. 1 2 3 The membrane of the axon of a nerve cell is a...
An axon is a long, slender projection of a nerve cell, or neuron e , that...
An axon is a long, slender projection of a nerve cell, or neuron e , that typically conducts electrical impulses e away from the neuron's cell body e . Capacitance (C) is the ability of a system to store an electric charge. In this activity, you'll use information given about these fascinating structures to calculate the capacitance of an axon. Αxon Axon terminal Dendrite Node of Ranvier Soma Axon Schwann cell Myelin sheath Nucleus plasma membrane cytoplasm, a conducting liquid...
The long thin cylindrical axon of a nerve carries nerve impulses. The axon can be as...
The long thin cylindrical axon of a nerve carries nerve impulses. The axon can be as long as 1 m. A) Estimate the capacitance of a 1.0-m-long axon of radius 3.9 ×10−6 m with a membrane thickness of 7.6 ×10−9 m. The dielectric constant of the membrane material is about 6.0. B)Determine the magnitude of the charge on the inside (negative) and outside (positive) of the membrane wall if there is a 0.065-V potential difference across the wall. C)Determine the...
18-5 An unmyelinated segment of axon has a radius of 2 um and a length of 1 cm. Find its (a) membrane capacitance; (b) membrane leakage resistance.
The resistor-capacitor network model we developed in Lecture
(see figure below where it is shown only for the myelinated case)
for the transmission of signals in nerve axons can actually be
applied to both unmyelinated and myelinated nerve cells to estimate
the propagation speed of a nerve impulse. In the unmyelinated case
the 6-7 nm thick plasma membrane (the lipid bilayer) acts both as a
(very thin) dielectric layer forming a capacitor between the inside
of the axon and the...
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44MS2 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment of length 0.73 mm. Typical values for a neuron under average conditions Axon radius (r) 5x10m Membrane thickness (1) 1x10 m Axoplasm resistivity (pa)...
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44MN = 44 X 10612 and 60pF = 60 x 10-12 F, respectively, for a membrane segment of length 0.73 mm. Typical values for a neuron under average conditions Axon radius (1) 5x10m Membrane thickness (1) 1x10-6 m Axoplasm resistivity (pa)...
1. The headlights on an automobile are 125 cm apart. At what distance will the lights appear to be just resolvable to a person whose nocturnal pupils are 4.5 mm in 2. Assume the range of pupil variation during adaptation of a normal eye is from 2.0 to 7.1 mm. What is the corresponding range of distances over which it can detect 3. Two stars make an angle of 1 x 10-3 radians at the eye of an observer. A...
Question 3 1 pts Many nerves, for example, motor neurons used in muscle contraction, are wrapped in myelin, a sheath of repeated units of lipid bilayers and proteins. The effect of myelin is to reduce the amount of ions leaking out the membrane, which therefore reduces the degree of amplification of a signal required during de- and repolarization, and, hence, increases the voltage signal speed. With regard to our model circuit, a myelinated axon simply can be represented by an...
The membrane of
the axon of a nerve cell is a thin cylindrical shell of radius r-
10 m, length L 0.48 m, and thickness d 108 m. The membrane has a
positive charge on one side and a negative charge on the other, and
acts as a parallel plate capacitor of area A 2arL and separation d.
Its dielectric constant is about 7.
Tipler6 24,P.067. 1 2 3 The membrane of the axon of a nerve cell is a...
An axon is a long, slender projection of a nerve cell, or neuron e , that typically conducts electrical impulses e away from the neuron's cell body e . Capacitance (C) is the ability of a system to store an electric charge. In this activity, you'll use information given about these fascinating structures to calculate the capacitance of an axon. Αxon Axon terminal Dendrite Node of Ranvier Soma Axon Schwann cell Myelin sheath Nucleus plasma membrane cytoplasm, a conducting liquid...
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