Which of the following statements about an action potential is (are) true? Quest

Question

Which of the following statements about an action potential is (are) true?

Question 6 options:

A)

An action potential is an all-or-nothing response

B)

An action potential is the force on molecules to move from areas of high concentration to areas of low concentration

C)

An action potential occurs when there is a change in the charge or potential of the cell from its resting membrane potential (-70 mV) in a more positive direction

D)

A and B only

E)

A and C only

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Question 7 (1 point)

Which of the following statements is true?

Question 7 options:

A)

The soma receive information from thousands of other neurons and are the main source of input of the neuron

B)

Neurons are processes that extend outward from the soma, or cell body, and typically branch several times

C)

The axon of a neuron is covered with an insulating substance called a myelin sheath that allows the signal and communication of one neuron to travel rapidly to another neuron

D)

The axon, which is located within the soma, contains genetic information, directs protein synthesis, and supplies the energy and the resources the neuron needs to function

E)

All of the above are true

F)

A, B and C only are true

Which of the following statements is true about transcranial magnetic stimulation (TMS)?

A)

TMS is a noninvasive method that causes depolarization or hyperpolarization in neurons near the scalp

B)

This method is considered psychophysiological because the independent variable is physiological, rather than the dependent

C)

A coil of wire is placed just above the participant’s scalp and when electricity flows through the coil, it produces a magnetic field

D)

When the magnetic field is rapidly turned on and off, a current is induced in the neurons, leading to depolarization or hyperpolarization, depending on the number of magnetic field pulses

E)

TMS is able to explore neural plasticity, which is the ability of connections between neurons to change

F)

A,C,D,E only

G)

A,B, C only

During development, the nervous tissue emerges from the ______________ (one of the three layers of the mammalian embryo) through the process of _______________.

A)

ectoderm, neural induction

B)

forebrain, rostral caudal migration

C)

neural crest, autonomic preparation

A)

An action potential is an all-or-nothing response

B)

An action potential is the force on molecules to move from areas of high concentration to areas of low concentration

C)

An action potential occurs when there is a change in the charge or potential of the cell from its resting membrane potential (-70 mV) in a more positive direction

D)

A and B only

E)

A and C only

Explanation / Answer

6) the correct option is option (d) A and D are correct option.

7) the correct option is option (f) A, B and C are correct..

15) the correct option is option (a) ectoderm neural induction..

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