Every neuron has which of the following components?Multiple ChoiceA cell bodyMany axonsA neurilemmaMyelin
Question
Every neuron has which of the following components?Multiple ChoiceA cell bodyMany axonsA neurilemmaMyelin
Solution 1
Every neuron has the following components:
A. A cell body - This is correct. The cell body, or soma, is the part of the neuron that contains the nucleus. It is the 'control center' of the neuron.
B. Many axons - This is incorrect. Each neuron has only one axon, which is a long, slender projection that conducts electrical impulses away from the neuron's cell body.
C. A neurilemma - This is correct. The neurilemma, also known as the neurolemma, is the outermost layer of the nerve fiber in the peripheral nervous system. It aids in the regeneration of damaged fibers.
D. Myelin - This is correct. Myelin is a fatty substance that surrounds the axon of some nerve cells, providing insulation and increasing the speed at which electrical impulses are transmitted.
So, the correct answer is A, C, and D.
Solution 2
Every neuron has the following components:
A. A cell body - This is correct. The cell body, or soma, is the part of the neuron that contains the nucleus. It is the 'control center' of the neuron.
B. Many axons - This is incorrect. Each neuron has only one axon, which is a long, slender projection that conducts electrical impulses away from the neuron's cell body.
C. A neurilemma - This is incorrect. Not all neurons have a neurilemma. The neurilemma, also known as the sheath of Schwann, is a layer of cells that insulates many neurons. It is found primarily in peripheral neurons, not central neurons.
D. Myelin - This is incorrect. Not all neurons are myelinated. Myelin is a fatty substance that insulates the axons of many neurons, allowing for faster transmission of electrical signals. However, some neurons do not have a myelin sheath.
So, the correct answer is A. A cell body.
Solution 3
Every neuron has the following components:
A. A cell body - This is correct. The cell body, or soma, is the part of the neuron that contains the nucleus. It is the 'control center' of the neuron.
B. Many axons - This is incorrect. Each neuron has one axon, which is a long, slender projection that conducts electrical impulses away from the neuron's cell body.
C. A neurilemma - This is incorrect. Not all neurons have a neurilemma. The neurilemma, also known as the sheath of Schwann, is a layer of cells that insulates many neurons. However, it is not present in all neurons.
D. Myelin - This is incorrect. Not all neurons are myelinated. Myelin is a fatty substance that insulates the axons of many neurons, allowing for faster transmission of electrical impulses. However, not all neurons have a myelin sheath.
So, the correct answer is A. A cell body.
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