Which of the following structures allows impulses to be transmitted from one neuron to another neuron?
Cell body
Axon
Synapse
Dendrite
The Correct Answer is B
a. Cell body: The cell body is the main part of the neuron containing the nucleus and other organelles. It does not directly transmit impulses.
b. Axon: The axon is a long fiber that carries electrical impulses away from the cell body towards other neurons or muscles.
c. Synapse: A synapse is a junction between two neurons where nerve impulses are transmitted. The axon of one neuron transmits an electrical signal to the dendrite or cell body of another neuron across a small gap. Neurotransmitters are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron, either exciting or inhibiting it.
d. Dendrite: Dendrites are short, branching fibers that receive signals from other neurons and transmit them towards the cell body.
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Related Questions
Correct Answer is B
Explanation
a. Cricoid cartilage: This is a ring-shaped cartilage located below the thyroid cartilage, but it is not part of the glottis.
b. True vocal cords: The glottis consists of the true vocal cords (vocal folds) and the opening between them. The true vocal cords are essential for sound production.
c. "Adam's apple": This term refers to the prominent part of the thyroid cartilage, particularly in males. It is not part of the glottis.
d. Thyroid cartilage: This is the largest cartilage of the larynx and forms the front wall, but it is not directly part of the glottis.
Correct Answer is B
Explanation
a. Pathogen: A pathogen is a disease-causing organism like bacteria, virus, or parasite. It can trigger an immune response, but not necessarily a hypersensitivity reaction.
b. Allergen: An allergen is a foreign substance (like pollen, dust mites, or food) that can trigger an immune response in an already sensitized individual. This response can lead to allergy symptoms like hay fever or anaphylaxis
c. Immunogen: An immunogen is any substance that can trigger an immune response, but not necessarily a hypersensitivity reaction. It can be a pathogen, allergen, or other foreign substance.
d. Fibrinogen: Fibrinogen is a blood protein involved in blood clotting, not allergic reactions.
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