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: Ovaries - The ovaries are the female reproductive organs where oogenesis occurs, but they are not the process itself.
b. Oogenesis: Oogenesis is the process by which female gametes (egg cells) are produced through meiosis in the ovaries.
c: Ovulation - Ovulation is the release of a mature egg from the ovary, not the process of egg cell formation.
d: Oocytes - Oocytes are immature egg cells found within the ovaries; they undergo oogenesis to mature into eggs.
Correct Answer is C
Explanation
a. Neutral feedback: This term is not typically used in the context of endocrine regulation.
b. Stimulating feedback: This is not a standard term in endocrine homeostasis mechanisms.
c. Negative feedback: Correct. Negative feedback is the primary mechanism by which endocrine systems maintain homeostasis. It involves reducing the output or activity of any organ or system back to its normal range of functioning.
d. Positive feedback: Positive feedback amplifies changes rather than stabilizing them, and is less common in maintaining homeostasis
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