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Hint: The transmission of nerve impulses from one end to another is due to the electrical changes across the membrane of neurons. The charge difference is due to the concentration of sodium and potassium inside and outside the membrane.
Complete Answer:
Neurons are present in the brain and spinal cord. They have specialised cells which transmit nerve impulses to another neuron as well as muscle or gland cells. The neurons have dendrites which extend from the cell body. They are specialised to receive chemical signals. Axons are the other terminal of neurons. The junction at which the dendrites of one neuron meet the axon of another is known as synapse (as shown in the diagram below)
The nerve impulses are generated at the sensory receptors and are being brought to CNS by the sensory neurons. The nerve impulse is transmitted by the axon of one neuron to the dendrite of another and through dendrite to axon of another neuron through synapse.(Statement A is correct)
These synapses have telodendrites (by the axons) which secrete neurotransmitters which aid in transmitting the impulses to the dendrons. (Statement c and d are correct)
The correct answer is (C).
Note: The neurons are of two types the sensory neurons which are involved in taste, smell, hear, see, feel and the motor neurons which play important role in movement both voluntary and involuntary.
Complete Answer:
Neurons are present in the brain and spinal cord. They have specialised cells which transmit nerve impulses to another neuron as well as muscle or gland cells. The neurons have dendrites which extend from the cell body. They are specialised to receive chemical signals. Axons are the other terminal of neurons. The junction at which the dendrites of one neuron meet the axon of another is known as synapse (as shown in the diagram below)
The nerve impulses are generated at the sensory receptors and are being brought to CNS by the sensory neurons. The nerve impulse is transmitted by the axon of one neuron to the dendrite of another and through dendrite to axon of another neuron through synapse.(Statement A is correct)
These synapses have telodendrites (by the axons) which secrete neurotransmitters which aid in transmitting the impulses to the dendrons. (Statement c and d are correct)
The correct answer is (C).
Note: The neurons are of two types the sensory neurons which are involved in taste, smell, hear, see, feel and the motor neurons which play important role in movement both voluntary and involuntary.
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