What is synapse ?

What is a synapse ?

What is a synapse?

What is a synapse ? Explain.

What is a synapse? How is the nerve impulse transmitted across a chemical synapse?

(a) What is a neuron? Draw a labelled diagram of a neuron. (b) What is a synapse? What happens at the synapse between two neurons? How are the messages carried across a synapse? Explain with the help of a labelled diagram.

Which statements are incorrect for mechanism of nerve impulse conduction along electrical junctions of nerous or electrical synapse? i Nerve impulse flow directly from one neuron to other across the synapses in electrical synapses ii. Transmission of an impulse across electrical synapses is very similar to impulse conduction along a single axon iii. Impulse transmission across an elecetrical synapse is always faster than that across a chemical synapse. iv. Electrical synapses are rare in our system v. At an electrical synapse, the membranes of the pre and post-synaptic neurous are separated by a fluid-filled space called synaptic cleft is thick. vi. Chemicals called neurotransmitters are involved in the transmission of impulses at this synapse

Which of the following statements is/are incorrect about the electrical synapse ? (i)At electrical synapses, the membranes of pre and post synaptic neurons are in very close proximity. (ii)Electricity current can flow directly from one neuron into the other across the synapses. (iii)Transmission of an inpulse across electrical synapses is very similar to impulse conduction along single axon. (iv)Electrical synapses pass electrical signal between cells with the use of Ach. (v)Electrical synapses are fast. (vi)Electrical synapses are rare in our system.

Which of the following is a chemical transmitter in synapse of neurons.