HARD
NEET
IMPORTANT
Earn 100
A list of events occurring in the transmission of nerve impulse across the synapse is given below in a random order.
(i) Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post-synaptic neuron.
(ii) Neurotransmitter binds to the receptor on post synaptic membrane.
(iii) Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter release into synaptic cleft.
(iv) Depolarisation of pre-synaptic membrane.
(v) Arrival of action potential at axon terminal.
Which of the following options represents these events in a correct order?
50% studentsanswered this correctly
Important Questions on Neural Control and Coordination
HARD
NEET
IMPORTANT
The given diagram shows axon terminal. Select the option that correctly matches the steps in transmission of impulses (list i - vii) with the labellings (A - C) in diagram.
(i) Chemicals called neurotransmitters are released in the synaptic cleft through ion channels.
(ii) When an impulse arrives at the axon terminal, it stimulates the movement of synaptic vesicles.
(iii) Neurotransmitters are endocytosed into the neurons.
(iv) The ion channels dose with the binding of neurotransmitters to their specific receptors vesicles.
(v) Synaptic vesicles move towards the membrane where they fuse with the plasma membrane.
(vi) Neurotransmitters are released in the synaptic cleft.
(vii) The released transmitters bind to their specific receptors on postsynaptic membrane.
HARD
NEET
IMPORTANT
The given diagram shows the axon terminal and synapse. Here A, B, C, D and E respectively represent
EASY
NEET
IMPORTANT
Which one of the following does not act as a neurotransmitter?
HARD
NEET
IMPORTANT
Read the given statements and select the correct option.
(i) Synaptic cleft of neurons secretes adrenaline.
(ii) Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
(iii) Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath.
(iv) Spinal and cranial nerves are made of non-myelinated nerve fibres.
HARD
NEET
IMPORTANT
Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
EASY
NEET
IMPORTANT
Brain depends on blood for the supply of
MEDIUM
NEET
IMPORTANT
The given figure shows lateral view of the human brain. Identify the parts labelled as A to E and select the correct option.
EASY
NEET
IMPORTANT
The correct sequence of meninges from inner to outer side is
