NEET
- Exam
- NEET
- Subject
- Zoology
- Chapter
- Neural Control and Coordination
NEET · Zoology · Neural Control and Coordination
Order of Sequence Events A. Third 1. Release of neurotransmitters...
| Order of Sequence | Events |
|---|---|
| A. Third | 1. Release of neurotransmitters in the synaptic cleft |
| B. Fourth | 2. Movement of the synaptic vesicles towards the membrane where they fuse with the plasma membrane |
| C. Second | 3. Entry of ions which can generate a new potential in the post-synaptic neuron. |
| D. First | 4. Neurotransmitters bind to their specific receptors, present on the post-synaptic membrane |
Options
- AA -4 , B -3 , C -1 , D - 2
- BA -4 , B -2 , C - 3, D - 1
- CA - 1, B -4 , C - 3, D -2
- DA -3 , B - 2, C -1 , D - 4
Correct answer
A. A -4 , B -3 , C -1 , D - 2
Step-by-step solution
When an impulse (action potential) arrives at the axon terminal, it stimulates the movement of the synaptic vesicles towards the membrane where they fuse with the plasma membrane and release their neurotransmitters in the synaptic cleft. The released neurotransmitters bind to their specific receptors, present on the post-synaptic membrane. This binding opens ion channels allowing the entry of ions which can generate a new potential in the post-synaptic neuron. The new potential developed may be either excitatory or inhibitory.