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After nervous stimulation stops what prevents ACh in the synaptic cleft from continuing to stimulate contraction?
Acetylcholinesterase destroying the ACH
The narrow space between the synaptic terminal and the muscle fiber is the?
synaptic cleft, where neurotransmitters are released by the synaptic terminal and bind to receptors on the muscle fiber to trigger a muscle contraction.
Serves as the actual go signal for muscle contraction?
in anatomy what destroys acetylcholine(I believe that Ans to the 1st Q: would be) calcium ionsremove the inhibition of the troponin molecules which then triggers muscles contraction.(the 2nd Ans would be) acetylcholinesterase distroys Ach in the synaptic cleft after nervous stimulation stops.
Why doesn't acetylcholine remain on the post-synaptic process?
Acetylcholine (ACh) does not remain on the post-synaptic membrane because it is rapidly broken down by the enzyme acetylcholinesterase. This enzymatic degradation occurs in the synaptic cleft, preventing prolonged stimulation of the post-synaptic receptors. Additionally, the reuptake of choline into the pre-synaptic neuron helps recycle components for future neurotransmitter synthesis. This process ensures that synaptic transmission is brief and precisely regulated.
What the function for acetylcholinesterase?
Acetylcholinesterase (AChE) is an enzyme that catalyzes the breakdown of the neurotransmitter acetylcholine into acetate and choline in the synaptic cleft. This process is essential for terminating synaptic transmission, allowing neurons to reset and preventing continuous stimulation of the postsynaptic receptor. By regulating acetylcholine levels, AChE plays a crucial role in muscle contraction, learning, and memory. It is also a target for certain drugs and toxins, which can inhibit its function and disrupt normal neural communication.
Space between synaptic end bulbs of axon terminal and sarcolemma?
The space between the synaptic end bulbs of an axon terminal and the sarcolemma is called the synaptic cleft. It is a small gap that neurotransmitters traverse to transmit signals between neurons and muscle cells. The neurotransmitters released from the axon terminal bind to receptors on the sarcolemma, triggering muscle contraction.
What is the synaptic basis for learning and memory?
Learning and memory involve changes in synaptic strength and connectivity between neurons, known as synaptic plasticity. This may include long-term potentiation (LTP), which strengthens synapses, and long-term depression (LTD), which weakens synapses. These changes in synaptic transmission are thought to underlie the formation and storage of memories in the brain.
When a nerve impulse reaches the end of the axon the tiny sacs that store the neurotransmitters move to the surface and release the neurotranmistters These tiny sacs that store the neurotransmitters?
are called synaptic vesicles. They contain specific neurotransmitters that are released into the synaptic cleft when the nerve impulse reaches the end of the axon. The neurotransmitters then bind to receptors on the neighboring neuron, continuing the signal transmission.
A chemical that destroys acetylcholine a brief period after its release by the axonal endings is?
Acetylcholinesterase is the enzyme that breaks down acetylcholine at the synaptic cleft, terminating its action. This allows for the proper regulation of acetylcholine levels in the synaptic space and prevents continuous stimulation of the postsynaptic neuron.
Describe the components of the neuromuscular junction?
The neuromuscular junction consists of the motor neuron terminal, synaptic cleft, and motor end plate on the muscle fiber. When an action potential reaches the motor neuron terminal, it triggers the release of acetylcholine into the synaptic cleft. Acetylcholine then binds to receptors on the motor end plate, leading to muscle contraction.
The are sack-like structures found inside the synaptic knob containing chemicals?
The sack-like structures inside the synaptic knob containing chemicals are called synaptic vesicles. These vesicles store and release neurotransmitters, which are chemical messengers that transmit signals between neurons. When an action potential reaches the synaptic knob, it triggers the release of neurotransmitters from the synaptic vesicles into the synaptic cleft.
What is the small space separating pre and post-synaptic neurons?
The small space separating pre and post-synaptic neurons is called the synaptic cleft. This cleft allows for the transmission of chemical signals, known as neurotransmitters, from the pre-synaptic neuron to the post-synaptic neuron to occur. The neurotransmitters are released by the pre-synaptic neuron and bind to receptors on the post-synaptic neuron to transmit the signal.
