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Acetylcholine receptor is present on the sarcolemma of the muscle cells. This receptor is responsible for transmitting the signal to initiate muscle contraction when acetylcholine binds to it at the neuromuscular junction.
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What is a molecule such as a neurotransmitter or a hormone that binds to a receptor called?
A molecule such as a neurotransmitter or hormone that binds to a receptor is called a ligand. This binding triggers a biological response in the target cell, influencing its function.
Neurotransmitters are released in a synapse and bind to?
a receptor structure in a ligand-gated sodium-ion pore. The receptor is like a cave which is an outer part of a protein structure which also has a tunnel which can be open or closed, and the presence of the neurotransmitter causes the tunnel (pore) to open.
Neurotransmitters find their way to and subsequently trigger firing of that neuron?
Excitatory neurotransmitter
What is the difference between endomysium and sarcolemma?
The endomysium is a connective tissue sheath that surrounds individual muscle fibers, providing support and elasticity. The sarcolemma, on the other hand, is the cell membrane of a muscle fiber, responsible for controlling the movement of substances in and out of the cell.
Which substances are found on cell surfaces and respond to nerve and hormone signals?
Receptors, such as neurotransmitter receptors and hormone receptors, are found on cell surfaces. These receptors bind to specific signaling molecules like neurotransmitters and hormones, allowing cells to respond to these signals and initiate a biological response.
What happens when acetycholine binds to its receptor in the sarcolemma and triggers?
When acetylcholine binds to its receptor in the sarcolemma of a muscle cell, it triggers an action potential to be generated along the muscle cell membrane. This action potential then spreads along the sarcolemma and eventually leads to muscle contraction by initiating the release of calcium ions from the sarcoplasmic reticulum.
What is the advantage of having multiple receptor subtypes for a neurotransmitter?
Having multiple receptor subtypes for a neurotransmitter allows for more specific signaling and regulation of cellular processes. It enables fine-tuning of neuronal communication and can lead to diversity in physiological responses to the neurotransmitter.
Which structure is like a locked door that only certain neurotransmitter key can unlock?
Since only 1 neurotransmitter fits in the receptor sites, you can say that the receptor sites is the locked door waiting for the neurotransmitter "keys".
Which neurotransmitter inhibits pain transmission?
SEROTONIN is a neurotransmitter that inhibits pain by blocking pain causing chemicals out of their receptor sites
What is a molecule such as a neurotransmitter or a hormone that binds to a receptor called?
A molecule such as a neurotransmitter or hormone that binds to a receptor is called a ligand. This binding triggers a biological response in the target cell, influencing its function.
What adrenergic neurotransmitter receptor plays a role in heart activity?
beta neuron
A good analogy for the way in which a neurotransmitter binds to receptor sites is?
a key fitting in the lock of a door
What are holes in the surface of the dendrites or certain cells of the muscles and glands that are shaped to fit only certain neurotransmitters?
Neurotransmitter receptor sites on ligand-gated ion pores.
What determines whether a neurotransmitter will have an inhibitory excitatory effect?
How a neurotransmitter interacts with the receptors determines its effects. They activate receptors to perform specific functions in the body.the type of receptor
The same receptor can have different effects depending on the properties of the?
ligand that binds to it. For example, a receptor can trigger different signaling pathways or cellular responses if it binds to different ligands, even if they bind to the same binding site on the receptor. This is known as ligand-dependent receptor activation.
What mimic or enhance the effects of a neurotransmitter on the receptor sites of the next cell increasing or decreasing the activity of that cell?
Agonists mimic or enhance the effects of neurotransmitters by binding to the receptor sites of the next cell and increasing the activity of that cell. Antagonists, on the other hand, block or inhibit the effects of neurotransmitters, resulting in decreased activity of the cell.
What type receptor is present in the cardiac wall and responds to stimulation by the vagus nerve?
Muscarinic Receptor
