0
No. For example, the amino acid derivative gamma aminobutyric acid has an inhibitory effect on neurons.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is a product of living cells that circulates in blood and produces a specific stimulatory?
hormone
What does an axon release when an impulse reaches the end of it?
Neurotransmitters to the synapse and the neurotransmitters bind with the receptors releasing the second messengers.
What cells remove neurotransmitters from receptor sites?
Cells known as astrocytes can remove neurotransmitters from the receptor area.
Where are neurotransmitters released?
Dendrites
What are direct acting neurotransmitters?
mitochondrion
Do neurotransmitters always cause hyperpolarization of the postsynaptic membrane?
No, many neurotransmitters cause the postsynaptic membrane to be depolarized.
How do stimulatory neurotransmitters affect the membrane potential of the postsynaptic membrane?
This really depends on the postsynaptic cell and the NT in question. Assuming you are talking about neuro-muscular interactions, the membrane potential moves from a more negative state to a more positive state.
Is acetylcholine stimulatory to cardiac muscle?
False
What is a stimulatory phalloid organ?
A stimulatory phalloid organ is basically the penis of specific birds. It is made up of connective tissue and is near the anterior of the cloaca.
How does caffeine affect the heart?
Well, caffeine (like most pyschoactive drugs) exerts its effect on us by altering the activity of some of our neurotransmitters. Neurotransmitters are the nervous system's way of conveying messages between neurons, and also to muscle tissue. Some neurotransmitters that caffeine is known to increase the activity of are norepinephrine, dopamine, and serotonin. The increase in norepinphrine is likely what causes the heart rate to increase, however each of these neurotransmitters has some stimulatory effects. Norepinephrine, however, is a powerfully stimulating neurotransmitter; it is associated with the 'fight or flight' response, which of course includes an increased heart rate. Caffeine can also cause ectopics (extra beats) in the heart if you have too much
What is presynaptic inhibition?
Inhibition of a stimulatory neuron before it synapses, by inhibiting Ca2+ entry and blocking downstream processes, preventing neurotransmitter release, and therefore preventing the neuron generating and EPSP post-synaptically.
Are Alpha-adrenergic effects usually stimulatory and mediatory?
yes, true
Are Alpha adrenergic effects usually stimulatory and mediatory?
yes, true
What do neurotransmitters open?
Neurotransmitters act on synapses.
What are the symptoms of overdose of substances with stimulatory effects?
Substances with stimulatory effects may dangerously increase the heart rate and blood pressure, increase body temperature, and cause bizarre behavior. With cocaine, there is a risk of stroke.
What is a product of living cells that circulates in blood and produces a specific stimulatory?
hormone
Which structure in the body releases neurotransmitters?
Neurons release neurotransmitters.
