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Can graded potential form on receptor endings?
Yes, Graded potentials (otherwise known as postsynaptic potentials) can form on receptor endings.
What is the process in which our sensory receptors convert sensory stimuli from our environment into a form that can be sent to and used by the brain?
stem from generation of receptor potentials
What change does ACh cause in an ACh receptor?
ACh binds to each ACH receptor which causes opening of ligand-regulated ion gate and the creation of end-plate potential.
What is an example of a signal molecule that can bind to an intracellular receptor and thereby cause a gene to be turned on or off?
steroid
What is an example of a signal molecule that can bind to an intracelluar receptor and therby cause a gene to be turned on or off?
steroid
Can graded potential form on receptor endings?
Yes, Graded potentials (otherwise known as postsynaptic potentials) can form on receptor endings.
What is a molecule such as a neurotransmitter or a hormone that binds to a receptor called?
what are the characteristics of action potentials
What are sensory receptors?
A sensory receptor is a sensory nerve ending that responds to a stimulus in the internal or external environment of an organism. The sensory receptor initiates sensory transduction by creating graded potentials or action potentials in the same cell or in an adjacent one.
What is the process in which our sensory receptors convert sensory stimuli from our environment into a form that can be sent to and used by the brain?
stem from generation of receptor potentials
Why does injection of a local anesthetic into a finger still cause a loss of the sensation of touch from the finger?
Touch stimulation of this sensory receptor will open the mechanically gated ion channels, but action potentials are still not initiated because propagation of an action potential requires the opening of voltage-gated Na+ channels
Why levodopa can cause postural hypotension?
by di receptor stimulation
Does blocking receptors reduce action potentials?
Yes it reduces the chance of action potenctial to happen. The NMDA receptor is normally block be a Mg molecule. To unblock it the neuron must "fire" (generate action potencial).
What are the various potentials used in antenna theory?
scaler electric potential vector magnetic potentials retarded potentials
Why does electron transfer cause electrostatic effects?
because of the shift in the reduction potentials during electron transfer reaction.
What change does ACh cause in an ACh receptor?
ACh binds to each ACH receptor which causes opening of ligand-regulated ion gate and the creation of end-plate potential.
What potentials are short-lived and decremental?
graded (local) potentials
Are graded potentials the same as local potentials?
Postsynaptic potentials are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. Graded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none, and are not postsynaptic potentials.
