Biology Forums - Study Force

hi there! just a couple questions here about the nervous system and senses.

1. a nerve impulse is best described as
A the diffusion of molecules along the neutron after the molecules have been released from the dendrites
B a result of a change in osmotic pressure between the inner and outer surfaces of the neural membrane
C an enzymatic reaction that makes the membrane more permeable to potassium ions
D an electrochemical process that occurs along the neural membrane.
i think it’s D but i’m not sure

2. transmission of a nerve impulse depends primarily on the stimulus
A increasing the neurons permeability to potassium ions and thus allowing these ions to enter the neuron
B decreasing the potassium ions and thus allowing these ions to leave the neuron
C increasing the neurons permeability to sodium ions and thus allowing these ions to enter the neuron
D decreasing the sodium ions and thus allowing these ions to leave the neuron

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thank you!!
 :P

 :thumbsup: Anything else, don't be shy to ask

Thankyou