Neuronal Ion Charges Quiz

At rest when there are no ionic exchanges between extracellular and intracellular side of the axon, the net charge extracellularly is ______. Intracellularly, there will be net charge of ______.

• Positive, negative

• Negative, positive

• Neutral, neutral

• Positive, positive

Tags

NGSS.HS-LS1-3

What is the dominant ion on the extracellular side when there is a net charge of positive?

• Na+

• K+

• Cl-

• Hco3-

What is the dominant ion on the intracellular side when there is a net charge of negative?

• Na+

• K+

• Cl-

• Hco3-

What are the different types of synapses mentioned in the text?

• Electrical synapses and chemical synapses

• Axodendritic synapses and axosomatic synapses

• Excitatory synapses and inhibitory synapses

• Presynaptic synapses and postsynaptic synapses

What is the difference between excitation and inhibition in the context of synaptic activity?

• Excitation increases the likelihood of a neuron firing, while inhibition decreases it.

• Excitation decreases the likelihood of a neuron firing, while inhibition increases it.

• Both excitation and inhibition increase the likelihood of a neuron firing.

• Both excitation and inhibition decrease the likelihood of a neuron firing.

What are 1st messengers and provide examples as mentioned in the text?

1. This ion is located in highest concentration outside of the neuron:

• Potassium

• Nitrogen

• Calcium

• Sodium