describe the action potential associated with the sinoatrial node.

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Sydney Mullin answered 9 months ago

Describe the sinoatrial node (SA node) membrane potential and action potential. Describe how these would be affected...

Describe the sinoatrial node (SA node) membrane potential and action potential. Describe how these would be affected by: 1) atropine, 2) norepinephrine, and 3) acetylcholine

Draw the action potential that would be occurring at the SA node in humans. Indicate which...

Draw the action potential that would be occurring at the SA node in humans. Indicate which ions are permeable, and direction of movement, during each part of action potential. Which channel is responsible for the unstable membrane potential?

In a conduction cell like an SA node action potential, what role does calcium play?

Describe the steps in a chemical synapse from the arrival of an action potential at the...

Describe the steps in a chemical synapse from the arrival of an action potential at the pre-synaptic membrane to the formation of a graded potential on the post-synaptic membrane. Include as much biological detail as you can.

Describe the ionic basis of an action potential and be sure to include the role of...

Describe the ionic basis of an action potential and be sure to include the role of channels/gates within the cell membrane and how this relates to a positive feedback homeostatic mechanism.

Describe the steps of an action potential and synapse. Include the role of myelin.

Describe the importance of voltage-gated channels in the conduction of an action potential.

1. Describe the chemical and electrical properties of an action potential. In your answer, describe the...

1. Describe the chemical and electrical properties of an action potential. In your answer, describe the movement of Na+ ions and K+ ions across the cell membrane and the resulting changes in electrical potential. 2. Compare and contrast EEG and MEG. Highlight their similarities and differences in your answer.

describe EVERY SINGLE action from the action potential moving down a motor neuron, to the synapse,...

describe EVERY SINGLE action from the action potential moving down a motor neuron, to the synapse, and then all the way to contraction of the skeletal muscle cell.

What are the stages the membrane potential goes through during an action potential? Describe each stage...

What are the stages the membrane potential goes through during an action potential? Describe each stage in terms of the changes in sodium and potassium ions inside the cell. Name and describe the two types of refractory periods, and what, if anything would make a neuron fire during a refractory period.

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