2- I knew what the sodium potassium pump was and I knew the parts of a nerve.

1- I thought that the average speed for the nerve impulse being 1 meter per second was interesting. 1 meter per second is really fast and the fact that it can go even faster shows how cool the human body is.

2 things I knew: 1. I knew that some neurons had myelin sheaths and nodes. 2. I knew that sodium potassium pumps push sodium ions out of a cell and potassium ions in.

1 Interesting fact: I found the concept of Saltatory conduction very interesting. This was interesting because the speed of the nerve impulse grew astronomically when this conduction was formed by the jumping between nodes.

1. Sodium and Potassium are able to pass through the membrane on their own through voltage-gated channels

2. The Myelin Sheath insulates, causing signals to travel 100x faster

3. Neurons are relatively negative whenever they are resting

2 Things I already New

1. Sodium Potassium pumps pump sodium out and potassium in

2. The sodium potassium pump is responsible for regulating the membrane potential in a cell

1 Interesting Thing

1. Neurons transmit signals throughout themselves through self-propagation, which is where one event causes a chain reaction within the neuron. This all links back to the sodium potassium pump, and helps us to see how that pump is truly useful to us.

• What exactly a nerve impulse is

• Nerve impulses move along and between two cells.

• What membrane potential was and how it was affected.

  2 Things I already knew:

• Somewhat of what a Potassium Pump is, and the charges of potassium and sodium.

  1 Interesting thing:

• The potassium pump always ensures that the charges are correct inside the membrane potential.

• Learned about depolarisation and repolarization.

• Learned the steps in which these two processes take place

• When in resting potential, the sodium ions outside of the cell are positive. The potassium cells on the inside are negative.

2 things I already knew:

• I already knew about the sodium pump.

• I had the general idea of nerve impulses and how they pass between two cells.

1 Interesting fact:

• I really appreciate that I got to learn more about the nerve impulses, as that is a subject I only briefly had the chance to look over.

1. Depolarisation

2. Membrane potential

3. Repolarisation

2 Already knew:

1. Na/K pump is active transport

2. The parts of a neuron

1 Interesting:

1. Self-propagating. This is interesting because it can be sped up in different ways and it is only one-way.

I already had a good understanding of a sodium potassium pump. As well as cell signaling.

Something I found interesting is the process of depolarization and repolarization.

1. they send voltages to each other

2. membrane potential, what it does.

3. what self propagating is, what it does.

2-

1. a little about neurons and impulses

2. neurons speak to each other

1- learning about myelinated neurons because i've never heard of them before

-I learned that the sodium potassium pump rests at -70MV

• I learned what voltage meant

• I learned what myelination is and what it does

2=

• I knew what the Axon was

• I knew that K+ goes inside and Na+ goes on the outside

3= im suprised to learned how complex the sodium potassium pump really is

-the relative voltage of the inside of a resting nerve is -70mV

-Membrane potential is the voltage of the imbalance of charges on either side of the membrane

-cells can be at rest

2 things I knew:

-Sodium potassium pumps pump sodium out and potassium in

-the parts of a neuron

1 thing I found interesting:

Saltatory conduction

• I learned that the membrane potential is a voltage that is created by an imbalance of charges/ions on either side of the membrane

• I learned that Depolarization is the membrane potential going from negative to positive

• I learned that Repolarization is the membrane potential going from positive to negative (back to resting)

2 Things I already Know

• I knew that the sodium-potassium pump transports sodium outside and potassium inside the cell

• I knew that a neuron impulse is an electrical signal

1 Interesting

• I found it interesting that this ties back to the sodium-potassium pump