WEEK 4

Polarized

• Hyperpolarized

• Polarized

• Depolarized  

Sodium potassium pump

• actively moves ions in and out. for every 3 sodium ions (NA+) it pushed out of neurons it takes in 2 potassium ions(K+).

• only open and close depend on the membrace potential

(C)

• EPSP

• Sodium potassium pump

• Voltage-gated Na+ channel has open

(B)

• EPSP

• Sodium potassium pump

• Voltage-gated Na+ channel has open

A

• EPSP

• Sodium potassium pump

• Voltage-gated Na+ channel has open

Myelin sheath

(choose all correct answers)

• Make sure that ions cannot leave on enter (keep ions inside)

• Electrical conductance is fast and decremental like PSPs

• Slow and non- decremental

• is a fatty insulation around axon.

• is a fatty insulation around axon.

Myelin sheath

(choose all correct answers)

• A: Myelin sheath

  B: Node of raniver

• A: Node of raniver

  B: Myelin sheath