Anatomy and Physiology final project 4

how is membrane potential generated?

• 
• 
• 
• Potassium pumped out of the cell

The strength of a graded potential can...

• Always creates a Action potential

• Never creates a Action potential

• Sometimes causes a Action potential

Graded potentials are bi-directional, this means

• they travel along the axon terminal

• they can travel long distances

• they can hyper-polarize and Depolarize

• They are a all or nothing response

what statement best represents Excitatory potential

• depolarization

• repolarization

• Hyperpolarization

• Resting potential

inhibitory potential

• depolarization

• repolarization

• hyperpolarization

• resting potential

What channels need to be open for Depolarization

• Na+ voltage gated channels

• k+ voltage gated channels

• Na+ chemically gated channels

• K+ Chemically gated channels

What Channels need to be open for Repolarization?

• K+ chemically gated channels

• Na+ chemically gated channels

• Na+ voltage gated channels

• K+ Voltage Gated Channels

What are all the channels that are open during graded potential called?

• chemically gated channels and voltage gated channels

• Na/k pump and leak channels

• Na/k pump, leak channels, chemically gated channels

• Voltage gated channels, Na/k pump, leak channels

What is NOT the goal of a graded potential?

• to reach threshold

• to create a a Action potential

• To create Repolarization

• to maintain resting potential

Tags

NGSS.HS-PS2-5

Graded potentials depolarizing causing a action potential in called

• repolarization phase
• hyperpolarization threshold
• threshold potential
• resting potential