How Neurons Are Unique

Question 1

Neurons have protein pores that can open and close in response to a _

Answer 1

Predetermined signal

Question 2

Chemical composition of _ diffeeent than _

Answer 2

Fluid inside cell

Outside cell (extracellular fluid)

Question 3

Compared to extracellular fluid, cytosol has fewer _ charges and more _ charges

Answer 3

Positive

Negative

Question 4

Inside the cell is slightly _ compared to outside of cell

Answer 4

Negative

Question 5

Electrical charge across membrane is called the _

Answer 5

Membrane potential

Question 6

Most cells membrane potential is _ millivolts

Answer 6

Minus 70

Question 7

Neurons alter _ to generate nerve impulse

Answer 7

Electrical charge across their membrane

Question 8

Neurons are able to alter electrical charges across their membrane due to _

Answer 8

Protein pores

Question 9

Gated protein pores allow electrically charged ions: sodium, potassium, _ and _ to cross altering neuron’s membrane potential

Answer 9

Calcium

Chloride

Question 10

Gated channels either respond to _ or to a change in voltage

Answer 10

Chemical messengers