producing mucus

All of the listed responses are correct.

producing wastes

eliminating hormones

transporting nutrients

By the size (amplitude) of individual action potentials.

By the frequency of action potentials in sensory neurons.

By the type of neurotransmitter released.

By the duration of a single action potential.

Na+/K+ ATPase pump moves 3Na+ in for every 2K+ out

Na+/K+ ATPase pump moves 3K+ out for every 2Na+ in

Na+/K+ ATPase pump moves 3Na+ out for every 2K+ in

Na+/K+ ATPase pump moves 3K+ in for every 2Na+ out

4

3

1

2

4

3

1

2

the stationary phase

the nerve impulse

the refractory period

the threshold period

only one impulse is conducted at a time

the size of the action potential does not change

a certain level of stimulus is required to generate an action potential

the membrane becomes repolarised quickly after an action potential passes

2,1,4,3

4,3,2,1

3,2,4,1

1,2,3,4

The variable change in the amplitude of the potential based on the strength of the stimulus

The consistent strength of the membrane potential regardless of the stimulus intensity

The ability of a graded potential to propagate over long distances without diminishing

An enzyme that breaks down neuronal proteins in the synaptic cleft to stop signal transmission

A type of hormone released by endocrine glands that travels through the bloodstream to target organs

A chemical messenger released by neurons that transmits signals to other neurons or cells across a synapse