Seeing occurs in the eye.

A single neuron synapsed to many muscle cells allows for precise movements.

Perception occurs in sensory receptors.

After an injury, some of the motor neurons to a muscle are dead.  The surviving motor neurons may form new branches that extend to more muscle cells.  What happened to muscle strength?

What choice best describes why a person with sensory hearing loss in the right ear would not be accurately locate sound?

What reagent tests for the presence of simple sugars such as maltose produced during starch digestion?

Sensory adaptation occurs because tonic receptors fire a high frequency of receptors initially, then decrease the frequency of action potentials over time, even with a constant stimulus.

Electrical shock opens chemically-regulated gates of sodium channels in vivo.

Why does NaCl taste saltier than KCl? 

A golfer who is caught in a thunderstorm is struck by lightening. A fellow golfer, who is a nurse, runs to the victim’s aid. What should the nurse do initially?