Peristalsis in the alimentary canal is caused by the: a. contraction of muscle layers b. action of digestive enzymes c. stretching of the mucosa d. closing of the epiglottis

Which type of neuroglia is found outside of the brain?

As a small change in a person's dna can cause a genetic disorder

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.