How is the circulatory system related to the digestive system in a pig?
a. The brain stem controls the heart rate.
b. Stomach muscles contract and expand.
c. Blood carries nutrients to body cells.
d. The pharynx is a passageway for air and food
How is the circulatory system related to the digestive system in a pig?
a. The brain stem controls the heart rate.
b. Stomach muscles contract and expand.
c. Blood carries nutrients to body cells.
d. The pharynx is a passageway for air and food