Question

question 19 (2.5 points) the digestive action of the stomach begins when it is stimulated by the
a) liver
b) gallbladder
c) esophagus
d) nervous system
question 20 (2.5 points) where does oxygen release the energy stored in nutrients to provide heat and energy for body functioning?

Explanation:

For Question 19, the nervous system stimulates the stomach to initiate digestive action. The liver, gallbladder, and esophagus are not responsible for directly stimulating the stomach's digestive action.
For Question 20, oxygen releases the energy stored in nutrients in cells throughout the body via cellular respiration to provide heat and energy for body - functioning. Lymph surrounding tissues and alveoli in the lungs are not the sites where this energy - release occurs.

Answer:

Question 19: d) nervous system
Question 20: Cells throughout the body