During which phase in the control of the digestive system would bicarbonate and bile be stimulated? view available hint(s) during which phase in the control of the digestive system would bicarbonate and bile be stimulated?
a. intestinal phase
b. gastric phase
c. cephalic phase

Gastric Phase

Explanation:

Background Knowledge:

For food digestion both the nervous system and endocrine system work in collaboration with each other. Purpose of this collaboration is to increase gastric secretion soon after food is eaten and to reduce secretion  when the stomach empties.

Gastric activity:

Gastric activity related to eating can be divided into three stages called the 1) Cephalic phase: Stomach Digestion is being controlled by the brain

2) Gastric phase: Stomach Digestion is being controlled by itself

3) Intestinal phase: Stomach Digestion is being controlled by the small intestine.

Find information related to three phases in attachment, attached with this answer.

Answer of the question:

About 50 to 60 % of the digestive material including Bicarbonates and biles are secreted by Gastric phase

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1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation: