The repeated contraction and relaxation of the smooth muscle in the intestinal wall creating a backand-

forth movement is called
a. peristalsis.
b. regurgitation.
c. segmentation.
d. motility.
e. emulsification.


C

Biology & Microbiology

You might also like to view...

Solar aquatic systems constructed by biologist John

Todd work with all of the following EXCEPT a. decomposers that degrade waste. b. plants that grow on nutrients released. c. heat from sunlight that speeds degradation. d. an artificial marsh used to filter algae. e. aquatic fish and birds used to finish the process.

Biology & Microbiology

If a parent cell undergoing mitosis has 18 chromosomes, each daughter cell will have _____ chromosomes

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is a characteristic seen in prophase I that does NOT occur in prophase II?

A) Chromosomes move to the middle of the cell. B) Spindle formation occurs. C) The number of chromosomes doubles. D) Crossing over occurs.

Biology & Microbiology

A secondary plant compound might be used for which of the following?

a) a new crop variety b) a new drug c) a soil nutrient d) a crop pest

Biology & Microbiology