Its B. <span>Australopithecus africanus, Homo erectus, Homo neanderthalensis</span>
Answer: b) is waves of muscular contractions that move along the length of the digestive tract.
Explanation:
a) is not right, since the movement is triggered by a signal sent to the brain, which coordinates the movements.
c) is not right, since the esophagus smooth muscle is arranged in circular and longitudinal muscle layers.
NOTE: the peristalsis do not only ocurrs in the esophagus. It also occurs in all the digestive tract, as well as in the bile conducts and also in the urinary system, to conduct the urine from the kidneys to the bladder.
Go word for word from start to finish
Answer:
exocytosis
Explanation:
“exo” means “out” or “outer”, and it appears that the red dots are moving outwards