Answer: The Auerbach plexus or myenteric plexus.
Explanation: The muscularis externa is a composed layer of muscles, located throughout the gastrointestinal tract. It has an inner circular muscular layer and a longitudinal external muscular layer. Between the two layers there is a part of the nervous system called Myenteric plexus.
A plexus is like a web of axons (nervous tissue) that provides a specific function. In this case, the myenteric plexus has a main function: motility. All the digestive tract (esophagus, stomach and intestine) possess this structure, to give motility or “peristalsis”, so the food could travel all the way from the esophagus through the colon.
Biotic and abiotic factors make up a community via interaction. Biotic factors are considered living things (having "life") while abiotic factors are simply non-living things. In this case, among the list of components given, the abiotic factors are <span>water, rock, soil, sun</span>
Answer:
the study of all living things
Explanation:
<span>Leather shoes are made from natural polymers; raincoats are made from synthetic polymers. </span>
