In the center of the body of the earthworm lies its digestive system, running from the mouth to the anus. Each section of the worm's digestive tract has different functions, which allows the earthworm to break down and absorb nutrients from the soil for food. Earthworms do not have lungs;...
What are the functions of the different layers in the intestinal wall? Gastrointestinal (GI) Tract: The digestive system is composed of both solid and hollow organs that work together to convert the food ingested into usable energy for the body. The GI tract, also known as the intestinal...
What are the functions of the three subdivisions of the pharynx? What is the mobile organ that manipulates food in the mouth and initiates swallowing? What is the function of the oral cavity? Describe the structure of the parietal pleura. ...
Now that you know the purpose and functions of the digestive system, let’s dive into the process of digestion. Digestion happens in the digestive tract, which is a long, muscular tube that starts at your mouth and ends at your anus. Along the way, several organs help break down the ...
What are the functions of the trachea? The trachea facilitates air movement to the lungs for respiration and is lined with cilia to trap and expel foreign particles. 13 What is the trachea? The trachea, or windpipe, is the main airway that connects the larynx to the lungs, allowing for ai...
What are digestive functions of each and what biological molecules are digested and absorbed in each of the mouth, parotid glands, esophagus, stomach, liver, gall bladder pancreas, small intestines, And large intestines. Solution ### Concepts Digestion...
What Does the Epithelium Do? Since there are several different epithelial cell types, the epithelium performs several different essential functions. Wherever it is, though, the epithelium's main job is to provide protection from the outside world. This could include defense against physical, chemical...
Filiform papillae are small fleshy bumps found on the tongue. Unlike other papillae, they don't contain taste buds, but they...
Esophagus 食管是一个前后压扁的肌性管,位于脊柱前方,上端在第6颈椎下缘平面(环状软骨)与咽相续,下端续于胃的贲门,全长约25厘米。依其行程可分为颈部、胸部和腹部三段。 The esophagus is a muscular tube compressed anterior and posterior, located...
What is the main purpose of stomach? The stomach has 3 main functions:temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. digestion...