The lining of intestinal wall from outside to inside is made
up of
(a) circular muscles → longitudinal muscles + mucosa
+ submucosa
(b) longitudinal muscles — circular muscles +submucosa
→ mucosa
(c) mucosa submucosa → circular muscles →
longitudinal muscles
(d) submucosa → longitudinal muscles — circular muscles
→ Mucosa.
Answers
Answer:
serosea
The lining of intestine for outise to inside is made up of outermost serosea, muscularis consisting of outer longitudinal and inner circular muscle fiberes, submucosa and innermost mucosa
Explanation:
Answer: (B)
Longitudinal muscle → circular muscle→ submucosa→ mucosa
Explanation: The GI tract is made up of four layers. These are from outside to inside: serosa,muscularis ( outer longitudinal and inner circular muscle fibres), submucosa and mucosa.
Each of these layers has different functions. The Mucosa is the innermost layer and its function is absorption and secretion; it is made up of epithelium cells and thin connective tissue. Mucosa contains Goblet cells that secrete mucus through the GI tract. The submucosa is a dense irregular layer of connective tissue with large blood vessels, lymphatics and nerves that supports mucosa. The submucosa also has glands and nerve plexus. The submucosa is made up of fibrous connective tissue. The muscularis has two layers: the inner layer is circular and the outer layer is longitudinal. The inner layer is used for peristalsis to move food in the gut and the outer layer for loose connective tissue contains blood vessels, nerves and lymphatics. The outermost layer is the smooth membrane is made up of a thin layer of cells that secrete serous fluid