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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Observe the diagram. This is the histological structure of the stomach. Identify and comment on the significance of the layer marked by an arrow. - Biology

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प्रश्न

Observe the diagram. This is the histological structure of the stomach. Identify and comment on the significance of the layer marked by an arrow.

टीपा लिहा
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उत्तर

The layer marked in the diagram represents glandular epithelium of mucosa.
Significance of the glandular epithelium of mucosa:
Goblet cells of the epithelial layer of a mucous membrane secrete mucus which lubricates the lumen of the alimentary canal. This helps in movement of food through the gastrointestinal tract.

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पाठ 14: Human Nutrition - Exercise [पृष्ठ १७२]

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बालभारती Biology [English] Standard 11 Maharashtra State Board
पाठ 14 Human Nutrition
Exercise | Q 5 | पृष्ठ १७२

संबंधित प्रश्‍न

What is the function of digestive enzymes?


The gall bladder temporarily stores bile.


The tongue helps in mixing food with saliva. 


Fat is completely digested in the ______.


Label the following figure of the digestive system.

A part of the human digestive system


Carbohydrates are bodybuilding nutrients.


Where is digested food absorbed into blood in human body?


What substances are contained in pancreatic juice? What are their functions?


If the saliva is lacking in salivary amylase, then which of the following processes taking place in the buccal cavity will be affected?

(a) proteins breaking down into amino acids
(b) starch breaking down into sugars
(c) fats breaking down into fatty acids and glycerol
(d) intestinal layer breaking down leading to ulcers


Define the terms 'nutrients'.


Complete the following table by filling in the blanks 1 to 8.

Organ

Enzyme

Food acted upon

Find product

1

Pepsin

2

3

Mouth 4 5 Disaccharide

6

7

Maltose

8


Write the function of the following in the human alimentary canal:

Villi


Write True or False in the following statement

Molars help in cutting and tearing food.


Identify and name the four type of teeth shown below and give their functions


Name the digestive juice secreted by the stomach and give its function.


How is the small intestine best suited for the digestion and absorption of food?


Define the following term:

assimilation


Write true or false for the below statement. Rewrite the false statements correctly

Pancreatic juice does not contain any enzyme.


Name different steps involved in animal nutrition. Explain.


Mark odd one in the series:


Correct the spellings: Pespin


Who is telling a lie?

Appendix: Digestion is impossible without me.


Answer the following question.

Small Intestine is very long and coiled. Even if we jump and run, why it does not get twisted? What can happen if it gets twisted?


Write any two functions of digestive system.


Identify the part of the digestive system which is vestigial in humans?


A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains:



Label the following parts in Figure and name them.

  1. The largest gland in our body.
  2. The organ where protein digestion starts.
  3. The organ that releases digestive juice into the small intestine.
  4. The organ where bile juice gets stored.

Curdling of milk protein is done by ______.


Mucosa forms __a__ in stomach and ___b___ in intestine respectively.


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