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प्रश्न
What is the function of rectum?
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उत्तर
Rectum acts as a temporary storage site for undigested food. It has voluntary smooth muscles that remove the faeces out of the body through the anus.
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संबंधित प्रश्न
Match the items of Column I with suitable items in Column II.
| Column I | Column II | ||
| (a) | Salivary gland | (i) | Bile juice secretion |
| (b) | Stomach | (ii) | Storage of undigested food |
| (c) | Liver | (iii) | Saliva secretion |
| (d) | Rectum | (iv) | Acid release |
| (e) | Small intestine | (v) | Digestion is completed |
| (f) | Large intestine | (vi) | Absorption of water |
| (vii) | Release of faeces |
What is the name of tiny projections on the inner surface of small intestine which help in absorbing the digested food?
What is the function of the liver in the human digestive system?
Name the substance on which the following enzymes act in the human digestive system:
Trypsin
The inner lining of stomach is protected by one of the following from the harmful effect of hydrochloric acid. This is ______.
Which of the following is the correct sequence of parts as they occur in the human alimentary canal?
| The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretion of two glands : liver and pancreas. Liver secretes a greenish-yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has millions of tiny finger-like projections G which help in the rapid absorption of digested food into blood stream. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out though opening J as faeces in the process known as K. |
- Name the organ A.
- Name (i) liquid B, and (ii) organ C.
- What are the digestive enzymes D, E and F?
- Name the projections G present on the inner wall of organ A.
- Name (i) tube H (ii) part I (iii) opening J, and (iv) process K.
Write the function of the following in the human alimentary canal:
Villi
State the four ways in which saliva is useful to us.
Observe the diagram given alongside and answer the following:
- Name the parts numbered 1-8.
- Which parts shown in the diagram are non-living?
- Is the tooth suited for cutting, tearing or grinding?
- What is the function of parts 8 and 7?
- What is the total number of teeth present in adult human beings?
- Write the dental formula of human beings.
Mark odd one in the series:
Correct the spellings: HLC
Name the enzymes secreted by the following: Ileum
Who is telling a lie?
Liver: I am the largest gland in the body.
Bile helps in the digestion of ______.
Identify the correct human dental formula.
Digestion of starch begins in the ______.
List the glands associated with digestion.
Given below from (i) to (iv) are some food items.
- Boiled and mashed potato
- Glucose solution
- A slice of bread
- Mustard oil
Which of the above will give a blue-black colour when tested with iodine?
What is a vermiform appendix?
