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प्रश्न
Describe the human alimentary canal.
उत्तर
Human alimentary canal consists of:
- Mouth - It is the first organ in the sequence which helps in sucking, chewing, salivation and swallowing. The food is ingested through mouth,
- Pharynx - It is situated behind the soft palate and leads into oesophagus. It is divided into three parts - nasopharynx, oropharyx and laryngopharynx.
- Oesophagus - It lies upto the middle of the thorax, behind the trachea and the heart. It pushes the food down into the stomach by peristaltic movements,
- Stomach - It is the widest organ ofthe alimentary canal. It is J - shaped and is divided into three parts: cardiac, body and pyloric.
- Intestine - It is of two types: small intestine and large intestine. Small intestine is the longest part of the alimentary canal and comprises of three regions - duodenum, jejunum and ileum. It helps in the absorption of food, Large intestine is divisible into three parts - caecum, colon and rectum. It absorbs water from the food.
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संबंधित प्रश्न
Water from the undigested food is absorbed mainly in the ______.
Which part of the digestive canal is involved in:
Formation of faeces ______.
Consider the following two statements A and B and select the right option from (i)-(iv) about their correctness.
- Small intestine is shorter than large intestine.
- Small intestine is wider than large intestine.
Options :
(i)Both the statements are correct
(ii) Both the statements are wrong
(iii) Statement A is correct, B is wrong
(iv) Statement B is correct, A is wrong
Draw a labelled diagram to show the internal structure of a mammalian tooth with two roots.
Write the function of the following in the human alimentary canal:
Villi
Given alongside is the diagram of the human alimentary canal.
(i) Name the parts 1-11 indicated by guidelines.
1.____ 2.____ 3.____ 4.____ 5.____ 6.____ 7.____ 8.____ 9.____ 10.___ 11.____
(ii) State the function of the juice secreted by the part 1.
(iii) State the function of the three enzymes found in the juice secreted by part 3.
Answer in detail.
Liver does not secrete any enzymes yet it helps indigestion. How?
How do we know that we are hungry and that we should now eat?
Secretions of ____________ lubricate the lumen of the alimentary canal.
Select the correct pair of peptide hormones secreted by the alimentary canal.
