Advertisements
Advertisements
Question
Describe the human alimentary canal.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Name the substances on which the following enzymes act in the human digestive system:
(i) Trypsin
(ii) Amylase
(iii) Pepsin
(iv) Lipase
Where does digestion of fat take place in our body?
Gastric juice contains
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
What are the main characteristics of enzyme?
Put a tick (✓) against the most appropriate alternative in the following statement.
The hardest substance in your body?
Fill in the blank.
The human teeth appear in two sets, the first set is called primary which consists of only _______ teeth
Name the types of teeth in human with functions.
What is the length of the alimentary canal?
______ is the vestigeal organ in human.
