Digestion and Absorption II
Study the statements given:
(i) Human dentition is thecodont, diphyodont andheterodont.
(ii) Enamel is produced by ameloblast while dentine is produced byodontoblast.
(iii) Frenulum connects tongue to the buccalcavity.
(iv) The liver is bilobed and weighs 1.2 to 1.5kg.
(v) Pancreas is both exocrine and endocrine
Statement (i) and (iv) are false
Only statement (v) is true
All statements are true.
Statement (iii) is false.
The length of alimentary canal is more in herbivorous animals than the carnivorous animals because
Herbivorous diet contains more proteins to digest.
Herbivorous diet contains more carbohydrates particularly cellulose.
Herbivorous diet contains more fat which takes more time to digest.
Herbivorous diet contains more vitamins to digest.
Read the following statements regarding the digestive system and select the correct statement
Oesophagus passes through neck, thorax and diaphragm and opens into stomach.
Caecum, a small blind sac is a part of large intestine and host symbiotic bacteria
Stomach is located in the upper right portion of the abdominal cavity.
Stomach, a J shaped organ is the longest organ of the alimentary canal
When a mammal swallows, the food is prevented from going up into the nasal cavity by the
Which of the following salivary gland is unpaired
none of them
Partial removal of liver is not harmful because
The function of liver can be taken over by kidneys.
Liver being a large organ can suffice the functions even if part is removed.
Liver has regenerative capacity and will grow after partial hepatectomy.
Liver is not a very essential organ of our body.
Which of the following is correct pairing of site of action and substrate of rennin
The enzyme called universal enzyme which is present in all organisms starting from Protozoans to mammals is
How many of the following statements are true:
(i) The major components of our food are carbohydrates, proteins andvitamins.
(ii) Fats and minerals are also required in smallerquantities.
(iii) Bio-macromolecules in food cannot be utilised by our body in their originalform.
(iv) The process of converting macromolecules into simple absorbable forms is called digestion
Complete the given equation and choose the correct option accordingly
A-Ca2+, B-Peptones, C-Casein
A-Paracasein, B-Ca2+, C-Peptones
A-Casein, B-Ca2+, C-Peptones.
A-Ca2+, B-Paracasein, C-Peptones.
If we take food rich in lime juice, then
Action of ptyalin is unaffected.
Action of ptyalin stops.
Action of ptyalin is enhanced.
Action of ptyalin is reduced.
Which of the following is not involved in the stimulation of release of pancreatic juice
During prolonged starvation, body derives nutrition from storage of
Observe the given diagram and identify the labelled parts
1-Parotid gland, 2-Ileum, 3-Caecum, 4-Jejunum, 5-Duodenum.
1-Parotid gland, 2-Jejunum, 3-Caecum, 4-Ileum, 5-Duodenum.
1-Parotid gland, 2-Jejunum, 3-Ileum, 4-Caecum, 5-Duodenum.
1-Parotid gland, 2-Jejunum, 3-Duodenum, 4-Caecum, 5-Ileum.
What will be the consequence if the portion marked as ‘A’ in the following diagram has been removed
The smallest salivary gland is
Choose the incorrect pair with respect to the composition of the alimentary canal’s layers
Submucosa – Perforated myothelium
Mucosa – Rugae/villi
Muscularis – Smooth muscles (circular and longitudinal)
Serosa – Thin mesothelium
Which one of the following pairs of the kind of cells and their secretions are correctly matched
Oxyntic cells – A secretion of pH 1.8.
Kupffer’s cells – A digestive enzyme that hydrolyses nucleic acids.
Alpha cells of Islets of Langerhans – Secretion that decreases blood sugar level.
Sebaceous glands – A secretion that evaporates for cooling.
Match the following and choose the correct combination from the options given:
A person has decreased secretion of lactaseenzyme.
What would happen if he consumes more milk
He becomes lactose intolerant and digestion of milk would be easier.
The milk is regurgitated as soon as it reaches the stomach.
He becomes lactose tolerant and digestion of milk is difficult.
The milk reaches the intestine and undergoes fermentation by bacteria producing gases and acids.
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