What is incorrect regarding saliva in humans?

1. The concentration of electrolytes, potassium and bicarbonate, are higher than in plasma
2. It contains antibacterial compounds like thiocynate lysozyme
3. Lingual lipase has a pH optimum of around 6.8 and is functional in oral cavity
4. Water is the largest constituent of saliva

Subtopic:  Digestive Secretions: Saliva |
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NEET 2025 - Target Batch
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What are broken down in the liver or muscle cells to release fatty acids and glycerol?
1. micelles
2. chylomicrons
3. lipopolysaccharide
4. lipoproteins

Subtopic:  Absorption: Part 2 |
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Small intestine can readily absorb all the following except:
1. Na+
2. Cl-
3. K+
4. Mg++

Subtopic:  Absorption: Part 1 |
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Identify the incorrectly matched pair:
1. caries--tooth decay
2. gingivitis--inflammation of the gums
3. heartburn--stomach acid in the esophagus
4. mumps--viral infection of the sublingual glands

Subtopic:  Disorders of Digestive System |
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A peptide hormone that stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility is:
1. GIP
2. gastrin
3. secretin
4. CCK

Subtopic:  Gastric Secretions |
 68%
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The hormones released from cells in the duodenal epithelium in response to acidic and fatty stimuli present there when the pylorus opens and emits gastric chyme into the duodenum for further digestion, are:
1. secretin and CCK
2. GIP alone
3. secretin alone
4. CCK alone

Subtopic:  Movement of Food in Gut |
 64%
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Secretin will be secreted by the duodenal mucosa due to:
1. sodium bicarbonate in chyme
2. fats in chyme
3. peptones in chyme
4. hydrochloric acid in chyme

Subtopic:  Intestinal Secretions |
 53%
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Chyme enters duodenum through:
1. esophageal sphincter
2. pyloric sphincter
3. anal sphincter
4. ileocecal valve

Subtopic:  Movement of Food in Gut |
 79%
From NCERT
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The secretion of which of the following will carry large amounts of sodium bicarbonate to neutralize the acidity of chyme in the small intestine?
1. pancreas
2. gall bladder
3. jejunum
4. salivary glands

Subtopic:  Pancreatic Secretions |
 59%
From NCERT
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Considered as the beginning of the large intestine, the blind end of the ascending colon is known as:
1. cecum
2. vermiform appendix
3. rectum
4. anal canal

Subtopic:  Peristalsis: Gland in Alimentary Canal |
 57%
From NCERT
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Hints
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NEET 2025 - Target Batch