Stomach histology

The video tutorial explores the histology of the stomach, detailing its anatomy, the layers of its walls, and the specialized cells involved in digestion. It covers the gross anatomy of the stomach, including its regions and parts, and delves into the microanatomy of the stomach wall layers. The tutorial also discusses the staining techniques used in histology, the regional differences in stomach histology, and the clinical implications of stomach function, such as gastritis and ulcers.

What is the primary function of the stomach in the digestive process?

• Filtration of blood

• Production of bile

• Mechanical and chemical digestion

• Absorption of nutrients

Which layer of the stomach wall is responsible for peristalsis?

• Muscularis externa

• Serosa

• Submucosa

• Mucosa

What is the role of the serosa in the stomach?

• Secretes digestive enzymes

• Produces a lubricating fluid

• Protects against pathogens

• Absorbs nutrients

Which cells in the gastric mucosa secrete hydrochloric acid?

• Mucous neck cells

• Parietal cells

• Chief cells

• Enteroendocrine cells

What is the function of the gastric pits in the stomach?

• Store bile

• Transport blood

• Secrete mucus and digestive juices

• Absorb nutrients

Which region of the stomach is characterized by a transition from stratified squamous to simple columnar epithelium?

• Corpus

• Pylorus

• Esophagogastric junction

• Fundus

What is the primary function of the pyloric sphincter?

• Prevent reflux

• Absorb nutrients

• Regulate food entry into the duodenum

• Secrete digestive enzymes

What condition is caused by the erosion of the gastric mucosa?

• Crohn's disease

• Celiac disease

• Ulcerative colitis

• Gastritis

Which medication type is used to treat gastritis by reducing stomach acid?

• Proton pump inhibitors

• Analgesics

• Antihistamines

• Antibiotics

What is the role of the myenteric plexus in the stomach?

• Protects against pathogens

• Absorbs nutrients

• Controls stomach movements

• Secretes digestive enzymes