Physiology of Digestive System

Regulation of the digestive system involves four factors, namely autonomous smooth muscle, intrinsic nerve plexuses, extrinsic nerves, and GI hormones. In autonomous smooth muscle, some cells act as pacemaker cells. What are the names of the cells?

• Chief Cell

• Parietal Cell

• Interstitial Cells of Cajal

• Epithelial Cell

• Mucous Cell

Regulation of the digestive system involves four factors, namely autonomous smooth muscle, intrinsic nerve plexuses, extrinsic nerves, and GI hormones. In autonomous smooth muscle, some cells act as pacemaker cells. What is the function of the cells?

• Generate Slow Wave Potential

• Generate Action Potential

• Generate Contraction

• Generate Relaxation

• Generate Depolarization

The GI tract has three types of sensory receptors that respond to local changes within the lumen of the digestive tract. One of these receptor types is sensitive to stretching or tension resulting from the entry of food into the GI tract. What type of receptor is being referred to?

• Chemoreceptor

• Mechanoreceptor

• Osmoreceptor

• Nociceptor

• Thermoreceptor

Tags

NGSS.HS-LS1-3

Food entering the mouth undergoes mechanical and chemical digestion processes. Mechanical digestion occurs through the chewing process performed by the teeth. Meanwhile, chemical digestion occurs due to enzymes released by the salivary glands. What enzyme is being referred to?

• Pepsinogen

• Trypsinogen

• Lipase

• Amylase

• Maltase

Tags

NGSS.MS-LS1-7

The esophagus is part of the GI tract that transports food from the mouth to the stomach. Anatomically, the esophagus has two types of sphincters. One of the esophageal sphincters prevents gastric contents' reflux into the esophagus. Which sphincter is being referred to?

• Pharyngoesophageal sphincter

• Gastroesophageal sphincter

• Pyloric Sphincter

• Oddi Sphincter

• Ani Sphincter

The stomach is one of the parts of the GI tract where the initial digestion of proteins occurs. Protein digestion occurs because there are cells in the stomach that secrete pepsinogen. What cells are being referred to?

• Chief Cell

• Parietal Cell

• Interstitial Cells of Cajal

• Epithelial Cell

• Mucous Cell

Before working to digest protein, pepsinogen must first be activated into pepsin by HCL. In addition, pepsin works optimally in an acidic environment (pH=2). Therefore, the role of cells that synthesize HCL is crucial for the protein digestion process in the stomach. What cells are being referred to?

• Chief Cell

• Parietal Cell

• Interstitial Cells of Cajal

• Epithelial Cell

• Mucous Cell

The pancreas is a part of the digestive system that synthesizes and secretes various enzymes for the digestion process of chyme that has reached the duodenum. One of the proenzymes secreted by the pancreas plays a role in digesting proteins. What proenzyme is being referred to?

• Pepsinogen

• Trypsinogen

• Lipase

• Amylase

• Maltase

The pancreas is a part of the digestive system that synthesizes and secretes various enzymes for the digestion process of chyme that has reached the duodenum. Additionally, the pancreas also secretes an alkaline fluid that helps neutralize the acid brought by chyme from the stomach. What cells secrete this fluid?

• Acinar Cells

• Duct Cells

• I Cells

• S Cells

• K Cells

During food digestion in the small intestine, it exhibits two types of movements that support this organ's digestive and absorptive functions. One type of movement in the small intestine plays a role in optimizing the food digestion process by facilitating the mixing of food with digestive juices and enhancing the absorption of nutrients by increasing the exposure of nutrients to the surface of the small intestinal mucosa. What movement is being referred to?

• Migration Motility Complex

• Segmentation

• Mass Movement

• Haustral Contraction

• Retropulsion