Domanda del libro di testo
A drop in pH below 4.5 in the duodenum stimulates the secretion of
(a) Secretin
(b) Cholecystokinin
(c) Gastrin
(d) All of these
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Ch. 24 The Digestive System
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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TOC.tableOfContents
- Ch. 1 An Introduction to Anatomy and Physiology26
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization30
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure36
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses16
- Ch. 18 The Endocrine System20
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation29
- Ch. 22 The Lymphatic System and Immunity31
- Ch. 23 The Respiratory System12
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes32
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance23
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Non è quello che usi tu?Cambia libro di testo
Capitolo 24, Problema 29
Some people with gallstones develop pancreatitis. How could this occur?
Guida verificata passo dopo passo1
Step 1: Understand the anatomy involved. The gallbladder stores bile, which flows through the common bile duct into the duodenum. The pancreas secretes digestive enzymes into the pancreatic duct, which usually joins the common bile duct before entering the duodenum at the ampulla of Vater.
Step 2: Recognize that gallstones can migrate from the gallbladder into the common bile duct, potentially causing a blockage at or near the ampulla of Vater.
Step 3: Explain that if a gallstone blocks the common bile duct or the pancreatic duct, it can prevent pancreatic enzymes from flowing into the duodenum, causing them to back up into the pancreas.
Step 4: Describe how the backup of pancreatic enzymes leads to their premature activation within the pancreas, causing inflammation and damage to pancreatic tissue, which is the basis of pancreatitis.
Step 5: Summarize that gallstone-induced blockage of the ducts can cause pancreatitis by obstructing enzyme flow and triggering pancreatic inflammation.
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Gallstones and Biliary Obstruction
Gallstones are hardened deposits that can block the bile ducts. When a gallstone obstructs the common bile duct or the ampulla of Vater, it can impede the flow of bile and pancreatic secretions, leading to complications.
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Percorso guidato
7:24
Anastomoses Form Collateral Channels
Pancreatitis Pathophysiology
Pancreatitis is inflammation of the pancreas caused by premature activation of digestive enzymes within the pancreas. This leads to autodigestion and tissue damage, often triggered by ductal obstruction or injury.
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4:46Pancreas
Anatomical Relationship Between Bile Duct and Pancreatic Duct
The common bile duct and pancreatic duct join at the ampulla of Vater before emptying into the duodenum. Obstruction at this junction by gallstones can cause pancreatic secretions to back up, triggering pancreatitis.
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5:16Duct System
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