What is the migrating motor complex? (Absite Junior Topic)
What is the migrating motor complex? (Absite Junior Topic)
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Migrating motor complex (gut motility) [absite, p.214]
– Phase I – rest
– Phase II – acceleration and gallbladder contraction
– Phase III – peristalsis
– Phase IV – deceleration
absite review, p.214
Motilin is most important hormone in migrating motor complex [absite, p.214]
From Wikipedia, the free encyclopedia
Migrating motor complexes (or migrating myoelectric complex) are waves of activity that sweep through the intestines in a regular cycle during fasting state.
These motor complexes help trigger peristaltic waves which facilitate transportation of indigestible substances such as bone, fiber and foreign bodies from the stomach, through the small intestine past the ileocecal sphincter into the colon.
The MMC originates in the stomach roughly every 75–90 minutes during the interdigestive phase (between meals) and is responsible for the rumbling experienced when hungry.
It also serves to transport bacteria from the small intestine to the large intestine, and to inhibit the migration of colonic bacteria into the terminal ileum.
The MMC is thought to be partially regulated by motilin which is initiated in the stomach as a response to vagal stimulation, and does not depend on extrinsic nerves directly.
JOURNAL ARTICLE: MMC
States that MMC starts in antrum and duodenum.
Migrating motor complex cycle duration is determined by gastric or duodenal origin of phase III
Since 2006 the ABS has offered the ABSITE as a junior level (PGY-1 and -2) and senior level (PGY-3 to -5) examination. Both the junior- and senior-level versions consist of approximately 225 multiple-choice questions; examinees are given five hours to take the exam. For the junior-level exam, 60% of the examination focuses on basic science, while 40% centers on the management of clinical surgical problems. In the senior-level exam, 20% of the exam focuses on basic science and 80% on clinical management.
STUDY PLAN – leave comments to share your progress
TAR = The Absite Review
SR = The Surgical Review
Schwartz = Schwartz Principles of Surgery
Hematology / Hemostasis / Coagulation [Schwartz] [SR][TAR]
Surgical bleeding [Schwartz]
Transfusion / Blood products [Schwartz] [TAR]
– ABSITE REVIEW: HEMATOLOGY .
– ABSITE Review Questions Hematology .
– ABSITE Review Questions Blood Products and Transfusion Reactions .
Anesthesia / Physiologic monitoring of the surgical patient/ Anesthesia of the surgical patient [Schwartz] [SR][TAR]
– ABSITE Review Questions Anesthesia .
– ABSITE Review Questions Malignant Hyperthermia .
Shock / Surgical critical care [Schwartz][SR][TAR]
Fluids and electrolytes management of the surgical patient / Resuscitation [Schwartz][SR] [TAR]
Trauma [Schwartz] [SR][TAR]
– ABSITE REVIEW: FLUIDS AND ELECTROLYTES
Surgical Infectious Disease/ Surgical Infection / Antibiotics [Schwartz] [SR][TAR]
Inflammation and Cytokines [TAR]
ABSITE Review Questions Infection .
ABSITE REVIEW: ANTIBIOTICS .
ABSITE Review Questions Antibiotics .
ABSITE Review Questions Immunology .
ABSITE Review Questions Inflammation and Cytokines .
ABSITE Review Questions Pharmacology Mechanism of Action .
– ABSITE Review Questions Transplantation .
Statistics and Epidemiology [SR][TAR]
– ABSITE Review Questions Statistics .
Digestion, and Absorption [SR]
Systemic response to injury and metabolic support [Schwartz]
Molecular and genomic surgery / Cell biology [Schwartz] [TAR]
Patient safety [Schwartz]
Surgical considerations in the elderly [Schwartz]
Ethics, palliative care, and care at the end of life [Schwartz]
GASTROINTESTINAL TRACT (Junior exam 10%, Senior exam 25%)
Hernias / Inguinal hernias [Schwartz][SR][TAR]
Abdomen / Abdominal wall, omentum, mesentery, and retroperitoneum [Schwartz][TAR]
Minimally Invasive surgery, robotics, and natural orifice transluminal endoscopic surgery / Surgical Technology [Schwartz] [TAR]
Esophagus / Esophagus and diaphragmatic hernia [Schwartz] [SR][TAR]
The surgical management of obesity [Schwartz]
Small bowel / Small intestine [Schwartz][SR][TAR]
Carcinoid tumors MCQs .
Small bowel syndrome MCQs .
Ulcerative colitis vs Crohns disease MCQs .
Crohn’s Disease MCQs .
Meckel’s Diverticulum MCQs .
Small bowel obstruction MCQs .
Small bowel tumors MCQs .
SMA Syndrome MCQs .
The Appendix [Schwartz]
Appendicitis MCQs .
Rectum and anus [Schwartz][SR][TAR]
Biliary system / Gallbladder and the extrahepatic biliary system [Schwartz] [SR][TAR]
Trauma (to abdominal organs) [Schwartz][SR][TAR]
Gastrointestinal hormones [TAR]
CV/RESPIRATORY (Junior exam 7.8%, Senior exam 16.7%)
Cardiac surgery / Congenital heart disease / Acquired heart disease [Schwartz][SR][TAR]
Thoracic surgery / Chest wall, lung, mediastinum and pleura [Schwartz][SR][TAR]
Trauma (to cardiac and lungs) [Schwartz] [SR][TAR]
Vascular surgery/ Thoracic aneurysms and aortic dissection / Arterial disease / Venous and lymphatic disease [Schwartz] [SR][TAR]
GU, Head and Neck, Skin, Musculoskeletal, CNS (Junior exam 7.8%, Senior exam 16.7%)
Otolaryngology / Disorders of the Head and Neck [Schwartz] [SR][TAR]
Plastic and reconstructive surgery / Skin / The skin and subcutaneous tissue / Soft tissues [Schwartz][TAR]
Sarcoma / Soft tissue sarcomas [Schwartz][SR][TAR]
BIOPSY TECHNIQ FOREARM LESION .
Orthopedic Surgery [Schwartz] [SR][TAR]
Surgery of the hand and wrist [Schwartz]
Endocrine, Spleen, Lymphoma, Breast (Junior exam 7.8%, Senior exam 16.7%)
Adrenal gland [Schwartz][SR][TAR]
– ABSITE REVIEW: ADRENAL GLAND .
Pituitary gland [TAR]
NOT SPECIFICALLY INCLUDED
Pediatric Surgery [Schwartz][SR][TAR]
ABSITE REVIEW: PEDIATRIC SURGERY .
REVIEW SHORT TERM MEMORY TOPICS INCLUDING GASTROINTESTINAL HORMONES, CALCULATIONS, ETC.
I KNOW THE TEST IS NOT ON JAN 30TH, SO YOU WILL HAVE TO PUSH SOME OF THESE DATES UP A BIT.
GOOD LUCK! LEAVE A COMMENT IF YOU FOUND THIS HELPFUL!!
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