Exercise 38: Anatomy of the Digestive System
SUBDIVISON OF THE LAYER: SURFACE EPITHELIUM, LAMINA PROPRIA, MUSCULARIS MUCOSAE
MAJOR FUNCTIONS: SECRETION, ABSORPTION, AND PROTECTION
THE GENERAL ANATOMICAL FEATURES OF THE ALIMENTARY CANAL GIVEN THE LAYER, NAME THE SUBDIVISIONS OF THE LAYER, AND MAJOR FUNCTIONS.
WALL LAYER: MUCOSA
SUBDIVISON OF THE LAYER: NONE
MAJOR FUNCTIONS: NUTRITION AND PROTECTION
THE GENERAL ANATOMICAL FEATURES OF THE ALIMENTARY CANAL GIVEN THE LAYER, NAME THE SUBDIVISIONS OF THE LAYER, AND MAJOR FUNCTIONS.
WALL LAYER: SUBMUCOSA
SUBDIVISON OF THE LAYER: SMOOTH MUSCLE LAYERS ARE= INNER LAYER(CIRCULARLY) AND OUTER LAYER(LONGITUDINALLY)
MAJOR FUNCTIONS: REGULATOR OF GI MOTILITY
THE GENERAL ANATOMICAL FEATURES OF THE ALIMENTARY CANAL GIVEN THE LAYER, NAME THE SUBDIVISIONS OF THE LAYER, AND MAJOR FUNCTIONS.
WALL LAYER: MUSCULARIS EXTERNA
SUBDIVISON OF THE LAYER: VISCERAL PERITONEUM, MESOTHELIUM, ADVENTITIA (EPITHELIUM AND CONNECTIVE TISSUES)
MAJOR FUNCTIONS: ANCHORS, PROTECTS, AND REDUCES FRICTION
THE GENERAL ANATOMICAL FEATURES OF THE ALIMENTARY CANAL GIVEN THE LAYER, NAME THE SUBDIVISIONS OF THE LAYER, AND MAJOR FUNCTIONS.
WALL LAYER: SEROSA OR ADVENTITIA
1. ALIMENTARY
2. DIGESTIVE (GI)
THE TUBELIKE DIGESTIVE SYSTEM CANAL THAT EXTENDS FROM THE MOUTH TO THE ANUS IS KNOWN AS THE __1__ CANAL OR THE __2__ TRACT.
BESIDES CIRCULAR AND LONGITUDINAL LAYERS OF SMOOTH MUSCLES, IT HAS INNERMOST LAYER THAT RUNS OBLIQUELY.
HOW IS THE MUSCULARIS EXTERNA OF THE STOMACH MODIFIED?
LETS STOMACH MIX, CHURN AND MOVE FOOD ALONG TRACT (CIRCULAR/LONGITUDINAL) BUT ALSO TO PUMMEL FOOD, BREAK DOWN INTO SMALLER PIECES AND RAM FOOD TO SMALL INTESTINE (OBLIQUE).
HOW DOES THIS MODIFICATION RELATE TO THE FUNCTION OF THE STOMACH?
SQUAMOUS CELLS IN THE ESOPHAGUS TO COLUMNAR CELL IN THE GASTRIC MUCOSA.
WHAT TRANSITION IN EPITHELIAL TYPE EXISTS AT THE GASTROESOPHAGEAL JUNCTION?
SIMPLE COLUMNAR (GASTRIC) FOR ABSORPTION AND STRATIFIED SQUAMOUS (ESOPHAGUS) FOR PROTECTION.
HOW DO THE EPITHELIA OF THESE TWO ORGANS RELATE TO THEIR SPECIFIC FUNCTIONS?
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LARGE INTESTINE EXTENDS FROM ILEOCECAL VALVE TO ANUS, BUT COLON IS PART OF THE LARGE INTESTINE AND DIVIDED INTO: ASCENDING, DESCENDING AND SIGMOID COLON.
DIFFERENTIATE BETWEEN THE COLON AND THE LARGE INTESTINE.
MESENTERY
STRUCTURES THAT SUSPEND THE SMALL INTESTINE FROM THE POSTERIOR BODY WALL
VILLI
FINGERLIKE EXTENSIONS OF THE INTESTINAL MUCOSA THAT INCREASE THE SURFACE AREA FOR ABSORPTION
PEYER'S PATCHES
LARGE COLLECTIONS OF LYMPHOID TISSUE FOUND IN THE SUBMUCOSA OF THE SMALL INTESTINE
CIRCULAR FOLDS
DEEP FOLDS OF THE MUCOSA AND SUBMUCOSA THAT EXTEND COMPLETELY OR PARTIALLY AROUND THE CIRCUMFERENCE OF THE SMALL INTESTINE
ORAL CAVITY, STOMACH
REGIONS THAT BREAK DOWN FOODSTUFFS MECHANICALLY
TONGUE
MOBILE ORGAN THAT MANIPULATES FOOD IN THE MOUTH AND INITIATES SWALLOWING
PHARYNX
CONDUIT FOR BOTH AIR AND FOOD
GREATER OMENTUM, MESENTERY, LESSER OMENTUM
THREE STRUCTURES CONTINUOUS WITH AND REPRESENTING MODIFICATIONS OF THE PERITONEUM
ESOPHAGUS
THE "GULLET"; NO DIGESTIVE/ABSORPTION FUNCTION
RUGAE
FOLDS OF THE GASTRIC MUCOSA
HAUSTRA
SACCULATIONS OF THE LARGE INTESTINE
MICROVILLI
PROJECTIONS OF THE PLASMA MEMBRANE OF A MUCOSAL EPITHELIAL CELL
ILEOCECAL VALVE
VALVE AT THE JUNCTION OF THE SMALL AND LARGE INTESTINE
SMALL INTESTINE
PRIMARY REGION OF FOOD AND WATER ABSORPTION
FRENULUM
MEMBRANE SECURING THE TONGUE TO THE FLOOR OF THE MOUTH
LARGE INTESTINE
ABSORBS WATER AND FORMS FECES
VESTIBULE
AREA BETWEEN THE TEETH AND LIPS/CHEEKS
APPENDIX
WORMLIKE SAC THAT OUTPOCKETS FROM THE CECUM
STOMACH
INITIATES PROTEIN DIGESTION
LESSER OMENTUM
STRUCTURES ATTACHED TO THE LESSER CURVATURE OF THE STOMACH
SMALL INTESTINE
ORGAN DISTAL TO THE STOMACH
PYLORIC VALVE
VALVE CONTROLLING FOOD MOVEMENT FROM THE STOMACH INTO THE DUODENUM
SOFT PALATE
POSTEROSUPERIOR BOUNDARY OF THE ORAL CAVITY
SMALL INTESTINE
LOCATION OF THE HEPATOPANCREATIC SPHINCTER THROUGH WHICH PANCREATIC SECRETIONS AND BILE PASS
PARIETAL PERITONEUM
SEROUS LINING OF THE ABDOMINAL CAVITY WALL
LARGE INTESTINE
PRINCIPAL SITE FOR THE SYNTHESIS OF VITAMIN K BY MICROORGANISMS
ANUS
REGION CONTAINING TWO SPHINCTERS THROUGH WHICH FECES ARE EXPELLED FROM THE BODY
HARD PALATE
BONE-SUPPORTED ANTEROSUPERIOR BOUNDARY OF THE ORAL CAVITY
CLINICAL CROWN
VISIBLE PORTION OF THE TOOTH IN SITU
CEMENTUM
MATERIAL COVERING THE TOOTH ROOT
ENAMEL
HARDEST SUBSTANCE IN THE BODY
PERIODONTAL LIGAMENT
ATTACHES THE TOOTH TO BONE AND SURROUNDING ALVEOLAR STRUCTURES
ROOT
PORTION OF THE TOOTH EMBEDDED IN BONE
DENTIN
FORMS THE MAJOR PORTION OF TOOTH STRUCTURE, SIMILAR TO BONE
ODONTOBLAST
PRODUCES THE DENTIN
PULP
SITE OF BLOOD VESSELS, NERVES, AND LYMPHATICS
ANATOMICAL CROWN
ENTIRE PORTION OF THE TOOTH COVERED WITH ENAMEL
1. 20
2. 32
IN THE HUMAN, THE NUMBER OF DECIDUOUS TEETH IS __1__; THE NUMBER OF PERMANENT TEETH IS __2__.
2 INCISORS, 1 CANINE, 2 PREMOLARS AND 3 MOLARS ON UPPER TEATH, 2 INCISORS, 1 CANINE, 2 PREMOLARS AND 3 MOLARS ON LOWER TEETH. MULTIPLIED BY 2.
THE DENTAL FORMULA FOR PERMANENT TEETH IS
2,1,2,3
------- x 2
2,1,2,3
EXPLAIN WHAT THIS MEANS.
2,1,0,2
------- x 2 = 20
2,1,0,2
WHAT IS THE DENTAL FORMULA FOR THE DECIDUOUS TEETH?
THE THIRD MOLARS
WHICH TEETH ARE THE "WISDOM TEETH"?
DUODENAL GLANDS
PRODUCE(S) MUCUS; FOUND IN THE SUBMUCOSA OF THE SMALL INTESTINE
SALIVARY GLANDS
PRODUCE(S) A PRODUCT CONTAINING AMYLASE THAT BEGINS STARCH BREAKDOWN IN THE MOUTH
PANCREAS
PRODUCE(S) A WHOLE SPECTRUM OF ENZYMES AND AN ALKALINE FLUID THAT IS SECRETED INTO THE DUODENUM
LIVER
PRODUCE(S) BILE THAT IT SECRETES INTO THE DUODENUM VIA THE BILE DUCT
GASTRIC GLANDS
PRODUCE(S) HCI AND PEPSINOGEN
INTESTINAL CRYPTS
FOUND IN THE MUCOSA OF THE SMALL INTESTINE; PRODUCE(S) INTESTINAL JUICE
PAROTID GLAND
WHICH OF THE SALIVARY GLANDS PRODUCES A SECRETION THAT IS MAINLY SEROUS?
STORES BILE
WHAT IS THE ROLE OF THE GALLBLADDER?
HEPATIC ARTERY, HEPATIC PORTAL VEIN, AND BILE DUCT.
NAME THREE STRUCTURES ALWAYS FOUND IN THE PORTAL TRIAD REGIONS OF THE LIVER.
SINUSOID WALLS.
REMOVE DEBRIS SUCH AS BACTERIA OR WORNOUT BLOOD CELLS FROM THE BLOOD.
WHERE WOULD YOU EXPECT TO FIND THE KUPFFER CELLS OF THE LIVER? WHAT IS THEIR FUNCTION?
BECAUSE IT HAD A HIGH AMOUNT OF BLOOD THAT CIRCULATES THROUGH THE LIVER.
WHY IS THE LIVER SO DARK RED IN THE LIVING ANIMAL?
ACINAR CELLS
THE PANCREAS HAS TWO MAJOR POPULATIONS OF SECRETORY CELLS - THOSE IN THE ISLETS AND THE ACINAR CELLS, WHICH POPULATIONS SERVES THE DIGESTIVE PROCESS?