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Exercise 38: Anatomy of the Digestive System

1.

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

2.

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

3.

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

4.

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

5.

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.

6.

BESIDES CIRCULAR AND LONGITUDINAL LAYERS OF SMOOTH MUSCLES, IT HAS INNERMOST LAYER THAT RUNS OBLIQUELY.

HOW IS THE MUSCULARIS EXTERNA OF THE STOMACH MODIFIED?

7.

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?

8.

SQUAMOUS CELLS IN THE ESOPHAGUS TO COLUMNAR CELL IN THE GASTRIC MUCOSA.

WHAT TRANSITION IN EPITHELIAL TYPE EXISTS AT THE GASTROESOPHAGEAL JUNCTION?

9.

SIMPLE COLUMNAR (GASTRIC) FOR ABSORPTION AND STRATIFIED SQUAMOUS (ESOPHAGUS) FOR PROTECTION.

HOW DO THE EPITHELIA OF THESE TWO ORGANS RELATE TO THEIR SPECIFIC FUNCTIONS?

10.

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11.

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.

12.

MESENTERY

STRUCTURES THAT SUSPEND THE SMALL INTESTINE FROM THE POSTERIOR BODY WALL

13.

VILLI

FINGERLIKE EXTENSIONS OF THE INTESTINAL MUCOSA THAT INCREASE THE SURFACE AREA FOR ABSORPTION

14.

PEYER'S PATCHES

LARGE COLLECTIONS OF LYMPHOID TISSUE FOUND IN THE SUBMUCOSA OF THE SMALL INTESTINE

15.

CIRCULAR FOLDS

DEEP FOLDS OF THE MUCOSA AND SUBMUCOSA THAT EXTEND COMPLETELY OR PARTIALLY AROUND THE CIRCUMFERENCE OF THE SMALL INTESTINE

16.

ORAL CAVITY, STOMACH

REGIONS THAT BREAK DOWN FOODSTUFFS MECHANICALLY

17.

TONGUE

MOBILE ORGAN THAT MANIPULATES FOOD IN THE MOUTH AND INITIATES SWALLOWING

18.

PHARYNX

CONDUIT FOR BOTH AIR AND FOOD

19.

GREATER OMENTUM, MESENTERY, LESSER OMENTUM

THREE STRUCTURES CONTINUOUS WITH AND REPRESENTING MODIFICATIONS OF THE PERITONEUM

20.

ESOPHAGUS

THE "GULLET"; NO DIGESTIVE/ABSORPTION FUNCTION

21.

RUGAE

FOLDS OF THE GASTRIC MUCOSA

22.

HAUSTRA

SACCULATIONS OF THE LARGE INTESTINE

23.

MICROVILLI

PROJECTIONS OF THE PLASMA MEMBRANE OF A MUCOSAL EPITHELIAL CELL

24.

ILEOCECAL VALVE

VALVE AT THE JUNCTION OF THE SMALL AND LARGE INTESTINE

25.

SMALL INTESTINE

PRIMARY REGION OF FOOD AND WATER ABSORPTION

26.

FRENULUM

MEMBRANE SECURING THE TONGUE TO THE FLOOR OF THE MOUTH

27.

LARGE INTESTINE

ABSORBS WATER AND FORMS FECES

28.

VESTIBULE

AREA BETWEEN THE TEETH AND LIPS/CHEEKS

29.

APPENDIX

WORMLIKE SAC THAT OUTPOCKETS FROM THE CECUM

30.

STOMACH

INITIATES PROTEIN DIGESTION

31.

LESSER OMENTUM

STRUCTURES ATTACHED TO THE LESSER CURVATURE OF THE STOMACH

32.

SMALL INTESTINE

ORGAN DISTAL TO THE STOMACH

33.

PYLORIC VALVE

VALVE CONTROLLING FOOD MOVEMENT FROM THE STOMACH INTO THE DUODENUM

34.

SOFT PALATE

POSTEROSUPERIOR BOUNDARY OF THE ORAL CAVITY

35.

SMALL INTESTINE

LOCATION OF THE HEPATOPANCREATIC SPHINCTER THROUGH WHICH PANCREATIC SECRETIONS AND BILE PASS

36.

PARIETAL PERITONEUM

SEROUS LINING OF THE ABDOMINAL CAVITY WALL

37.

LARGE INTESTINE

PRINCIPAL SITE FOR THE SYNTHESIS OF VITAMIN K BY MICROORGANISMS

38.

ANUS

REGION CONTAINING TWO SPHINCTERS THROUGH WHICH FECES ARE EXPELLED FROM THE BODY

39.

HARD PALATE

BONE-SUPPORTED ANTEROSUPERIOR BOUNDARY OF THE ORAL CAVITY

40.

CLINICAL CROWN

VISIBLE PORTION OF THE TOOTH IN SITU

41.

CEMENTUM

MATERIAL COVERING THE TOOTH ROOT

42.

ENAMEL

HARDEST SUBSTANCE IN THE BODY

43.

PERIODONTAL LIGAMENT

ATTACHES THE TOOTH TO BONE AND SURROUNDING ALVEOLAR STRUCTURES

44.

ROOT

PORTION OF THE TOOTH EMBEDDED IN BONE

45.

DENTIN

FORMS THE MAJOR PORTION OF TOOTH STRUCTURE, SIMILAR TO BONE

46.

ODONTOBLAST

PRODUCES THE DENTIN

47.

PULP

SITE OF BLOOD VESSELS, NERVES, AND LYMPHATICS

48.

ANATOMICAL CROWN

ENTIRE PORTION OF THE TOOTH COVERED WITH ENAMEL

49.

1. 20
2. 32

IN THE HUMAN, THE NUMBER OF DECIDUOUS TEETH IS __1__; THE NUMBER OF PERMANENT TEETH IS __2__.

50.

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.

51.

2,1,0,2
------- x 2 = 20
2,1,0,2

WHAT IS THE DENTAL FORMULA FOR THE DECIDUOUS TEETH?

52.

THE THIRD MOLARS

WHICH TEETH ARE THE "WISDOM TEETH"?

53.

DUODENAL GLANDS

PRODUCE(S) MUCUS; FOUND IN THE SUBMUCOSA OF THE SMALL INTESTINE

54.

SALIVARY GLANDS

PRODUCE(S) A PRODUCT CONTAINING AMYLASE THAT BEGINS STARCH BREAKDOWN IN THE MOUTH

55.

PANCREAS

PRODUCE(S) A WHOLE SPECTRUM OF ENZYMES AND AN ALKALINE FLUID THAT IS SECRETED INTO THE DUODENUM

56.

LIVER

PRODUCE(S) BILE THAT IT SECRETES INTO THE DUODENUM VIA THE BILE DUCT

57.

GASTRIC GLANDS

PRODUCE(S) HCI AND PEPSINOGEN

58.

INTESTINAL CRYPTS

FOUND IN THE MUCOSA OF THE SMALL INTESTINE; PRODUCE(S) INTESTINAL JUICE

59.

PAROTID GLAND

WHICH OF THE SALIVARY GLANDS PRODUCES A SECRETION THAT IS MAINLY SEROUS?

60.

STORES BILE

WHAT IS THE ROLE OF THE GALLBLADDER?

61.

HEPATIC ARTERY, HEPATIC PORTAL VEIN, AND BILE DUCT.

NAME THREE STRUCTURES ALWAYS FOUND IN THE PORTAL TRIAD REGIONS OF THE LIVER.

62.

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?

63.

BECAUSE IT HAD A HIGH AMOUNT OF BLOOD THAT CIRCULATES THROUGH THE LIVER.

WHY IS THE LIVER SO DARK RED IN THE LIVING ANIMAL?

64.

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?