Our Services

Get 15% Discount on your First Order

[rank_math_breadcrumb]

L5D

CHECK FILE


Lab DS: Digestive System

ALL DIAGRAMS ARE NOT INCLUDED EXCEPT THE LAST PAGE

Key Terms

Digestive System Structures

Alimentary canal (gastrointestinal tract) _________________________________________________________

______________________________________________________________________________________________________

Accessory organ ____________________________________________________________________________________

______________________________________________________________________________________________________

Peritoneal cavity ____________________________________________________________________________________

______________________________________________________________________________________________________

Gastroesophageal sphincter ________________________________________________________________________

______________________________________________________________________________________________________

Pyloric sphincter ____________________________________________________________________________________

______________________________________________________________________________________________________

Duodenum ___________________________________________________________________________________________

______________________________________________________________________________________________________

Jejunum ______________________________________________________________________________________________

______________________________________________________________________________________________________

Ileum ________________________________________________________________________________________________

______________________________________________________________________________________________________

Colon ________________________________________________________________________________________________

______________________________________________________________________________________________________

Salivary glands _______________________________________________________________________________________

______________________________________________________________________________________________________

Pancreas _______________________________________________________________________________________

______________________________________________________________________________________________________

Liver _________________________________________________________________________________________________

______________________________________________________________________________________________________

Gallbladder ___________________________________________________________________________________________

______________________________________________________________________________________________________

Digestive Histology

Mucosa ______________________________________________________________________________________________

______________________________________________________________________________________________________

Submucosa ___________________________________________________________________________________________

______________________________________________________________________________________________________

Muscularis externa __________________________________________________________________________________

______________________________________________________________________________________________________

Serosa _______________________________________________________________________________________________

______________________________________________________________________________________________________

Differentiate Between the Digestive Tract and the Accessory Digestive Organs:

List the basic parts of the digestive tract.

List the accessory organs of the mouth.

List the accessory organs of the small intestine.

Anatomy of the Digestive System:

·

· Salivary Glands

· Parotid salivary glands and ducts

· Submandibular salivary glands and ducts

· Sublingual salivary glands and ducts

· Pharynx

· Nasopharynx (not part of digestive tract)

· Oropharynx

· Laryngopharynx

· Esophagus

· Stomach

· Cardiac sphincter / lower esophageal sphincter

· Cardia

· Fundus

· Body

· Greater curvature

· Lesser curvature

· Rugae / gastric folds

· Pylorus

· Pyloric sphincter

· Small intestine

· Duodenum

· Major duodenal papilla

· Circular folds (plicae circulares)

· Jejunum

· Ileum

· Large Intestine

· Ileocecal valve

· Cecum

· Appendix

· Ascending colon

· Hepatic flexure (r colic flexure)

· Transverse colon

· Splenic flexure (L colic flexure)

· Descending colon

· Sigmoid colon

· Taeniae coli

· Haustra

· Rectum

· Anus

· Anal sphincter (internal and external)

· Peritoneal extensions

· Greater omentum

· Lesser omentum

· Falciform ligament

· Mesentery

· Mesocolon

Accessory organs of the small intestine

· Liver

· Right lobe

· Left lobe

· Gall bladder

· Pancreas

· Head

· Body

· Tail

· Main pancreatic duct

· Accessory pancreatic duct

· Biliary system

· Right hepatic duct

· Left hepatic duct

· Common hepatic duct

· Cystic duct

· Common bile duct

· Hepatopancreatic duodenal ampulla

Trace the movement of food from mouth to anus.

Histology
of Selected Portions of the Digestive Tract

Esophagus

· Mucosa

· Stratified squamous epithelium

· Lamina propria

· Muscularis mucosae

· Submucosa

· Esophageal glands

· Muscularis externae

· Circular muscle layer

· Longitudinal muscle layer

· Adventitia

The mucosa consists of three layers: the outer, dark-stained stratified squamous epithelium, the lamina propria, and a muscularis mucosae. The thick, pink-stained submucosa contains purple-stained esophageal glands which produce mucus for lubrication. Look for ducts from these glands connecting to the mucosal surface. Two layers of the muscularis muscle layer and the outer longitudinal muscle layer. The thick, outermost layer is the adventitia.

Stomach: Ruga

· Mucosa

· Gastric pits

· Gastric glands

· Submucosa

· Muscularis externae

· Oblique muscle layer

· Circular muscle layer

· Longitudinal muscle layer

· Serosa

· Simple squamous epithelium

On lowest power, note the fold of combined mucosa and submucosa; this is a ruga. On high power, in the mucosa, identify numerous depressions, called gastric pits, and gastric glands, which produce gastric secretions and are located at the base of each gastric pit. Surrounding the individual gastric glands is the lamina propria. Just below the lamina propria’s base, the muscularis mucosae is visible as a distinct layer of smooth muscle, which contracts to help expel gastric gland secretions. In the submucosa, find arteries and veins, note that this layer is thickest in the ruga. Beneath the submucosa, find arteries and veins, note that this layer is thickest in the ruga. Beneath the submucosa look for the oblique, circular, and longitudinal layers of the muscularis externae. Finally, identify the serosa, composed of simple squamous epithelium which is the outermost layer.

Small intestine: Villi

· Mucosa

· Simple columnar epithelium (Note the microvilli forming the brush border and mucus secreting goblet cells)

· Lamina propria

· Submucosa

· Muscularis externae

· Circular muscle layer

· Longitudinal muscle layer

· Serosa

· Simple squamous epithelium

On lowest power, note the villi, which are numerous, deep folds of intestinal mucosa. On low power, observe that each villus has an outer layer of epithelium with a core of connective tissue, the lamina propria. On high power, locate goblet cells in the simple columnar epithelium. The hazy appearance of the top border of the cells is due to the presence of microvilli, forming the brush border. On low power, again, observe that the submucosa blends with the lamina propria of the villi. The muscularis externae consists of circular and longitudinal layers. A thin serosa of simple squamous epithelium forms the outermost layer.

Colon / Large Intestine

· Mucosa

· Simple columnar epithelium (Note the presence of MANY Goblet cells)

· Intestinal glands

· Lamina propria

· Submucosa

· Muscularis externae

· Circular muscle layer

· Longitudinal muscle layer

· Serosa (not always visible)

· Simple squamous epithelium

In the high power view, note the closely packed intestinal glands in the mucosa, which is made of simple columnar epithelium and is filled with many goblet cells which produce mucus to help with the movement of undigested materials through the large intestine. On the low power view, note the submucosa is thin and dense in this section. The circular muscle layer often shows dense streaks where ends of neighboring smooth muscle cells overlap. The longitudinal muscle layer and serosa can also be identified. Occasional lymphoid tissue is seen.

How to identify/distinguish different parts of the GI Tract Using the Microscope

All of the digestive tract is lined with some kind of epithelium.

THIS DIAGRAM ABOVE IS PART OF THE HIGHLIGHTED ASSIGNMENT…COULDN’T HIGHLIGHT

image6.png

image1.png

image2.png

image3.png

image4.png

image5.png

Share This Post

Email
WhatsApp
Facebook
Twitter
LinkedIn
Pinterest
Reddit

Order a Similar Paper and get 15% Discount on your First Order

Related Questions

Health

This is not an essay paper. Please respond to the questions with no references needed. Tuscaloosa Medical Center has just been notified via letter that they have been selected for a security audit by the OCR. This review is not due to a compliant but rather a random review. The

Health

Please keep the assignment on a word doc Choose one of the following options for your analysis. Using the data included in the file  AB202019_Ch14_casemixindex_1996_2018_20190628 CA.xlsx  Download AB202019_Ch14_casemixindex_1996_2018_20190628 CA.xlsx. Prepare a graphic that compares Your Hospital’s CMI to your benchmark facility, the county’s, and the state’s CMI for the past

Do you like music?

 By sharing your creations, you encourage others to tap into their own creativity and explore their own musical styles. All throughout the world, players of the game get together to make music and share it with one another.   sprunki incredibox 

How to overcome obstacles?

 A wide range of challenges await you as you make your way through the game’s numerous levels. It will take practice to get through the more difficult stages, so be prepared to level up your game.   geometry dash lite

Airport

Analyze the narrative structure of the text ‘Frustration at the Airport’ and discuss how it contributes to the overall emotional impact of the story. 

How to play the game?

 To maximize your energy while leveling up ragdoll archers and shoot down enemies with a single shot. The score is based on the number of adversaries shot down.      ragdoll archers

Project

See attachments please Explain in detail why you believe your Eldertopia will be beneficial. Be comprehensive in your Eldertopia. For example, include ways that your population will maintain their physical and mental health, how they will be able to socialize, how they will interact, the purpose of your decisions, how

English

see attached  Short paragraph of 300 words. What if the writers of the US Constitutions had not included the right of habeas corpus? How might our system of criminal justice be different today?

Sources

See attached worksheet for instructions and attachments.  Use the five attachments to complete the following: Document 1 Title: Click or tap here to enter text. Type of document: Click or tap here to enter text. Year created: Click or tap here to enter text. Who likely read this document? Click

Help

See Attachment  Use the 5 Sources attached to Write a 2 page reflective essay that explores the following questions. You must cite (using footnotes or endnotes) if you directly quote any sources. Please only use the sources attached. 1. What did looking at all of these sources, in addition to

book5

1. Overview As a middle manager, you have already recommended an innovation approach (incremental or discontinuous) to your organization for implementing IoT into its product line. However, one of your organization’s key luxury-market competitors in passenger vehicles recently launched a fully autonomous luxury sedan prototype. It has announced that it

tiktok

  Instagram is a free social media platform for sharing photos, videos, and stories. Users can follow others, like and comment on posts, and use filters and hashtags to enhance and discover content.

Why should you choose Geometry Dash Lite as a relaxing game?

Are you looking for a game that is both fun and engaging? Try  Geometry Dash Lite, where reflexes and music combine to create an incredibly addictive experience! With eye-catching graphics, lively background music and simple yet challenging gameplay, you won’t be able to stop once you start. Try to overcome

assigned

Write a brief 2-3 page report about a health care economic issue that you have identified. Address the reasons why you selected the issue you did; identify how this issue impacts the work of you, your colleagues, and your organization; and describe the gap that you see contributing to this

dsl

Comm 106i: Midterm Reflection Essay 1 Due: Friday, April 25, 11:59pm on Canvas In class peer review session: Wednesday, April 23 Paper reflection log due Wednesday, April 23 at the start of class for a check off How do internet companies affect life, work, and relationships in your community? How

Week 3 Bio 1300

Select two of the unit student learning outcome (USLO) prompts below to respond to in this week’s reflection. USLO 3.1 Identify the structure and function of the heart.  USLO 3.2 Differentiate the pulmonary and systemic circuits. USLO 3.3 Identify the events in an action potential that are generated in cardiac

brochure……………………

 Create a brochure advertising various positions within counseling agencies/human services organizations. When you describe the positions, be specific in noting academic and licensure credentials and other relevant information. 

Best tools or methods to study for CELPIP?

I’m planning to take the CELPIP soon for my PR application. Just wondering — what tools, apps, or methods did you find most helpful while preparing? Any specific resources you’d recommend for self-study?