Lab 9 – Digestive System
Anatomy
Dr. Kim Wilson
Lab Manual Reference
• Exercise 38 pg. 575
PART A: ANATOMY OF THE
HUMAN DIGESTIVE SYSTEM
•
INSTRUCTIONS:
1. Using the human torsos, locate as many as
possible of the following structures from the
list, "Major Structures of the Human
Digestive System." Use your textbook for
reference.
2. Answer related questions on the Questions
Sheet.
MAIN ORGANS OF THE
DIGESTIVE SYSTEM
• 1. MOUTH
-Lips
-Cheeks
-Hard Palate
-Soft Palate
-Uvula
uvula
Pharynx
- Fauces
The passage from
the back of the
mouth to the
pharynx, bounded
by the soft palate,
the base of the
tongue, and the
palatine arches.
- Oropharynx
- Laryngopharynx
Esophagus
Stomach
-Fundus
-Body
-Pylorus
-Lesser Curvature
-Greater Curvature
-Cardiac Sphincter
-Pyloric Sphincter
-Rugae
Pylorus part
of the
stomach
Small Intestine
- Duodenum
- Jejunum
- Ileum
- Plicae Circulares
Large Intestine
-
Ileocecal Valve
Cecum
Colon
Ascending Colon
Transverse Colon
Descending Colon
Sigmoid Colon
Hepatic Flexure
Splenic Flexure
Rectum
Anal Canal
Anus
Haustra
Taenia Coli
-
-
-
Ileocecal Valve
Cecum
Colon
- Ascending Colon
- Transverse Colon
- Descending
Colon
Sigmoid Colon
Hepatic Flexure
Splenic Flexure
Rectum
- Anal Canal
- Anus
Haustra
Taenia Coli
Large Intestine
Rectum
ACCESSORY ORGANS OF THE
DIGESTIVE SYSTEM
SALIVARY GLANDS
- Parotid Glands
- Submandibular Glands
- Sublingual Glands
•
•
•
•
Root
Tip
Body
Papillae:
Vallate,
Fungiform,
Filiform
Teeth
•
•
•
•
•
•
•
Crown
Neck
Root
Incisors
Cuspids(Canines)
Bicuspids(Premolars)
Tricuspids(Molars)
Teeth
•
•
•
•
•
•
•
Crown
Neck
Root
Incisors
Cuspids(Canines)
Bicuspids(Premolars)
Tricuspids(Molars)
Teeth
LIVER
-Lobes:
Left (1); Right (3)
-Hepatic Ducts:
Right & Left; Common
Liver
Liver
MEMBRANES OF THE ABDOMINAL
CAVITY (PERITONEUM)
1.
2.
3.
4.
4.
5.
6.
Parietal Peritoneum - the part of the peritoneum that lines the
abdominal wall
Visceral Peritoneum - the part of the peritoneum that lines the
abdominal viscera
Mesentery: A layer of connective tissue that is in vertebrates. It
supports portions of the small intestine, protects nerves and blood
vessels from the central system to the organ.
Transverse Mesocolon
Greater Omentum: A fat-filled, web-like structure draped over the
internal organs; it protects the pancreas.
Lesser Omentum: It connects the stomach and liver, and has two
portions- the gastrohepatic ligament, and the hepatoduodenal
ligament.
Falciform Ligament
PART B: ANATOMY OF THE
CAT DIGESTIVE SYSTEM
• INSTRUCTIONS:
1.Obtain your assigned cat and locate each
of the structures from the list, "Major
Structures of the Cat Digestiven System."
Use your lab manual (Color Photo Gallery)
and the Rust lab manual for reference.
2.Answer related questions on the
Questions Sheet.
Esophagus
Liver Lobes
Villi
You would have to cut open the duodenum to see the villi.
1.
Diaphragm
7.
Right Medial Lobe of
Liver
2.
Round Ligament
8.
Right Lateral Lobe of
Liver
3.
Falciform Ligament 9.
Gall Bladder
4.
Left Lateral Lobe
of Liver
Spleen
5.
Left Medial Lobe of
11.
Liver
6.
Quadrate Lobe of
Liver
10.
Greater Omentum
Transverse
Colon
1.
Small Intestine
6.
2.
Mesentary
7.
Descending
Colon
3.
Ileum
8.
Sigmoid
Colon
4.
Cecum
9.
Mesocolon
5.
Ascending
Colon
10.
Greater
Omentum
1. Liver
2. Gall bladder
3. Stomach
4. Spleen
5. Small
intestine
6. Abdominal
muscle
1 Parietal Peritoneum
2 Visceral Peritoneum
3 Small Intestine
4 Colon
5 Greater Omentum
6 Kidneys
7 Right Renal Vein
8 Left Renal Vein
9 Right Renal Artery
10 Left Renal Artery
11 Inferior Mesenteric Artery
12 Left Iliolumbar Artery and Vein
13 Inferior Vena Cava
14 Femoral Artery
15 Femoral Vein
16 Superior Mesenteric Vein
17 Hepatic Portal Vein
18 Gastrosplenic Vein
19 Superior Mesenteric Artery
20 Greater Saphenous Vein
21 Urinary Bladder
22 External Iliac Artery
23 Internal Iliac Artery
24 Pancreas
25 Rectum
Differences in Human and Cat
Digestive Systems
• The cat has six lobes in their liver, and
humans only have four lobes.