University:
Sam Houston State University
Course:
BIOL 5385 | Mammalogy
Academic year:

2023
Views:

362

Pages:

15
Author:

ashleymondayxz54

What type of system is this? 1 2 Objectives  Evaluate animals that are monogastric.  Analyze the components of a monogastric stomach.  Interpret the parts and functions of monogastric digestive system  Analyze the enzymes in a monogastic . 3 4 Digestion is the process by which large, complex nutrient molecules are broken down into simpler molecules capable of being used by the organism for food. 5 Humans, swine, rabbits, chickens and horses all have a simple stomach, which is also known as a monogastric digestive system. 10/6/2024 6 Monogastric  Carnivores and omnivores have monogastric digestive systems.  Monogastric systems have a simple stomach structure and only one compartment.  Some animals with monogastric digestive systems are pigs and rabbits. Humans also have monogastric digestive systems. 7 8 Monogastric Stomach  Split into 4 parts:  Esophageal  Non-glandular  Connects the stomach to the esophagus  Cardiac  Mucus secretion starts here  Fundic  Body of the stomach  Digestion and churning takes place here  Mucus secretion  Pyloric  Connects to small intestines  Mucus secretion Monogastric Stomach  The monogastric stomach is very acidic  pH drops to 2.0-3.5  Amylase quits working due to low pH  Has a mucus lining to protect the stomach from digesting itself  Made of smooth muscle to aid in constant churning/mixing Monogastric stomach cont.  HCl is produced, denatures proteins and prepares them to be broken down  Pepsinogen is the inactive form of Pepsin  Pepsin, activated form of Pepsinogen, activated by HCl  Pepsin breaks down and digests the denatured protein Parts and functions of the monogastric mammal digestive system continued… •Small Intestine -enzymatic digestion and absorption -Functions of the small intestine: digestion of proteins, carbohydrates, and fats; absorption of the end products of digestion 1. duodenum - most digestion occurs here 2. jejunum - some digestion and some absorption occur 3. ileum - mostly absorption -Bile - made in liver, stored in gall bladder, active in the small intestine, emulsifies fat to aid in digestion 12 Parts and functions of the monogastric mammal digestive system continued… •Cecum - essentially non-functioning in many monogastrics. Rabbits and horses have an enlarged cecum that acts like a rumen and is involved with microbial digestion (fermentation) • Large Intestine -bacterial activity -water absorption -waste storage 13 Parts and functions of the monogastric mammal digestive system continued… •Enzymes in the small intestine 14 Review  Evaluate animals that are monogastric.  Analyze the components of a monogastric stomach.  Interpret the parts and functions of monogastric digestive system  Analyze the enzymes in a monogastic . 16

Monogastric (Non-Ruminant) Digestive System

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