Gastrointestinal System Flashcards
What are the 5 basic functions of the digestive system?
- Ingestion.
- Movement of food.
- Digestion.
- Absorption.
- Defecation
What 4 processes happen in mechanical digestion?
- Movement of food
- maceration of food
- smooth muscle churns food.
- Mixed with enzymes
What happens in chemical digestion?
Enzyme split large carbohydrates, lipids and proteins into smaller molecules which are absorbed
What 2 groups are the digestive organs divided into?
- Accessory structures.
- Alimentary canal
Name the 6 accessory digestive organs?
- Teeth.
- Tongue.
- Salivary glands.
- Liver.
- Gallbladder.
- Pancreas
How long is the alimentary canal?
30 ft in a dead body shorter in a live person
What does the parietal peritoneum do?
- Lines abdominopelvic cavity
What does the visceral peritoneum do?
Covers organs in the abdominopelvic cavity
What is the peritoneal cavity?
Space between parietal and viscera peritoneum
What does the peritoneal cavity contain?
Serous fluid
Name the 4 parts of the peritoneum.
- Mesentery.
- Mesocolon
- Greater Omentum
- Lesser Omentum.
What are the functions of the mesentery?
- Binds intestine to posterior of body cavity
What are the functions of the Mesocolon?
- Binds large intestine
- Allows movement of small and large intestine.
- Support and attachment
What are the functions of the Greater Omentum?
- Large folds drape over small and large intestine.
- Large amounts of fat deposits.
- Lymph Nodes.
- Gut infections
Name the 6 areas of the oral cavity.
- Cheeks.
- Hard and soft palate.
- Tongue.
- Labia (lips)
- Frenulum
- Uvula
The tongue is made up of 2 symmetrical halves. What separates the 2 halves?
- Medial septum
What does the medial septum of the tongue attach to?
Hyoid bone
What is the attachment below the tongue called?
Lingual frenulum
What are 3 areas of the pharynx called?
- Nasopharynx.
- Oropharynx
- Laryngopharynx
There are 3 sets of the salivary glands, name them.
- Parotid.
- Submandibular
- sublingual
A tooth is made up of which areas?
- Crown.
- Neck.
- Roots (1 to 3)
- Pulp cavity
What does the pulp of teeth contain?
- Blood vessels.
- Nerves.
- Lymphatic vessels