Anatomy and Physiology 2e - Digestive System

What is the main function of the digestive system?

• To break down food and release nutrients

• To transport oxygen and nutrients to the body

• To regulate secretion in digestive glands

• To defend against pathogens

Tags

NGSS.MS-LS1-7

Which of the following is NOT an accessory digestive organ?

• Liver

• Gallbladder

• Pancreas

• Stomach

What are the four tissue layers of the alimentary canal?

• Mucosa, submucosa, muscularis, serosa

• Epithelium, lamina propria, muscularis mucosae, serosa

• Mucosa, submucosa, muscularis, adventitia

• Epithelium, lamina propria, muscularis, serosa

Which nervous system is responsible for intrinsic innervation of the alimentary canal?

• Enteric nervous system

• Autonomic nervous system

• Sympathetic nervous system

• Parasympathetic nervous system

What is the function of the submucosal plexus?

• Regulating digestive secretions

• Controlling motility of the alimentary canal

• Detecting food in the mouth

• Providing voluntary control over swallowing

Which layer of the alimentary canal is responsible for mechanical digestion and moving food along the canal?

• Mucosa

• Submucosa

• Muscularis

• Serosa

Where does the hepatic portal system drain the nutrient-rich blood from the small intestine?

• Liver

• Heart

• Lungs

• Kidneys

What is the function of the peritoneum?

• To hold the abdominal organs in place

• To absorb nutrients from the small intestine

• To regulate secretion in the digestive glands

• To defend against pathogens

Which type of epithelium is found in the stomach and intestines?

• Non-keratinized stratified squamous epithelium

• Simple columnar epithelium

• Pseudostratified columnar epithelium

• Transitional epithelium

What is the purpose of the myenteric plexus?

• Regulating motility of the alimentary canal

• Detecting food in the mouth

• Controlling voluntary swallowing

• Providing sensory feedback to the brain