ANAEXAM5?s (Digestive)

Gross anatomy of the large intestine

Diagram

Structural modifications of the small intestine that increase the surface area for digestion and absorption

Diagram: -circular folds -villi -microvilli

Which type of nerve fibers are NOT found in smooth muscle? -postganglionic parasympathetic fibers -preganglionic parasympathetic fibers -postganglionic sympathetic fibers -preganglionic sympathetic fibers

Preganglionic sympathetic fibers synapse in collateral ganglia (celiac, superior mesenteric, or inferior mesenteric) before continuing to innervate the smooth muscle of the gastrointestinal tract.

Which of these statements accurately describes important differences in the histology of the stomach compared to other regions of the digestive tract? -There are three layers of smooth muscle in the muscularis mucosa. -The outer layer is called adventitia. -There are three layers of smooth muscle in the muscularis externa. -The outer layer is the serosa (visceral peritoneum).

There are three layers of smooth muscle in the muscularis externa.

The alimentary canal and the accessory digestive organs

accessory organs: -tongue, salivary glands, pancreas, liver, and gallbladder.

Which of the following organs is an accessory digestive organ? -duodenum -pharynx -esophagus -gallbladder

gallbladder **Accesory digestive: Teeth and tongue, Gallbladder, salivary glands, liver, and pancreas -The gallbladder empties bile into the alimentary canal, but it is not part of the alimentary canal (the tube extending from the oral cavity to the anus).

The nerve plexus located between the two layers of the muscularis externa is the __________ and its function is __________.

myenteric nerve plexus / controlling peristalsis and segmentation

All of these organs contribute to mechanical digestion EXCEPT ? -small intestines -tongue -submandibular, sublingual and parotid salivary glands -teeth

submandibular, sublingual and parotid salivary glands