Oral cavity
(Head and digestive system models)
- Tongue - muscular organ in the oral cavity; facilitates ingestion, mechanical digestion, chemical digestion (lingual lipase), sensation (taste, texture, and temperature of food), swallowing, and vocalization
- Teeth - located in the alveoli of mandible and maxilla; humans have two sets of teeth: 20 deciduous (baby) teeth first begin to appear at about 6 months of age and 32 permanent teeth replacing baby teeth around age 6 and 12; used to tear, grind, and otherwise mechanically break down food
- Parotid gland - extrinsic salivary gland; located anterior to the ears; secretes saliva into the mouth through the parotid duct ( located near the second upper molar tooth)
- Sublingual gland - extrinsic salivary gland; located on the floor of the mouth inferior to the tongue; secretes saliva into the mouth through the sublingual duct
- Submandibular gland - extrinsic salivary gland; located on the medial side of mandible; secretes saliva into the mouth through the submandibular ducts
Liver
(Digestive system model)
- Lobe (right and left) - the largest gland in the body; located in the abdominal cavity, in the RUQ, inferior to the diaphragm, superior to the gallbladder and lateral to the stomach. It has two primary lobes: a large right lobe and a much smaller left lobe (with additional caudate and quadrate lobes).
- Falciform ligament -a ligament that attaches the liver to the anterior body wall; separates the left and right lobes.
- Hepatic ducts (right and left) - tube-like structures that drain bile from the respective (right or left) lobe of the liver; merge into the common hepatic duct
- Common hepatic duct - tube-like structure exiting the liver and formed by merging right and left hepatic ducts; carries bile from the liver; merges distally with the cystic duct to form the common bile duct
- Gallbladder - a pear-shaped, hollow muscular sac located in the RUQ inferior to the liver; has a fundus (widest part), a body (more narrow) that tapers into the infundibulum, which then connects to the neck and cystic duct; stores, concentrates, and, when stimulated, propels the bile into the duodenum via the common bile duct
- Cystic duct - emerges from the neck of the gallbladder; merges with the common hepatic duct to form the common bile duct
- Common bile duct - tube-like structure formed where the common hepatic duct and the cystic duct join; joins with pancreatic duct distally and delivers bile to the duodenum.
Pancreas
(Digestive system model)
Pancreas - a mixed gland located in the abdominal cavity, retroperitoneal and dorsal to stomach.
- Head of pancreas - nestled into the “c-shaped” curvature of the duodenum
- Body of pancreas - middle part of the pancreas, between the head and the tail
- Tail of pancreas - thin tip of the pancreas in the left side of the abdomen, in close proximity to the spleen.
- Pancreatic duct (or major pancreatic duct) - the duct that joins the pancreas with the common bile duct; delivers pancreatic juice to the duodenum
- Greater duodenal papilla (or major duodenal papilla) - a rounded projection in the duodenum; place where the common bile duct and pancreatic duct drain.