The Respiratory and Digestive System LABORATORY TWELVE The Respiratory and Digestive System We study them together because they share some structures and locations.

Upper Respiratory System Sagittal head section: Fig 12.3. p216, where divisions of pharynx is indicated is correct, but fig 12.13, p222, the division of pharynx is wrong…Make sure to use fig 13.3 as your reference and cross out letters f & g on fig 23.23…The remaining indicated structures are correct in fig 12.13…Make sure to study those…

Anatomy of Larynx

Anatomy of Trachea and Lungs

The Digestive System

Four Layers of the Alimentary Canal Villi increase the surface area, therefore, increase absorption up to 90%

The Salivary Glands View the tongue model for the circumvallate & fungiform papillae

Anatomy of Stomach

The Liver, Gallbladder, Pancreas, & Duct System Spleen has a concavity to it that kidney does not have…do not make a mistake these two structures. Fig 12.18, p223: The magnified region of liver is another model, make sure you learn the assigned structures on both models Spleen is convoluted, but not kidney

Peritoneum (Mesenteries and Omenta) The body wall of the abdominal cavity and the abdominal organs are covered with serous membranes that keep organs together: Parietal peritoneum lines the abdominal cavity (blue) Visceral peritoneum covers abdominal organs (red) Retroperitoneal organs are behind the parietal peritoneum The mesenteries are membranes that connect abdominal organs to each other and to the body wall Specific mesenteries are given names; such as, omentum A copy of this figure will be in the practicum for you to identify different peritoneum…

Spirometry A technique used to measure respiratory volume (12C Procedure, P218) Alcohol wipe the built-in mouth piece and let it air dry Put the disposable mouth piece on Plug your nose, and breath into (not inhale from) the spirometer Follow the step-by-step instruction very carefully Divide in groups of three One subject One reading the instruction One performing the required calculations Record your data and calculations in your lab report Study Fig 12.9 for Practicum III