Biod 151 Final Exam Portage Learning

Label the following bones of the skeleton from the figure below: {Ans: 2: Nasal bone, 4: Zygomatic bone, 6: Inferior nasal concha, 7: Maxilla, 8: Mandible}c. Exocytosis is the process that occurs to bring biomacromolecules inside the cell. (T or F) {Ans: c. False- (This process is called endocytosis)}List two organs contained in the abdominal cavity. {Ans: The abdominal cavity contains the stomach, intestines, spleen and liver}From widest to narrowest, the branches of the bronchial tree are: {Ans: Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles}Describe parietal cells and chief cells: name their location, secretions and purposes. {Ans: The parietal cells (located in the wall of the stomach body) secrete hydrochloric acid, generating a pH of 1.3-3.5. This very acidic pH kills many of the bacteria ingested along with food. In addition, the low pH stops the activity of salivary amylase. The secretion of hydrochloric acid is essential in the activation of pepsin. Chief cells: secrete pepsinogen. Pepsinogen (a pre-enzyme) is secreted by the chief cells in the stomach. Hydrochloric acid converts the inactive pepsinogen (secreted by the chief cells) into the active enzyme pepsin which begins the breakdown of proteins.}You are observing two cells under