BIOS 255 Week 7 - Respiratory System Physiology Lab Report

BIOS 255 Week 7 - Respiratory System Physiology Lab Report. Active cells require a constant supply of oxygen in order to produce energy to carry out cellular processes and release carbon dioxide as a waste product. The body must replenish this supply of oxygen and remove the build-up of carbon dioxide, as it is toxic to cells in high concentrations. The respiratory membrane provides a large surface area and a thin, permeable, and moist surface where the gaseous exchange of oxygen and carbon dioxide can take place. At this site, carbon dioxide is released from the blood into the alveoli and out of the body with each exhalation. Oxygen is obtained from air in the alveoli with each inhalation and diffuses into the blood, where it is carried to cells of the body. The respiratory membrane is composed of the cells that form the alveolar wall and those that form the capillary wall. It forms a barrier between the air in the lungs and the blood in the capillaries. The membrane is very thin, measuring only 0.5 μm across, to facilitate the rapid diffusion of oxygen and carbon dioxide across it. Our respiratory rate, or the number of breaths we take per minute, and the depth at which we respire with each breath is controlled by the respiratory center, located in the brainstem. It ensures that our respiratory effort matches the metabolic demands of our body. Assignment: Part 1: Complete the activities in Anatomy. TV for Respiratory System: Respiratory Membrane and Gas Exchange, Control of Respiration To access Anatomy.TV: Resources tab>Library>Library Resources-Database AZ>Anatomy.TV>Titles(default tab): Choose assigned system>choose assigned sections You will then work through the material and activities by scrolling down on the right. This will allow you to see and work through all activities for that section. Part 2: Complete the lab report. Respiratory Physiology Lab Report 1. Purpose: The purpose of this lab is to understand the structures and physiology of the respiratory system. 2. Procedure: Read and complete the interactive sections on Anatomy.TV