1. Which part of the respiratory system is composed ofC-shaped cartilaginous rings and cilia?a. pharynxb. larynxc. trachead. bronchiolese. alveolicavity-pharynx-glottis-trachea-larynx-bronchi-bronchioles-alveoli2. The greatest surface area for gas exhange occurs within thea. tracheab. bronchic. bronchiolesd. alveoli3. Which association is not correct?a. larynx–voice boxb. trachea-windpipec. alveoli-gas exchanged. pharynx-vocal cordse. hair and mucus–nasal passages4. In […]

Today, nearly everyone is familiar with the concepts of prisons, reformatories, and jails. Institutional corrections have become so commonplace in the United States that many people take their existence for granted. Residential institutions, however, are a fairly recent historical phenomenon. Read about the origins of prisons at:  http://www.howardleague.org/index.php?id=31 (Links to an […]

Human Biology 1. Where does lymph come from? 2. List the primary lymphatic organs. List the secondary lymphatic organs. 3. What structures allow the lymph to enter the cardiovascular system? 4. Why is the thymus so critical in immunity? 5. Can a person live without a spleen? 6. Explain the […]

1. Which diagram most accurately shows the arrangement of homologous chromosomes during the first metaphase of meiosis? Please explain why and how does this arrangement determine the law of “equal segregation”? 2. Which diagram most accurately shows the arrangement of homologous chromosomes during the first metaphase of mitosis? Please explain […]