NO sputum questions so I’ll give you a softball bonus question….   The main stimulus that drives increased breathing during exercise is a drop in blood levels of oxygen.  

  Which statement accurately describes alveolar and systemic gas exchanges?  

  Bronchoconstriction results from relaxation of smooth muscle in the walls of airways.  

  The lungs remain inflated because…  

  The body replaces cells damaged by the virus with scar tissue, which is thick and stiff.  This can result in a condition called “pulmonary fibrosis”, which has been seen in people with COVID-19 and is probably more likely to develop if the lungs are severely affected by the infection.  Pulmonary fibrosis….  

  Which lymphoid organ cleanses the lymph… serves predominately in immune surveillance and in filtering lymph?  

  Put the following terms in the correct sequence of levels according to the structural (or biological) hierarchy.  NOTE:  it starts with POPULATION at the top and ATOM at the bottom.  

  What is the name of the column of neurons within the medulla that initiates neural impulses for inspiration and expiration during quiet breathing?  

  Select the CORRECT statement about lymph transport.  

How do you find the domain of a rational function?  Be clear on what is included in the domain or be clear on what is NOT included in the domain.