BIOS 255 Discussions with Answers Unit 1 - 7

BIOS 255 Unit 1 Discussion; The Heart The human heart is a four-chambered hydraulic pump. A hydraulic pump uses differences in pressure to move material from areas of higher pressures to areas of lower pressures. The pressure differences created by the heart move blood between the chambers and the c...

BIOS 255 Unit 2 Discussion; Blood Flow Dynamics Cardiac output is the amount of blood ejected from the left or right ventricle in any given minute. Cardiac output must be maintained in order to keep sufficient blood flow throughthe capillaries. Identify the factors that directly affect blood flow in...

BIOS 255 Unit 2 Discussion; Blood Vessel Structure Let’s start by discussing the structure of our blood vessels. Let’s each take a characteristic of (1) arteries, (2) veins, or (3) capillaries. Build upon what your classmates say to enable us to have a more full understanding of these vessels th...

BIOS 255 Unit 3 Discussion; Liquid Connective Tissue Explain the similarities and differences among serum, lymph, and plasma. Take one characteristic of the fluid, extracellular component of this connective tissue and explain how it relates to the other liquids.

BIOS 255 Unit 3 Discussion; Whole Blood Describe the composition, physical characteristics, and functions of whole blood. Explain why it is classified as a connective tissue.

BIOS 255 Unit 4 Discussion; Nonspecific Immunity How do the various elements of the nonspecific immune system function in providing daily protection against a variety of pathogens? Each student should provide a unique aspect of the nonspecific immune system and educate the rest of us concerning its ...

BIOS 255 Unit 4 Discussion; The Lymphatic System How do the various components of the lymphatic system operate? We have talked about many organ systems. In what ways are components of the lymphatic system involved in many other organ systems? Try to focus on one element of this system and provide an...

BIOS 255 Unit 5 Discussion; B and T Cells Our knowledge and understanding of the various forms of lymphocytes continue to expand. Our initial discussion this week will be on the various forms of B and T cells -- each of us should take one class of lymphocytes and explain it's role in the adaptive i...

BIOS 255 Unit 5 Discussion; Vaccinations - Friend or Foe Recently a number of individuals have claimed that adjuvants, such as thymersol in vaccines, lead to the development of a variety of disorders, such as autism. Although these initial claims have not been substantiated and have since been withd...

BIOS 255 Unit 6 Discussion; Breathing Describe the events that cause inhalation and exhalation and how Boyle’s law relates to the events.

BIOS 255 Unit 7 Discussion; Respiratory Diseases Compare the causes and consequences of chronic bronchitis, emphysema, asthma, and lung cancer. Once we have made these comparisons then we should follow up on other disorders that affect either the upper or lower respiratory systems. Be sure to commen...

BIOS 255 Unit 7 Discussion; Transport of Gases Describe how oxygen and carbon dioxide are transported in the blood, and explain how their loading and unloading is affected by temperature, pH, BPG, and PCO2.