Subject Code : Biology235
Assignment Task:

Task:

1. Fill in the words or phrases that best complete each sentence. Be as specific as possible.
a. Erythrocytes contain the enzyme _____, which catalyzes the conversion of metabolically produced CO 2 and water into _____.
b. Most old erythrocytes are removed from circulation and destroyed by cells called _____, as they rupture passing through the narrow capillaries of the organ called the _____.
c. Undifferentiated cells called _____ reside in the bone marrow, where they continuously divide and _____ to give rise to each of the types of blood cells.
d. The process of leukocytes squeezing through the capillary _____ to exit the vasculature is known as _____. Once they leave the bloodstream to fight a pathological condition, they never return.
e. The genetically-determined glycoprotein and glycolipid antigens found on the surface of an erythrocyte are called _____, and a person with agglutinins that react with type A and blood type B has type _____ blood.
f. During embryonic development, ninety-nine percent of the cardiac fibers are specialized for the function called _____, whereas the remainder is specialized for _____.
g. The action potential delay at the _____ ensures that atrial excitation and contraction are complete before _____ excitation and contraction commence.
h. The _____ is the volume of blood in the ventricle after ejection has been completed. An increase of this volume occurs when the stroke volume is _____.
i. The three cations, K + , Ca 2+ , and Na + have an important effect of heart function. Increased blood levels of Na + blocks _____ inflow and results in a decrease in the force of contraction, while an excess of _____ blocks the generation of action potentials.
j. An increase in parasympathetic activity has the following effect on stroke volume: _____. An increase in parasympathetic activity _____ atrial contractility.
2. A patient has the misfortune to have both diabetes insipidus and Addison’s disease. How will those conditions affect the patient’s ability to regulate blood pressure?


3. In the correct sequence, list the names of the blood vessels and heart’s chambers that an RBC would travel through (or flow into other vessels) on its journey from the muscles located anterior to the right tibia to the heart, then to the left shoulder muscles, and then back to the heart. Take in consideration only the vessels listed in the Study Guide.

4. Describe the activation, proliferation and differentiation of T cells and B cells and briefly describe the functions of the differentiated cells.

 

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  • Posted on : January 23rd, 2019

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