Essay on Case Study

1230 Words Feb 27th, 2015 5 Pages
Module 04 Case Study: Cardiovascular and Immune/Lymphatic Systems
Each question is worth 1 point, unless otherwise noted.
I’ve Fallen Over and I Can’t Get Up: Part I—"Children Playing in The Heat" Questions

1. What signs and symptoms did Greg exhibit when he was in the house?
Some signs and symptoms Greg experienced were thirst, dizziness, and turgor.

2. Was Mrs. Myron correct when she said that Greg was dehydrated? Which signs and symptoms are consistent with this notion? Mrs. Myron thought that it was not necessary to seek medical treatment. Do you think she was correct?
I believe Mrs. Myron was correct when she said Greg was dehydrated. All his signs and symptoms are symptoms of dehydration. I would probably have taken him to
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Unlike bacteria, that have everything it needs to reproduce, viruses need to use a living cell's organelles in order to replicate.

2. In general, how does humoral and cellular immunity differ?
Cellular immunity does not involve antibodies and humoral does.

3. Understanding that HIV is a retrovirus (a virus that uses reverse transcriptase), answer the following questions:

a. What is reverse transcriptase?
Transcriptase is an enzyme that catalyzes the formation of DNA from an RNA template in reverse transcription.

b. How is a retrovirus different from other viruses?
A retrovirus composed of DNA and RNA virus with the most complex replication, so it is different from a regular virus.

c. How does a retrovirus infect a cell and reproduce?
On encountering a host cell, the retrovirus attaches itself to receptors on the surface of the host cell’s membrane. Once inside the cell, the capsid opens, releasing RNA and reverse transcriptase into the cell’s cytoplasm.

4. In regards to reviewing the immune system, answer the following questions:

a. What is the difference between a T-cell and B-cell?
B-cells mature in bone marrow; T-cells mature in the thymus.

b. What is the difference between innate immune response and adaptive immune response?
Innate immunity refers to nonspecific defense mechanisms that come into play immediately or within hours of an antigen's appearance in the body. Adaptive immunity refers to antigen-specific immune response.

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