HLTB21H3 Final: Exam review notes part 3

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mauveclam202

29 Apr 2011

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1939: evidence established that it was die to niacin- deficiency (vitamin b3) 1917-1921: goldberger: did an epidemiological study: cause = diet. Bread enhancement and mandatory enrichment laws since 1938 led to a major decline in cases niacin-deficiency (vitamin b3) needed for nomal oxidative metabolism of sugars. 1616: neurological disorder characterized by paralysis of hands and feet. Early 1900s: eijkman did chicken study and established: disease is not germ-related. 16th centu ry: men in sea voyages were noted to have gums that grew over their teeth could not eat death. 18th centu ry: james lind" did the first controlled clinical t rial: disease was related to nutrition and lemon juice intake. Late 19th centu ry: the disease was restricted to industrial cities: scotland, necessary for normal cell metabolism of sugar and alcohol. deficiency in vc shuts down the synthesis of collagen deficiency of solar ultraviolet radiation. It act as a sterol to produce calciferol (vitamin d3)

Related Questions

In the 20th century, decades of progress in reducing mortality due to acute infectious diseases was reversed due to A. Decreased public health funding B. HIV/AIDS pandemic C. Increased focus on chronic diseases D. None of the above

viridiancod415

The middle of the last century was a time of great confidencein science and medicine. The introduction of antibiotics in the1940s and a lengthening list of vaccine for preventing numerousdieases caused many medical experts to declare a victory. For ashort time, there was a sense that infectious diseases were goingto be completely manageable. But this optimistic viewpoint was on acollision course with a vast army of very tiny invaders that areeverywhere-namely, microorganisms. Based on recent reseach,worldwide death toll of infectious disease is approximately 13milion people per year.

Account for one of the catastrophic microbial diseases thatterrorized poeple for a period of time. Use any applicable diseasefrom the biblical time until recent and even current time.

Include the following in your posting: Name of the selectedmicrobial disease, the causative agent of infection,characteristics of the disease, vaccine availability, and methodsof treatment, if applicable. In addition to Epidemiology andetiology of the disease and historical events related to thisdisease.

maroonlouse968

A : Experiment Analysis : BeriBeri

Directions : Read the enclosed case study of BeriBeri and respond to the questions below. Use your knowledge of scientific method and what facts are required for a study to be valuable and valid. Place the letter of the correct answer in the spaces provided.

The Problem : In 1887 a strange nerve disease attacked the people of the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite and victims often died of heart disease. Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from the blood of patients with beriberi. The injected chickens became sick. However, so did a group of chickens that were not injected with bacteria.

One of the scientists, Dr. Eljkman, noticed something. Before the experiment, all the chickens had eaten whole grain rice, but during the experiment, the chickens were fed polished rice. Dr. Elijkman researched this interesting case and found that polished rice lacked thiamine, a vitamin necessary for good health.

1.What was the hypothesis?

A. Thiamine deficiency caused the disease.

B. Beriberi was caused by bacteria.

C. Chickens can get heart failure.

D. Blood was really not contaminated

2. Did Dr. Elijkman use scientific method to provethiamine caused beriberi?

a. Yes b. NO

3. Should the original hypothesis be accepted or ejected?

A. Accepted b. Rejected

4. What was the actual problem?

A. Determining if thiamine is important.

B. How to inject the chickens

C. Curing the chickens

D. Finding the cause of beriberi

5. An experiment (and this one), should be a test of a valid hypothesis.

(TRUE OR FALSE)

harlequindeer214

HLTB21H3 Final: Exam review notes part 3

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