There is not a cure for HIV yet, but there is an effective treatment for reducing the likelihood of transmission of HIV from an infected mother to her unborn child (or born child, through breast milk). In the absence of treatment, the likelihood of transmission averages about 25%. In collaboration with Eastern Mediterranean University Faculty of Pharmacy, a Cyprus based, private pharmaceutical company KuntePharma develop a new drug called HIV-OFF. Researchers from the university and KuntePharma, travel to X country in Africa and ask 200 pregnant HIV-positive mothers there to participate in a trial for a new drug that reduces, “from mother to child” HIV transmission. It is said that, the reasons of choosing Africa are: “Compared to Cyprus it would cost much less and the fact that laws and regulations allow more flexibility to conduct the research in the X country”. The give 100 women a placebo, and they give 100 women HIV-LESS. Of the 100 HIV-LESS children, only 1 contract HIV. Of the 100 placebo children, 44 do. In this study, 45 children contract HIV, when it is likely that, if all the participants were given HIV-LESS, less would have. Are the scientists morally responsible for the transmission of HIV to more children in this trial? Remembering the concepts Consent, Placebo, Risk-benefit-harm, The Rights of the Patients, exploitation; respect for persons and utilitarian approaches and others that you might think relevant to this case, which were discussed during the course, discuss if this trial is ethical? You might compare the dynamics of this case with historic examples that caused drastic changes in understanding of experimentations on human beings and formed the present day ethical principles and laws.

heart valves and pumps lab experiment

What happened when you pressed on the balloon stretched over the jar? What structure in this experiment mimics a heart valve? How did valve influence the experimental results? If possible, indicate the differences in water displaced (in ml) with valve versus without the Valve. Does the valve enhance water flows? Why?

please help

What is an example (real or not) of evolution in which you explain how each of the three conditions, plus mutation, produce change in a population.

Explain the negative feedback loop between baroreceptors, the cardiovascular (CV) center, and the heart. Address: dropping blood pressure, heart stimulation, and hormonal vessel constriction. How do these all work together to achieve homeostasis?

What role does altruism play in Ayn Rand’s version of ethical egotism found in her book The Virtue of Selfishness?

a. Natural inclination

b. Opposition to true morality

c. Intangible goal

d. Saintly virtue

1.

A) The effects thyroxine secretion on the body are increased metabolic rate and heat production. Are these two responses related or are they independent of one another? Explain your answer.

B) When thyroxine levels in the blood are low, the level will return to normal due to negative feedback. Describe the events in the negative feedback loop that returns thyroxine to normal levels. Include names of the organs and hormones involved.

C) Compare the BMR of a normal rat, a thyroidectomized rat, and a hypophysectomized rat (highest to lowest) before and after an injection of an equal amount of TSH.   What accounts for the differences or similarities?

What are the differences and similarities between phasic and tonic contractions? Where are the two most likely to be found?

Thanks

What would happen to the SA node if a chemical blocker was used to reduce transport of Na+ into the pacemaker cells?

**Physiology

6. What features are necessary for the cell to engage in facilitated diffusion rather than simple diffusion? Secondary active transport rather than primary active transport (is this different for symport and antiport? What advantages do we derive by putting these modifications in place?

2. Make a concept map of the cell membrane. Include each of the functions of the cell membrane listed below. Make sure each function is correctly linked to the components of the cell membrane responsible for each function

1. separates intracellular fluid (ICF) from extracellular fluid (ECF)
2. provides permeability barrier
3. contains surface proteins acting as antigens - important for recognition of “self”
4. provides cell communication: receptors and signal transduction pathways for hormones and neurotransmitters
5. contains a variety of adhesion molecules allows anchoring, tissue organization
6. acts as a highly selective filter

7. In mythology, the cosmic man appears grossly swollen and may be seen pictures as a human rain cloud. Propose a mechanism whereby this mythological creature could swell up and fill with water. (It is not going to be true, so you can’t look this up – it’s just for fun to see if you understand how it could work.)

Discuss information technology~ collection, modeling, and surveillance of disease agents.

1. Expound on one of the following disease and the use of technology in disease surveillance:

The flu epidemic, Malaria, Measles, Zika Virus, HIV, Typhoid, or other globally impacting disease. What goals/procedures would you recommend in the event of a global epidemic?

2. What roles do social inequality and absolute poverty have as determinants of health?   What roles does information technology play in global public health? (May need to give examples)

3. What is the role of computers in modeling natural disasters? What is the healthcare professional's responsibility in disasters (natural and human-made) such as Hurricane Katrina and the Deep Horizon oil spill?

Course: Healthcare Automation and Technology

The lymphatic system includes our bodies' defenses against infections. AIDS, Leukemia, many autoimmune disorders, and allergies are all manifestations of a breakdown in the normal functioning of the lymphatic system. Find an online source that helps to explain how these diseases interact with the lymphatic system mechanisms. Provide the link and a brief summary of fewer than 250 words. Then, read at least two classmates' posts. What questions are you still wondering about after reading the summary they posted?

1. _______ corpuscles respond to heavery pressure

2. Skin touch is sensed by ________ receptors

3. Pain in the left arm caused by lack of blood to the heart is atype of _________ pain

4. Relatively thin nerve fibers associated with the sensation of sharp pain

5. The pain supresing mor[hine like substance in our body known as the natural pain control

6. List two types of headaches

7. Define sensory adaptation

Average blood velocity is 11cm/s in the human ascending aorta. The average diameter of the aorta is 2.1cm.

a) How much blood passes through the aorta each day in gallons?

b) How does this compare to the total quantity of blood you have in your body?

c) If 45% of the aorta becomes clogged, what is the new blood velocity?

serous membrane: which one is a thicker membrane and why? (pericardium, peritoneum or pleura)