Can’t Stand Science Class-feel like puking?
GreenHairclips asked:
we are one the section for organ systems for science, and i am a sorta hypochondriac. our teacher is telling us about all these different heart/lung/cardiovascular diseases. halfway through the class I always feel like i’m going to throw up. i am thinking to myself-what if i have that?!?! and by the time i get to algebra, i’m freaking out. anything i can do to calm down during science?
Filed Under Psychology | 2 Comments
How many diseases, disorders, illnesses, deformities, etc. are there in the world?
nix asked:
Related to the human body, all of the systems, and including the rare diseases.
By systems I mean:
Nervous
Digestive
Endocrine
Cardiovascular
Respiratory
Lymphatic/immune
Urinary
Reproductive
Muscular
Skeletal
Skin, hair, nails
include psychotic disorders as well
And include auto-immune, bacterial, and viral disorders too.
Include genetics and cancer as one disease.
Also include inflammatory diseases too. I MEAN EVERYTHING
Filed Under Other - Diseases | 4 Comments
Which of these are not a function of the cardiovascular system?
no asked:
a. transporting cells that attack disease causing microrganisms
b. carrying oxyege,glucose, and other needed materials
c. carrying waste products away from cells
d. controlling many body processes by means of chemicals
Filed Under Biology | 4 Comments
The number one cause of death in the United States is ______? Right answer = 10 pts?
Rick asked:
a - cardiovascular disease
b -hypertension
c - diabetes
d -cerebral thrombosis
Filed Under Other - Diseases | 3 Comments
Doctor HELP PLEASE or anyone else knows?
Sik Wog asked:
How does physical activity help cardiovascular disease. Please tell or if you no of a website.
Filed Under Other - Health | 1 Comment
Genetics and heart disease?
Jess asked:
is it possible for someone to get heart disease when they do regular cardiovascular exercise at least once a day for one hour, if they eat low cholesterol foods, but highblood pressure and narrow blood vessels are in there family? please give me the answer i want to show my mom i am right…
Filed Under Heart Diseases | 2 Comments
Can Summarize the discussion for me please?
mike asked:
We have demonstrated for the first time that inhalation of common air pollutants affects the systemic vasculature of humans. Short-term exposure to PM2.5 and O3 at levels that occur in urban environments causes acute conduit artery vasoconstriction without producing immediate alterations in endothelial-dependent or -independent vasomotion. This finding is important because it suggests that alterations in arterial tone may be a relevant mechanism contributing to air pollution–mediated acute cardiac events and because it provides evidence that the observations shown by large epidemiological studies are biologically plausible.1
Relevance of Conduit Artery Vasoconstriction
It is reasonable to suspect that the coronary vasculature may respond similarly to air pollution exposure because brachial and coronary reactivity strongly correlate (r=0.79, P<0.001 for brachial versus coronary FMD).10 Even so, a reduction in coronary diameter of this relatively small magnitude (0.1 mm) would have minimal impact on healthy adults. However, congruent with epidemiological findings that individuals at increased risk for acute air pollution–related cardiac events generally have pre-existing cardiovascular disease, 2 this degree of sudden coronary vasoconstriction could promote cardiac ischemia in those with underlying flow-limiting obstructive lesions or could trigger instability of susceptible plaques.11 Furthermore, the vasculature of patients with coronary risk factors is known to hyper-react to a variety of vasoconstrictors,12,13 which potentially increases their susceptibility for acute cardiac events after air pollution exposure. Additional investigations in the coronary circulation and in high-risk individuals are needed to confirm these hypotheses.
Mechanisms and Mediators of Vasoconstriction
Because this is the first study to investigate the effects of air pollution on the vasculature, a more complete understanding of the pathophysiological mechanisms underlying our observations and the specific pollutants involved requires further investigation. Substantial evidence links increased PM2.5 alone with cardiac mortality.1 However, our initial air pollution exposure was chosen to be PM2.5 plus O3 because this mixture occurs in "real-life" settings. At present, an effect on the vasculature partially mediated by O3 cannot be ruled out. Determinations of the relative importance of PM2.5 versus O3 and specific components in fine particulate matter await follow-up studies now that a meaningful effect of urban air pollution on vascular function has been demonstrated.
Potential biological mechanisms for the vasoconstriction include a reflex increase in sympathetic nervous system activity via stimulation of pulmonary vagal afferents14 or an acute increase in vascular ET release, analogous to cigarette smoking.15 PM2.5 inhalation has been shown to induce systemic inflammation and cytokine production,16 possibly related to free radical activity of components in particulate matter.17 In turn, these have the capacity to enhance vascular ET expression by direct mechanisms or via activation of oxidative stress pathways.6 Indeed, we have previously demonstrated the presence of increased plasma ET levels acutely after PM2.5 exposure.5
In conclusion, alterations in arterial tone and reactivity in response to PM2.5 and O3 exposure is a new arena for future research into the biological mechanisms linking air pollution with acute and potentially chronic cardiovascular events. Further investigations are needed to confirm and extend our findings to the coronary circulation and to subjects with existing heart disease.
Filed Under Biology | 1 Comment
Mr. Harris is a patient of your pharmacy who has recently been diagnosed with hyperlipidemia?
Julian S asked:
his physician has him on Lipitor 20 mg PO daily. in addition to drug therapy, what lifestyle change could Mr. harris make to decrease his risks of cardiovascular disease
Filed Under Medicine | 1 Comment
please give me a specific disease that affects each organ system?
SimpleWoman asked:
organ systems:
a. circulatory system
b. cardiovascular system
c. lymphatic system
d. digestive system
e. respiratory system
f. excretory system
a disease that affects all of those organ system. i also need to know its symptoms, diagnosis, treatment, prevention… source included please…
you’re answers would be a great help =)
Filed Under Other - Diseases | 1 Comment
Some Health Questions?
e_peppin asked:
What is the cause of cardiovascular diseases including some possible ways to treat and prevent these diseases, What are the functions of the immune system and what is an autoimmune disease? What are some controllable and uncontrollable factors that can increase the likelihood of injury, disease, or other health problems. Compare and contrast a heart attack and a stroke. How are they similar? How are they different?
surgicalstudy.com
Thanx
Filed Under Other - General Health Care | 2 Comments
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