Everything from water bears and rotifers to 15, year old sponges made of glass, and an immortal cnidarian. AKC for Kids Mostly about how to care for dogs and puppies, some reproducibles. The AKC list of recognized breeds has much information about different dog breeds, would be useful for reports.
Virchow wondered whether the bacteria that he often saw in infections were the cause or a side-effect, but eventually came to accept Pasteur's demonstration of their infectious nature.
If you have not had "Med Micro", don't worry. We are concerned with what these organisms do to people, rather than details of their biology. Everyone in the class will probably want to skim the section of a good pathology book to review basic microbiology and tissue reactions.
The study of infectious disease is especially interesting because the etiologies of most of these diseases is clear -- damage by an invader. And if the invaders can be killed, the disease can be arrested. Today, only a few fools and crooks deny that micro-organisms cause disease.
Yet the microbe is seldom the whole story or the "single" cause.
Most infectious agents are, in some sense, opportunists "secondary invaders". Often, the chink in the host's armor is some personal characteristic. Staph aureus takes advantage of dirt and body hair.
Propionibacterium acnes flourishes in a milieu of chocolate and testosterone.
Folk wisdom relates the common cold to body chilling. Athlete's foot fungus likes if when we don't dry between our toes.
Often, known immune deficiency congenital, acquired, iatrogenic provides the portal. We all know the dread infections seen in patients on chemotherapy, by organisms once considered "non-pathogens". The Epstein-Barr virus causes infectious mono if that in healthy people, but causes cancer in AIDS victims and boys with X-linked immunodeficiency.
Patients given glucocorticoids often have major problems with superficial fungi ringwormand worse. Diabetics have ineffective neutrophils and high glucose, facts that make them vulnerable to Candida infections. Often, therapy itself provides the gateway for the infectious agent.
Candida flourishes in intravenous hyperalimentation catheters, E.
Staph epidermidis from a blood culture is no joke if it's growing on a prosthetic heart valve. And for many if not most organisms, it is often unclear why one person who meets the microbe becomes very sick, and the next person is spared.
A Bergey's of potentially deadly bacteria can be found in most people's normal flora. The polio virus usually causes only a GI upset if thatand only a few people go on to become paralyzed.
Histoplasmosis is usually trivial, but sometimes overwhelms a person who was in robust good health. AIDS only gets transmitted during the most intimate body-fluid sharing. During Ebola outbreaks, mortality is very high but some people's illness is only subclinical.
The manifestations of Lyme disease are protean and unpredictable. However, a few organisms, when found, always indicate disease. If you drink a milk-shake laced with staphylococcal enterotoxin Byou're going to get food poisoning. The organism and its host have a mutually advantageous arrangement mitochondria producing ATP, E.
The organism does the host no good and no harm worthless bugs in the gut, hepatitis B carrier Parasite: The organism thrives by actually doing harm to the host i.
The organism lives off dead stuff i.Sep 12, · Tens of thousands of years ago, our ancestors spread across the world, having sex with Neanderthals, Denisovans and other groups of ancient humans as they went. UNITED NATIONS ENVIRONMENT PROGRAMME INTERNATIONAL LABOUR ORGANISATION WORLD HEALTH ORGANIZATION INTERNATIONAL PROGRAMME ON CHEMICAL SAFETY ENVIRONMENTAL HEALTH CRITERIA Aluminium This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of .
Organ Systems of the Human Body The human body is made up of 11 organ systems. The Integumentary System, Skeletal System, Muscular System, Nervous System, Endocrine System, Circulatory System, Lymphatic System, Respiratory System, Urinary System, Digestive System, and Reproductive System for the male and female.
Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning. Albert Einstein. INTERNATIONAL PROGRAMME ON CHEMICAL SAFETY ENVIRONMENTAL HEALTH CRITERIA GLYPHOSATE This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the United Nations Environment Programme, the International Labour Organisation, or the World Health Organization.
Meat is animal flesh that is eaten as food. Humans have hunted and killed animals for meat since prehistoric times. The advent of civilization allowed the domestication of animals such as chickens, sheep, rabbits, pigs and cattle.