Areas where these elements occur in large concentrations are usually barren of plants and animals. Other naturally occurring toxins are substances produced by plants and animals. In many cases, these toxins are part of a plant or animal's natural defense system, protecting them from other plants ...
Environmental toxinsrefer to hazardous substances produced by humans or introduced to the environment due to human actions, negatively affecting the health of organisms exposed to them. They include a wide range oforganic and inorganiccompounds such as heavy metals, medicines, and poisonouschemicalsthat...
Antigens may be exogenous, endogenous, or autoantigens. Exogenous antigens are those that are able to gain entry inside the human body. Examples include allergens, proteins from transplanted tissues and organs, substances on the surface of foreign cells, toxins, and other foreign particles. Endoge...
Antigen-presenting cells-The processing of antigens is done by antigen-presenting cells which include dendritic cells, macrophages, and B-lymphocytes with the dendritic cells being the most effective. These cells play a major role in interacting with the antigen, Dendritic cells are predominant in p...
Secondhand smoke is the third largest preventable cause of death in the United States. behind regular smoking and Alcohol use. Cigarette smoke contains 4.000 substances, With 400 of them are toxins and 40 of them have been proven to cause cancer. Some of the substances in cigarette smoke are ...
Some examples include: Thickness of the peptidoglycan layer The presence of a lipopolysaccharide layer The production of exotoxins The production of endotoxins These differences and their implications in medicine are discussed in further detail in the section below. Gram-Positive vs. Gram-Negative Cell...
Elderly people are especially vulnerable to air pollution because: 1. They have been exposed to pollutants for a long time. 2. Their bodies take longer to get rid of toxins. (Images: pexels.com) Cause of deaths TheWorld Health Organizationsays that globally, air pollution accounts for: ...
siblings is 5%-15%. A child of a parent suffering from schizophrenia has about a 10% chance of developing the illness, in contrast to the risk of schizophrenia in the general population being about 1%. Toxins like ketamine ormarijuanaincrease the risk of developing acute (rapid onset) ...
Animals exhibit symmetrical bodies.Symmetrymeans the body part is divided into two similar equal halves. There are many types of symmetry which include: Lesson Quiz Course 19Kviews Cnidaria Examples Cnidarians are numerous, there are various Cnidaria examples which include: ...
Homeostasis is the state of internal balance and equilibrium when there is an imbalance the body is unable to go back to equilibrium. A homeostatic imbalance is a disruption of homeostasis in the body which can be caused by environmental factors, genetics, lifestyles, toxins and many other factor...