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t. e. In biology, homeostasis ( British also homoeostasis; / hɒmioʊˈsteɪsɪs, - miə -/) is the state of steady internal physical and chemical conditions maintained by living systems. [ 1] This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within ...
[5] [6] [7] rather, a more fluid social structure where individuals could move from one category to another, or maintain or be given different labels depending on the context. In the 18th century, "casta paintings", imply a fixed racial hierarchy, but this genre may well have been an attempt to bring order into a system that was more fluid.
In public health, social distancing, also called physical distancing, [2] [3] [4] is a set of non-pharmaceutical interventions or measures intended to prevent the spread of a contagious disease by maintaining a physical distance between people and reducing the number of times people come into close contact with each other.
The word hemodynamics ( / ˌhiːmədaɪˈnæmɪks, - moʊ -/ [ 40]) uses combining forms of hemo- (which comes from the ancient Greek haima, meaning blood) and dynamics, thus "the dynamics of blood ". The vowel of the hemo- syllable is variously written according to the ae/e variation . Blood hammer. Blood pressure.
Pheromone. A fanning honeybee exposes Nasonov's gland (white – at tip of abdomen) releasing pheromone to entice swarm into an empty hive. A pheromone (from Ancient Greek φέρω (phérō) 'to bear' and hormone) is a secreted or excreted chemical factor that triggers a social response in members of the same species.
Many of these physiological needs must be met for the human body to remain in homeostasis. Air, for example, is a physiological need; a human being requires air more urgently than higher-level needs, such as a sense of social belonging. Physiological needs are critical to "meet the very basic essentials of life". [6]
Climate change is altering the geographic range and seasonality of some insects that can carry diseases, for example Aedes aegypti, the mosquito that is the vector for dengue transmission. Global climate change has increased the occurrence of some infectious diseases. Infectious diseases whose transmission is impacted by climate change include, for example, vector-borne diseases like dengue ...
Kwashiorkor is a type of severe acute malnutrition (SAM). SAM is a category, composed of two conditions: marasmus and kwashiorkor. [ 9] Both kwashiorkor and marasmus fall under the umbrella of protein–energy malnutrition (PEM). [ 10] These diseases are oftentimes discussed together, but are distinctly separate conditions of malnutrition.