Environmental Protection and Health: Key Factors
Environmental Protection
Selective Waste Sorting: Selection of garbage
Recycling: To recycle
The Ozone Hole: The ozone layer
Waste: Garbage
Toxic Waste: Toxic waste
Protection of Nature: The protection of nature
Environmental Protection: The protection of the environment
Global Warming: The planet’s warming
Endangered Species: Species in danger of extinction
Oil Spill: Black tide
Pollution: Pollution
Sustainable Development: Sustainable development
Ecologist: Ecologist
Environmentalists: Environmentalists
Endangered
Read MoreDNA, Evolution, and Genetics: Key Discoveries & Scientists
Key Discoveries in DNA, Evolution, and Genetics
The Polymerase Chain Reaction (PCR) technique, developed by Mullis, generates DNA copies.
Genetic Modification Techniques
- Recombinant DNA
- The Human Genome Project
Bioinformatics
Bioinformatics is used to analyze the human genome and understand evolution.
Stratigraphy and Ecology
Stratigraphy studies soil horizons, while ecology explores organism-environment relationships.
Early Theories of Life
- Aristotle: Proposed the scala naturae, a classification of organisms.
Odontogenic Infections: Causes, Types, and Treatment
Odontogenic Infections
Odontogenic infections are primarily caused by bacterial plaque. The oral cavity contains different layers of organisms, such as streptococci and lactobacilli. Food particles, initially loose on the teeth and mucous membranes, can be removed by rinsing. However, these particles can become trapped between teeth and impact their surfaces. At this stage, they can only be eliminated by mechanical methods, such as brushing and flossing.
There are two types of bacterial plaque:
- Supragingival
Venous Return and Cardiac Function: Key Factors
Factors Affecting Venous Return and Cardiac Function
Venous return is the amount of blood flowing from the veins into the right atrium each minute. Several factors influence the increase in venous return:
- Active Muscle Pumping: This is a major factor, especially at the calf level, where it acts as a peripheral heart. Proper assessment and treatment of muscular and osteoarticular disorders are crucial in managing venous disease.
- Thoracic Aspiration: This effect is relatively minor and is partially offset
Human Body Coordination: Nervous and Endocrine Systems
Coordination of the Human Body
The coordination of our body is achieved using two systems:
- The nervous system, which consists of:
- The central nervous system (brain and spinal cord) – receives and processes information to control body functions.
- The peripheral nervous system (composed of nerves that arrive at or depart from the central nervous system) – transforms messages from the central nervous system to organs and vice versa.
- The endocrine system
The Central Nervous System
Brain
The brain, cerebellum,
Read MoreHeart, Circulation, and Arterial System Anatomy
Nervous Control of Heart Contraction
This control is governed by the nervous system. Two groups of nerve fibers go to the heart:
- The vagus (parasympathetic) slows the heart rate.
- The sympathetic nerves accelerate the heart.
Vascularization of the Heart
Coronary Arteries
Right (CD); Left (core): circumflex (CX), anterior descending (DA).
Dominance Cardiac
Dominant coronary artery that gives the trunk of the posterior descending.
Veins
Sine coronary, anterior cardiac veins.
General Circulation
The blood is pumped
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