Human Digestive System: Anatomy and Function
Mouth
The mouth is divided into two parts: the oral vestibule, which is the space between the inside of the lips and the outer face of the teeth, and the oral cavity itself, which runs from the teeth internally to the entrance of the pharynx. The roof of the mouth is formed by the hard palate and soft palate, which is composed of muscle and covered by mucosa. In the midline of the soft palate, a small mass called the uvula projects downward. The mouth communicates with the pharynx through the fauces,
Read MoreCharacteristics and Pathogenicity of Bacterial Species
Gram-Positive Spore-Forming Bacillus
Gram-positive spore-forming Bacillus are aerobic, used for biological warfare. B. anthracis causes anthrax, and B. cereus causes food poisoning or intoxication.
Bacillus anthracis
Causes skin infections (malignant pustule), papules, vesicles, pustules, necrotic ulcers, and septicemia.
Bacillus cereus
Mobile, forms a swarming unlike B. anthracis. Causes food poisoning in two ways: related to fried rice (emetic) and with meats and sauces (diarrhea). It can also cause
Read MorePreventing Birth Defects: Understanding Teratogenic Factors
Preventing Birth Defects: Understanding Teratogenic Factors
Source: INTERPSIQUIS. 2004
Author: Iris. M. Motta, BA in Psychology
Professor JTP, Universidad Argentina John F. Kennedy
Secretary of Neuropsychology Postgraduate Course in Dynamics of the University Kennedy
Company Secretary of Biopsychopedagogy, Argentina
Email: imotta@fibertel.com.ar
Keywords: Teratogenic Factors, Prevention, Defects in the Developing Embryo
Summary
The biopsychosocial health of a person rests largely on proper embryonic and
Essential Nutrients and Human Digestive, Respiratory Systems
Essential Nutrients and Human Body Function
Food products are natural or processed substances that provide what our cells need to live.
Inorganic Substances
- Water: It is the most abundant compound in living organisms and the environment in which life develops from cells.
- Mineral salts: These are found in bones and teeth. They are also all salts dissolved in body fluids.
Organic Substances
- Carbohydrates: The simplest, such as glucose and maltose, can taste sweet and are known as sugars. Glucose is a sugar
Cell Biology: Structure, Function, and Metabolism
The Cell: Structural and Functional Unit of Life
The cell is the structural and functional unit of living things because all living beings are formed by one or more cells and because it is the smallest unit of matter that can carry out the basic functions of living things. Each cell is derived from another existing cell.
The Cell from a Structural Viewpoint
Cells can be grouped into:
- Eukaryotes: Have DNA in a nucleus separated from the rest of the cytoplasm by a double membrane. Animal and plant cells
Understanding Human Health: Diseases, Immunity, and Healthy Lifestyles
Occasionally, our body is altered, or we experience an illness.
Health
A person is healthy when all organs are fully functional and they feel good physically, mentally, and socially. Health is a quality where the body and all its systems perform their duties properly.
Disease
At times, the activity of the body or any of its organs is altered, leading to malfunctions. This is what we know as disease. A disease is a continuing alteration in the functioning of the body.
1.1 Types of Diseases
Infectious diseases
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