Introduction to the Human Body


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Chemical composition of the body

Cellular anatomy is the study of cells and their components, which can be observed only with the use of special techniques and special instruments such as microscopes. Molecular anatomy often called molecular biology is the study of the smallest components of cells at the biochemical level.

The Human Body

Anatomy and physiology change remarkably between fertilization and birth. After birth, the rate of anatomic and physiologic changes slows, but childhood is still a time of remarkable growth and development see Physical Growth of Infants and Children. Some anatomic changes occur past adulthood, but the physiologic changes in the body's cells and organs are what contribute most to what we experience as aging see Changes in the Body With Aging.

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Common Health Topics. Blood globules synthesis in the bone marrow occurs within this skeletal system. Moreover, it stores minerals which are crucial for the physiology ionic homeostasis. This organ system acts as a junction within the skeletal system. Bones are the static support part of the body while the muscles provide the dynamic movement by moving the bones. This muscular system is the one that keeps the body in a straight position and allows the human to walk using only two points of support. Figure 4: Image of a part of the muscular system in junction with the skeletal system.

The nervous system regulates the entire human organism. It reacts instantaneously to all possible changes in the human body and its environment both internal and external [8]. By having all the information centralized, it can then activate all the glands, organs and muscles required for the body to answer to a signal. It is formed by the central nervous system : brain and spinal cord, and the peripherical nervous system : nerves and sensorial receptor. Figure 5: Image of the components of the nervous system of the human body.

The main organs inside this system are the glands which secrete all the hormones needed to regulate most of the chemical reactions of the organism.

Chapter 1. An Introduction to the Human Body – Anatomy and Physiology

The hormones role is to regulate the metabolism, behavior, and homeostasis of the body. The endocrine system also provides the cells with nutrients and it must be mentioned that disruptions of this system lead to major global dysfunctions [9]. Figure 6: Image of the different organs that compose the endocrine system in the male and female human body. The role of the cardiovascular system is to transport blood to each tissue and cell of the body.

Depending on the blood system arterial or venous it will contain oxygen, nutrients or it will eliminate CO2 and waste products. The heart acts as a very powerful pump through a succession of chambers atria and ventricles []. The lymphatic system works together with the circulatory and the cardiovascular systems. It contains lymphocytes and other white blood cells. Immune system uses the white blood cells to attack all the external organism that enters the body [12].

Figure 8: Image of the organs that composed the lymphatic and immune systems.

This organs system provides the oxygen that the human organism requires and removes the CO2 generated by the human body. It is composed by the nasal cavity, the pharynx, the larynx, the trachea, the lungs and all its subunits that ends with the alveolus. It works together with the cardiovascular system in the oxygen and CO2 switch that occurs at the alveolus level [13]. Figure 9: Image with the components of the respiratory system of the human body.

The aim of this organ system is to decompose the aliments into nutrients that will later be absorbed and distributed to reach all the cells of the human organism. It is also in charge of defecation of the waste products from the intestine via the rectum. The main organs are the oral cavity, the esophagus, the liver, the stomach, the small and gross intestines, and finally rectum and anus. Figure Image showing the organs involved in the digestive system of the human body.

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The main work performed by kidneys, urethra, ureters and bladder, which hare organs of the urinary system , is to eliminate waste products which cannot be removed by the digestive system. It also filters the blood to remove any kind of waste product. The urinary organs also have a function in the regulation of the blood volume and pressure.

As an example, it is involved in the blood pH regulation. Now Cherry Biotech is immersed in the Human-on-a-chip races, meaning that has to be considered as a complex interconnected entity and not as different independent parts. This is a unique website which will require a more modern browser to work!


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Please upgrade today! Our Blog Blood brain barrier microfluidic models [Brain on Chip] Drug screening: methods and application to oncology. Figure 1: Human body. The external layer, the integumentary organ system The integument forms the external cover of the organism and is composed of skin, hair, subcutaneous tissue, nails and of course associated glands: the sudoriparous and the sebaceous glands [3]. Figure 2: Scheme of the Integumentary organ system of the human body 1. The skeletal system, the internal scaffold The skeletal system is the system that contains all the bones.

Figure 3: Scheme of the Skeleton body system of the human body. The muscular system This organ system acts as a junction within the skeletal system.

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The nervous system, monitors and control the organism The nervous system regulates the entire human organism. The organism regulator: the endocrine system The main organs inside this system are the glands which secrete all the hormones needed to regulate most of the chemical reactions of the organism. The cardiovascular system: the engine of the human organism The role of the cardiovascular system is to transport blood to each tissue and cell of the body. Figure 7: Image of the main organs of the cardiovascular system.

The lymphatic and immune systems: the human organism defense The lymphatic system works together with the circulatory and the cardiovascular systems. The respiratory system This organs system provides the oxygen that the human organism requires and removes the CO2 generated by the human body.


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Introduction to the Human Body Introduction to the Human Body
Introduction to the Human Body Introduction to the Human Body
Introduction to the Human Body Introduction to the Human Body
Introduction to the Human Body Introduction to the Human Body
Introduction to the Human Body Introduction to the Human Body

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