IntroductionA good health means a proper balance between the physical and mental conditions. Based on the influences of external and internal environment and the individual tendencies, health differs from one person to another. A thorough medical check is required to be done for all the crew members who join the vessel, to know their health conditions. The general health status should always be good because life at sea is an away from all, unique work place. Proper knowledge on the direct and indirect impact of carrying LNG onboard on health of the crew members is very essential.
Anatomy and PhysiologyAnatomy is the study of the bodily structures of humans and other living organisms. Physiology is the study of various functions of the body. The CellThe independent microscopic unit of the body is called a cell. It is the basic building block for human body and other living organisms. The chemical reactions that occur in the cells are the cause for all the functional processes of the body. The cells present in various tissues and organs cooperate in fulfilling their duties. The water content in the cell comprises of 70% of the total content. Other contents like carbohydrates, proteins and inorganic materials are also present in the cell. Another thing about the cell is that they have a basic structure and certain basic qualities. Every part of a cell is aligned to do a particular function. All human beings use nutrients for getting energy. The most essential source of energy in the cell is glucose. Thus it is necessary to take nutrient rich food to gain energy.
TissueThe tissues are formed by the look-alike cells. Epithelial tissue is a kind of tissue which covers the body’s surfaces, channels and cavity. The tissue network is formed by the support tissue and connective tissue. Other different kinds of tissues are nerve tissue, osseous tissue, muscular tissue etc. The chemical signals control the cooperation of the cells. The two types of chemical signals are hormone signals and nerve signals. These two signals work together for appropriate reactions. The activities of internal organs are controlled by the hormone signals and the activity of glands and muscles are controlled by the nerve signals. These two signals are important for our survival.
The composition of tissue fluid is kept at a constant level mainly by the cooperation of various organ systems. The tissue fluid is renewed by the blood. The blood circulates throughout the body all the time. The surplus tissue fluid is drained by the lymph artery.
Respiratory OrgansThe process of exchange of gases between the lungs and the blood arteries is called respiration. Oxygen in the air is absorbed by the respiratory organs and the blood helps in sending the oxygen to the cells of the body. The carbon dioxide produced by the cells is taken out of the body. The two main respiratory organs are lungs and bronchia.
The SkinThe skin is the largest breathing organ of the human body and it also protects all the internal organs.
The following media explains about the skin
The Immune SystemThe system which protects the body from diseases and infections from outside is called the immune system. This system is called a defense system where it provides some harmless infective agents to fight against the infective organisms from outside. This system also helps in fighting against the internal changes in cells.
Thoughts and AttitudeGood health not only includes physical body conditions but also positive thoughts and attitude. The crew members face various types of risks onboard. These risks have either direct or indirect influence on their health. Apart from the internal influence, the external influence present in the atmosphere may also affect health.
