Position of the heart
The heart is a muscle about the size of a person's fist in the middle of the chest, tilted toward the left side, just under the sternum in a place called the mediastinum.
Respiratory system The function of the respiratory system is to transport air into the lungs and to facilitate the diffusion of Oxygen into the stream. Its also receives waste Carbon Dioxide from the blood and exhales it. The respiratory system comprises of the nose, mouth, throat, larynx, trachea, bronchi and lungs. Oxygen is required by cells in the body to allow various metabolic reactions to take place and to produce energy and is therefore essential to life. The respiratory system may be defined as the organs and tissues through which air is passed into and out of the body to allow the necessary gaseous exchanges to take place.
Nervous system The nervous system made up of your brain, your spinal cord, and an enormous network of nerves that thread throughout your body, it's the control centre for your entire body. The brain use information it receives from your nerves to coordinate all of your actions and reactions. The nervous system includes:
- Brain
- Spinal Cord
- Nerves/neutrons
Endocrine system the glands of the endocrine system and the hormones they release influence almost every cell, organ, and function of our bodies. The endocrine system is instrumental in regulating mood, growth and development, tissue function, and metabolism, as well as sexual function and reproductive processes. The major glands that make up the human endocrine system include the: parathyroid’s (controls amount of calcium in blood), adrenal glands (controls emergency action), pineal (controls wake and sleep patterns), reproductive glands (which include the ovaries and testes), hypothalamus (stimulates pituitary, controls water balance), pituitary gland (stimulates other glands), thyroid (control heat and energy production), pancreas (controls blood sugar), thymus (helps fight infection).
Digestive system The primary function of the digestive system is to break down the food we eat into smaller parts so the body can use them to build and nourish cells and provide energy. The digestive system is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. It is made up of the mouth including the teeth (saliva begins to breakdown food), jaws, tongue and salivary glands, oesophagus (transport food to the stomach), stomach (digests food into chime), liver (with digestion of fats), small intestine (digestion and absorption of nutrients), large intestine (absorption of water and formulation of faeces), rectum and anus.
Renal system Each part of the urinary system performs important functions - both for the efficient operation of the urinary system itself, and also therefore, for the body as a whole. The renal system main function is to eliminate the waste products produces as a result of metabolism. The amount of water in the body must be balanced against the amount of water which we drink and the amount we lose in urine and sweat. The renal system includes kidneys, ureters, bladder and uretra.
Reproductive system The primary role of the reproductive system – whether male or female – is to create a new generation and further propagate human life. The male reproductive system is required to produce and supply the sperm to fertilize the egg. The sperm and egg contain the genetic material of the parents. The female reproductive system is the organ system in girls and women responsible for maintaining the reproductive cycle. The organs and tissues in the system have specific roles, such as producing eggs (ovaries) and carrying a developing fetus (uterus). The female structure of reproductive system include: ovaries, fallopian tubes, uterus, cervix, and vagina. The male structure include: testes and penis.
Musculoskeletal system
Lymphatic system
Immune system
Conclusion
