Right brain-left brain functions The brain consists of two hemispheres, right and left. Brain hemispheres provide the general right and left symmetry of the body against the same appearance of each other. The bundles formed by nerve cells connect these two hemispheres. Research shows that the functions performed by these two hemispheres are different. We can list these differences as follows; • The left hemisphere helps us to perceive time, and the right hemisphere to perceive space. • Parts of the whole are perceived by the left hemisphere and the whole by the right hemisphere. • The things that are lined up one after another are perceived with left, and synchronous ones with right. • The left hemisphere deals with verbal skills and the right hemisphere deals with skills. • Logical and analytical perception is guided by the left hemisphere and the heuristic perception by the right hemisphere. • While the left hemisphere controls the right side of the body and the right area of vision, the right hemisphere controls the left side of the body and the left area of vision. As can be understood, all these skills complement each other. Analytical thinking develops when working for verbal skills, or intuition when painting begins. Sports offers different environments to develop and use right and left brain skills. Various forms of visualization with right brain skill can benefit sporting performance. On the other hand, it is the result of misuse of the right brain (Syer & Connolly, 1998) to constantly imagine negative performance without any purpose, to dive into the day's dream at the team's tactical meeting (Syer & Connolly, 1998). When our education system is analyzed, we see more efforts to develop the skills and abilities of the left hemisphere of the brain. However, it is possible for the individual to perform well in every subject by developing skills in both hemispheres of the brain. Domestic (endocrine) system It is not only our nervous system's duty to control and regulate the functioning of our body's tissues and organs. The control and regulation of the functioning of our organs and systems usually occurs as a result of our nervous system and internal glands working together. Our internal glands perform the monitoring and regulation tasks by producing special secretions called hormones. The hormones produced by the internal glands are carried to the organs, where they regulate, through blood. While our internal glands perform their supervisory and regulatory functions in a slow, long time and continuously, our nervous system works very quickly and in a short time. Each hormone is produced by different organs and has different effects. In the table below, some of our internal glands and hormones secreted by them and the functions of these hormones are indicated.
Pituitary gland The pituitary gland, which is one of the important internal glands, is partly an extension of the brain and is located just below the hypothalamus and produces a large number of hormones. The pituitary gland handles the secretion of many hormones in the organism and regulates the work of other endocrine glands with their secretions. For this reason, the pituitary gland is considered the orchestra conductor of the endocrine system and secretes especially hormones related to growth and reproduction. One of the most important hormones produced by the pituitary gland is antidiuretic hormone (ADH). This hormone is produced in the hypothalamus and stored in the pituitary gland. The antidiuretic hormone affects the kidneys, and under its influence, the kidneys reduce the amount of water that is taken from the internal organs of the body and transferred to the bladder. As the thirst in the body increases, the amount of ADH increases. An increase in ADH release is observed in sports activities. Water and sodium loss is high especially in long exercises. The reason for the increase in ADH release depends on the reduction of water loss in exercise (GĂźnay, 2001). Under normal conditions, a limited amount of ADH enters the blood. If the amount of water in the body increases, the amount of ADH delivered to the blood decreases or stops completely. Under these conditions, the kidneys transfer large amounts of water to the bladder. Ultimately, ADH protects the amount of water in the body, ensuring that the internal organs and blood function properly.
