Sisäsijat

Sisäsijat, also known as internal organs, are the organs located within the body's internal environment. They are essential for the body's functioning and include a variety of structures that perform specific roles. The primary internal organs are the heart, lungs, liver, stomach, kidneys, spleen, and pancreas. Each of these organs has a unique function, such as pumping blood, filtering waste, or producing hormones.

The heart is a muscular organ that pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products. The lungs are responsible for the exchange of oxygen and carbon dioxide, facilitating respiration. The liver plays a crucial role in metabolism, detoxification, and the production of bile. The stomach aids in digestion by secreting digestive enzymes and acids. The kidneys filter waste products from the blood, producing urine, and regulate fluid balance and electrolyte levels. The spleen filters blood, stores blood cells, and produces certain immune cells. The pancreas produces hormones that regulate blood sugar levels and digestive enzymes.

In addition to these primary organs, there are other internal organs that support their functions, such as the gallbladder, which stores bile produced by the liver, and the bladder, which stores urine produced by the kidneys. Internal organs are protected by the body's skeletal system and are supported by connective tissues and fluids. They are supplied with nutrients and oxygen through the circulatory system and are protected from infection and damage by the immune system. Proper functioning of internal organs is vital for overall health and well-being.