![]() The hormones are responsible for processes like: It is composed of various glands that secrete hormones that control most body functions. It also plays a significant role in regulating water and body temperature, excretion of sweat, and vitamin D synthesis. The bones manufacture blood cells and store essential minerals like calcium.Īlso called the exocrine system, the integumentary system works to protect our inner organs from the environment. It's responsible for support, protection of vital organs, body posture, and movement. This is an organization of bones, muscles, and tendons that provide the body with its general framework. It's also responsible for controlling the blood's water and salt concentration and maintaining its PH at normal. This is the body's drainage mechanism, and it works to filter blood and remove waste metabolic products in the form of urine. It transmits signals from the brain to the rest of the body and vice versa through a network of nerves attached to the spinal cord. We perceive sensations and emotions, and respond to environmental changes, thanks to our nervous system. It's through reproduction that the continuity of the human species is guaranteed. ![]() Besides the production of sex cells, as in males, the female reproductive organs ensure the growth and development of the offspring. The reproductive organs in males and females differ. It is responsible for the creation of offspring in humans via sexual reproduction. The organs responsible for these functions are the following: It also ensures the removal of carbon dioxide from the body (exhalation). The respiratory system ensures the intake of oxygen (inhalation) and diffusion into the bloodstream for conversion into energy. Distribution is achieved by the blood, which is pumped through the blood vessels by the heart.Ĭonsequently, it is responsible for removing waste products from body cells.Ĭells require oxygen for energy production, without which the body will die within minutes. The circulatory system is the channel through which oxygen, nutrients, hormones, and other essential substances are distributed throughout the body. It also eliminates undigested food in the form of fecal matter. The blood transports the absorbed food to the cells for conversion into the energy we use for everyday activities. These organs work together to ensure food is broken down chemically for absorption into the bloodstream. Each system is an organization of various organs that function as a unit to sustain life.Īlso known as the gastrointestinal system (GI), the digestive system is composed of the following: The systems of the human body include the digestive, nervous, and other major structures that work interdependently to ensure proper functioning. These structures are categorized as cells, tissues, organs, and organ systems. The arms and legs that build off of the core are needed for movement and doing work.Ī human body, like a machine, is made of numerous structures that work together to perform a specific function. The center part of the body is often referred to as the core and houses most major organ systems. The top half of the body, the head, houses the control center organ of the body called the brain. The human body is made up of two-hundred and six bones working in concert with your three-hundred and twenty pairs of muscles. Did you know that you shed nearly ten pounds of skin cells every year? In your lifetime, your heart will beat just about three billion (with a B) times. The mouth produces nearly one liter of saliva every day. Our bodies are super cool! There are so many things going on in it that we still don't fully understand to this day.
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