The body works in surprising ways like a finely tuned machine. All organ systems within the body depend on each other for survival in some way or form at all times. Cherif et al., (2010) state that the body depends on the precise action of each organ to maintain the physical, mental and emotional health of a human being. Furthermore, homeostasis, the regulation of body temperature, plays a survival role in maintaining bodily functions. The integumentary system (skin) is the largest and most important part of the body. The skin is just one of the organ systems we will discuss (Thibodeau & Patton, 2008). The body is expected to perform specific tasks at specific times; organ systems as a whole, the most important organ system, the integumentary system, and homeostasis, are what allows the body to perform on demand. Some of the organ systems of the body are the integumentary system, skeletal system, muscular system, nervous system, senses and endocrine system. They are all equally important for the survival of the human body. The first organ system we will talk about is the integumentary system. The main purpose of the integumentary system is protection from infections, harmful rays of the sun and cuts. Furthermore, the organs present in the integumentary system are the skin, hair, nails, sensory receptors, sweat glands, and sebaceous glands. The second organ system is the skeletal system. The skeletal system is composed of a total of 206 bones, 80 bones in the axial skeleton, i.e. the trunk and head, and 126 bones in the appendicular skeleton, i.e. the upper and lower extremities, and the pelvis area. Furthermore, the main tasks of the skeletal system are posture, helping muscles move and producing heat. The four organs… in the center of the card… the role they play in homeostasis is fully understood. Without the exact functions of the body, life would not exist (Thibodeau & Patton, 2008). Works Cited Cherif, A.H., Jedlicka, D., Al-Arabi, A., Aron, R., & Verma, S. (2010). Effectively understanding the organs of the human body: A role-playing activity for deep learning. American Biology Teacher, 72(7), 447-450. doi:10.1525/abt.2010.72.7.11. Retrieved from the Academic Search Premier database. Homeostasis - Negative Feedback - Blood, Body, Internals, Conditions, Receptors, and Change http://science.jrank.org/pages/3364/Homeostasis-Negative-feedback.html#ixzz1GKOHpL9mLaFleur Brooks, M (2010). Exploring Medical Language, A Student - Directed Approach, 7th edition, St. Louis: Mosby Elsevier. Thibodeau, G & Patton, K. (2008) Structure and function for the body. 13th edition. St. Louis: Mosby Elsevier.