Introduction As mentioned, human anatomy is the study of the structures of the human body. An understanding of anatomy is key to Understanding how the body is constructed and how the body operates. ...

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Introduction
As mentioned, human anatomy is the study of the structures of the human body. An understanding of anatomy is key to Understanding how the body is constructed and how the body operates. Physiology is the study of normal function within living creatures. It is a sub-section of biology, covering a range of topics that include organs, anatomy, cells, biological compounds, and how they all interact to make life possible. From ancient theories to molecular laboratory techniques, physiological research has shaped our understanding of the components of our body, how they communicate, and how they keep us alive. The study of physiology is, in a sense, the study of life. It asks questions about the internal workings of organisms and how they interact with the world around them. Physiology tests how organs and systems within the body work, how they communicate, and how they combine their efforts to make conditions favorable for survival.
Define and describe the six levels of organization of the body and explain the eleven major organs systems in the body.
The human body has 6 main levels of structural organization. The organization of the body often is discussed in terms of six distinct levels of increasing complexity, from the smallest chemical building blocks to a unique human organism. These include the chemical, cellular, tissue, organ, organ system and organismal level ("1.2 Structural Organization of the Human Body – Anatomy & Physiology," n.d.).
Chemical level– is the simplest level within the structural hierarchy. The chemical level includes the tiniest building blocks of matter, atoms, which combine to form molecules, like water. In turn, molecules combine to form organelles, the internal organs of a cell.
Cellular level– the cellular level is made up of the smallest unit of living matter, the cell. Individual cells may have some common functions but vary widely in size and shape. Each type of cells carries out a set of unique tasks within the human body.
Tissue level– Tissues are groups of similar cells that have a common function. A tissue must contain two different types of cells. The four basic tissue types in humans include epithelium, connective, muscle, and nervous tissue. Each tissue has a characteristic role within the human body
Organ level– an organ is a structure composed of at least two different tissue types that perform a specific function within the body. Examples include the brain, stomach, and liver. Complex functions begin to emerge at this level.
Organ system level– One or more organs work in unison to accomplish a common purpose. For instance, the heart and blood vessels work together and circulate blood throughout the body to provide oxygen and nutrients to cells. Besides the cardiovascular system, the other organ systems of the body are the integumentary, skeletal, nervous, muscular, endocrine, respiratory, lymphatic, digestive, urinary, and reproductive systems.
Organismal level– Th