The Human Pathophysiology
The HUMAN BODY PLAN:
STUDY of ANATOMY and PHYSIOLOGY
THE HUMAN BODY PLAN
The human body begins to take shape during the earliest stages of embryonic development. While the embryo is a tiny hallow ball of dividing cells, it begins forming the tissues and organs that compose the human body. By the end of its third week, human embryo has bilateral symmetry (a body plan in which the left and right sides mirror each other) and is developing vertebrate characteristics that will support an upright body.
OBJECTIVES: Define anatomy and physiology; explain how the parts and functions relate to one another. List and describe the major characteristics of life. Define homeostasis, and explain its importance to survival. Describe a homeostatic mechanism. …show more content…
The human body is a precisely structured container of chemical reactions.
2. Biology is the study of living things including the study of the human body.
3. The study of body structure which includes size, shape, composition, and perhaps even coloration, is called ANATOMY.
4. The study of how the body functions is called PHYSIOLOGY.
LEVELS OF STRUCTURAL ORGANIZATION
1. Chemical Level A. The chemicals that make up the body may be divided into TWO major categories: INORGANIC AND ORGANIC.
a) INORGANIC CHEMICALS are usually simple molecules made up of one or more elements other than CARBON.
Examples: water, oxygen, carbon dioxide (an exception), and minerals such as iron, calcium, and sodium.
b) ORGANIC CHEMICALS are often very complex and always contain the elements CARBON AND HYDROGEN.
Examples: carbohydrates, fats, proteins, and nucleic acids.
2. Cellular Level A. Cells are the smallest unit of structure and function. B. Cells are the smallest living subunits of a multicellular organism such as a human being. C. There are many different types of cells; each is made up of chemicals and carries out specific chemical reactions.
3. Tissue
STUDY of ANATOMY and PHYSIOLOGY
THE HUMAN BODY PLAN
The human body begins to take shape during the earliest stages of embryonic development. While the embryo is a tiny hallow ball of dividing cells, it begins forming the tissues and organs that compose the human body. By the end of its third week, human embryo has bilateral symmetry (a body plan in which the left and right sides mirror each other) and is developing vertebrate characteristics that will support an upright body.
OBJECTIVES: Define anatomy and physiology; explain how the parts and functions relate to one another. List and describe the major characteristics of life. Define homeostasis, and explain its importance to survival. Describe a homeostatic mechanism. …show more content…
The human body is a precisely structured container of chemical reactions.
2. Biology is the study of living things including the study of the human body.
3. The study of body structure which includes size, shape, composition, and perhaps even coloration, is called ANATOMY.
4. The study of how the body functions is called PHYSIOLOGY.
LEVELS OF STRUCTURAL ORGANIZATION
1. Chemical Level A. The chemicals that make up the body may be divided into TWO major categories: INORGANIC AND ORGANIC.
a) INORGANIC CHEMICALS are usually simple molecules made up of one or more elements other than CARBON.
Examples: water, oxygen, carbon dioxide (an exception), and minerals such as iron, calcium, and sodium.
b) ORGANIC CHEMICALS are often very complex and always contain the elements CARBON AND HYDROGEN.
Examples: carbohydrates, fats, proteins, and nucleic acids.
2. Cellular Level A. Cells are the smallest unit of structure and function. B. Cells are the smallest living subunits of a multicellular organism such as a human being. C. There are many different types of cells; each is made up of chemicals and carries out specific chemical reactions.
3. Tissue