Physiology And Homeostatsis
INTRODUCTION TO PHYSIOLOGY AND HOMEOSTATIS PHYSIOLOGY
1.1 Intro to Physiology
Physiology: the study of the functions of living things, how the human body works
Two approaches explain the events that occur in body -purpose of the body process - mechanism in which the process occurs
Physiologists view the body as a machine whose mechanisms of action can explained in terms of cause and effect sequences of physical and chemical processes.
Physiology is closely related to anatomy: the study of the structure of the body.
The nutrient –absorbing intestinal cells have a multitude of fingerlike projections in contact with the digested food. Based on knowledge of structure –function relationships, explain the functional advantage of this structural feature.
1.2 Levels of organization in the body
All matter is made up of atoms, the smallest building blocks of matter
The most common atoms in the body are oxygen, carbon, hydrogen, and nitrogen, making up approximately 96% of the body.
The atoms and a few others combine to form the molecules of life, such as proteins carbohydrates, fats and nucleic acids, even DNA
THE CELL: the fundamental unit of both structure and function in a living being is the smallest unit capable of carrying out the processes associated with life.
Plasma Membrane: extremely thin, oily barrier that encloses the contents of a cell and controls movement of materials into and out of the cell
-the cell’s interior contains a combination of atoms and molecules that differs from the mixture of chemicals in the environment surrounding the cell.
Organisms: independent living things, simplest forms of independent life are single-celled organisms
Multicellular organisms are more complex organisms, having many kinds of cells, such as muscle cells, nerve cells, and gland cells.
During the development of multicellular organisms, each cell differentiates or becomes specialized to carry out a particular function; body is made up
1.1 Intro to Physiology
Physiology: the study of the functions of living things, how the human body works
Two approaches explain the events that occur in body -purpose of the body process - mechanism in which the process occurs
Physiologists view the body as a machine whose mechanisms of action can explained in terms of cause and effect sequences of physical and chemical processes.
Physiology is closely related to anatomy: the study of the structure of the body.
The nutrient –absorbing intestinal cells have a multitude of fingerlike projections in contact with the digested food. Based on knowledge of structure –function relationships, explain the functional advantage of this structural feature.
1.2 Levels of organization in the body
All matter is made up of atoms, the smallest building blocks of matter
The most common atoms in the body are oxygen, carbon, hydrogen, and nitrogen, making up approximately 96% of the body.
The atoms and a few others combine to form the molecules of life, such as proteins carbohydrates, fats and nucleic acids, even DNA
THE CELL: the fundamental unit of both structure and function in a living being is the smallest unit capable of carrying out the processes associated with life.
Plasma Membrane: extremely thin, oily barrier that encloses the contents of a cell and controls movement of materials into and out of the cell
-the cell’s interior contains a combination of atoms and molecules that differs from the mixture of chemicals in the environment surrounding the cell.
Organisms: independent living things, simplest forms of independent life are single-celled organisms
Multicellular organisms are more complex organisms, having many kinds of cells, such as muscle cells, nerve cells, and gland cells.
During the development of multicellular organisms, each cell differentiates or becomes specialized to carry out a particular function; body is made up