Human body of different cavities, separated areas which house different organ systems. The brain and central nervous system reside in an area protected from the rest of the body by the blood brain barrier. The lungs sit in the pleural cavity. The intestines, liver, and spleen sit in the abdominal cavity Height, weight, shape and other body proportions vary individually and with age and sex. Body shape is influenced by the distribution of muscle and fat tissue. Human physiology is the study of how the human body functions. This includes the mechanical, physical, bioelectrical, and biochemical functions of humans in good health,
Theology of the Body Theology of the Body Theology of the Body is the topic of a series of 129 lectures given by Pope John Paul II during his Wednesday audiences in St. Peter's Square and the Paul VI Audience Hall between September 5, 1979 and November 28, 1984. It constitutes an analysis on human sexuality. The complete addresses were later compiled and expanded upon in many of John Paul's encyclicals, letters, and exhortations. In "Theology of the Body", John Paul II intends to establish an adequate anthropology in which the human body reveals God. He examines man and woman before the Fall, after