CHAPTER 1 Introduction to the Human body Objective H To identify and locate the principal body regions The principal body regions are the head, neck, trunk, extremity(two), and lower extremity rvey(two). The trunk(torso) is frequently divided into the 1. 18 State the regions that contain the brachium, cubital fossa, popliteal fossa, and axilla. Specific structures or clinically important areas within the principal regions have anatomical names ee fig. 1. 15). Learning the specific regional terminology provides a foundation for learning the names of underlying structures later on. Cervical Antenor thorax Deltoid (shoulder) Breast Axillary region Cubital fossa Elbow Antebrachium Abdomen Buttock Palmar surface of the hand Lower Popliteal fossa Ankle Plantar surtace Figure 1.15 The principal body regions.(a)An anterior view and(b)a posterior view. ctIve I To identify and to locate the principal body cavities and the organs within them. y时 ated membranes, As shown in fig. 1. 16. the posterior (dorsal) cavity includes the cra nd vertebral cavities(or vertebral canal)and contains the brain and spinal cord. The anterior (ventral) cavity includes the thoracic, abdominal, and pelvic cavities and contains visceral organs. The abdominal cavity and the pelvic cavity are frequently referred to collectively as the bdominopelvic cavity Body cavities serve to segregate organs and systems by function. The major por- tion of the nervous system occupies the posterior cavity, the principal organs of the respiratory and circu latory systems are in the thoracic cavity, the primary organs of digestion are in the abdominal cavity, and the reproductive organs are in the pelvic cavity.Objective H To identify and locate the principal body regions. The principal body regions are the head, neck, trunk, upper extremity (two), and lower extremity (two). The trunk (torso) is frequently divided into the thorax and abdomen. 1.18 State the regions that contain the brachium, cubital fossa, popliteal fossa, and axilla. Specific structures or clinically important areas within the principal regions have anatomical names (see fig. 1.15). Learning the specific regional terminology provides a foundation for learning the names of underlying structures later on. CHAPTER 1 Introduction to the Human Body 9 Survey Figure 1.15 The principal body regions. (a) An anterior view and (b) a posterior view. Objective I To identify and to locate the principal body cavities and the organs within them. Body cavities are confined spaces in which organs are protected, separated, and supported by associated membranes. As shown in fig. 1.16, the posterior (dorsal) cavity includes the cranial and vertebral cavities (or vertebral canal) and contains the brain and spinal cord. The anterior (ventral) cavity includes the thoracic, abdominal, and pelvic cavities and contains visceral organs. The abdominal cavity and the pelvic cavity are frequently referred to collectively as the abdominopelvic cavity. Body cavities serve to segregate organs and systems by function. The major por￾tion of the nervous system occupies the posterior cavity, the principal organs of the respiratory and circu￾latory systems are in the thoracic cavity, the primary organs of digestion are in the abdominal cavity, and the reproductive organs are in the pelvic cavity. Survey