Body Organization Part II

1. Body OrganizationPart II BIO 201 Kelly Trainor, PhD

2. Objectives • Describe the anatomical position. • Use correct anatomical terminology to describe body directions, body regions, and body planes or sections. • Locate and name the major body cavities and their subdivisions and associated membranes, and list the major organs contained within them. • Name the four quadrants or nine regions of the abdominopelvic cavity and list the organs they contain.

3. Regional Terms - Anterior

4. Regional Terms - Posterior

5. Directional Terms

6. Directional Terms

7. Directional Terms

8. Body Planes and Sections • A sagittal section divides the body (or organ) into left and right parts • A median, or midsagittal, section divides the body (or organ) into equal left and right parts • A frontal section divides the body (or organ) into anterior and posterior parts • A transverse, or cross, section divides the body (or organ) into superior and inferior parts

9. Body Planes and Sections

10. Body Cavities • Dorsal body cavity • Cranial cavity houses the brain • Spinal cavity houses the spinal cord • Ventral body cavity • Thoracic cavity houses heart, lungs and others • Abdominopelvic cavity houses digestive system and most urinary system organs

11. Body Cavities • Thoracic cavity subdivisions: • Two pleural cavities • Each houses a lung • Mediastinum • Contains pericardial cavity • Surrounds thoracic organs • Pericardial cavity • Encloses heart

12. Serous Membranes • Thin, double-layered membrane separated by serous fluid • Parietal serosa lines internal body walls • Visceral serosa covers the internal organs

13. Abdominopelvic Major Organs

14. Abdominopelvic Regions

15. Body Organization Part II Quiz

16. Activities • Regional Terms (Anterior) – Labeling • Regional Terms (Posterior) – Labeling • Body Cavities – Labeling • Body Cavities – Memory Game