BODY CAVITIES AND THORACIC DUCT WITH DIAGRAMS

BODY CAVITIES AND THORACIC DUCT PPT OF ANATOMY

1. NAME :- TANIA ISLAM. STUDENT CODE:- BWU/BCT/24/031. DEPATMENT:- ALLIED HEALTH SCIENCE. PROGRAMME:- BSC. CCT. COURSE NAME:- HUMAN ANATOMY. COURSE CODE:- BCCTC101. TOPIC:- BODY CAVITIES AND THORACIC DUCT

2. Cavities of the Body and the Thoracic Duct Overview of Anatomy and Functions

3. Introduction • Definition of Body Cavities • Importance in anatomy and physiology • Main focus areas: Types of body cavities, Overview of the thoracic duct

4. Major Body Cavities • Dorsal Cavity: Cranial and Vertebral • Ventral Cavity: Thoracic an 1. Dorsal Cavity Location: Situated along the back (posterior) side of the body. Subdivisions: Cranial Cavity: Contains the brain and is enclosed by the skull. Vertebral (Spinal) Cavity: Encloses the spinal cord and is protected by the vertebrae. Function: Protects the central nervous system (brain and spinal cord).

5. The Abdominopelvic Cavity • Subdivisions: - Abdominal: Digestive organs Abdominopelvic Cavity: Divided into: Abdominal Cavity: Houses digestive organs such as the stomach, liver, intestines, and kidneys. Pelvic Cavity: Contains the bladder, reproductive organs, and the rectum. Function: Provides space and protection for internal organs and allows for their movement (e.g., breathing, digestion. ).

6. Functions of Body Cavities • Protection of organs • Allow organ movement • Separation and containment of organs .

7. The Thoracic Cavity • Location: Upper ventral cavity • Components: Heart, Lungs, Mediastinum Subdivisions: Thoracic Cavity: Located in the chest. Contains the heart (pericardial cavity), lungs (pleural cavities), and mediastinum (region between the lungs). Location: Positioned at the front (anterior) side of the body.

8. The Thoracic Duct The thoracic duct is the largest lymphatic vessel in the body. It carries lymph from most of the body (except the right side of the head, neck, and chest) into the venous circulation. lymph Drainage: Drains lymph from the entire body except: Right side of the head and neck. Right upper limb. Right thorax (drained by the right lymphatic duct). Transport: Returns filtered lymph, including fats and proteins absorbed in the digestive system, to the bloodstream. Immune Function: Transports immune cells, aiding in the body’s defense mechanisms.

9. Importance of the Thoracic Duct • Role in lymphatic system: - Transport lymph, fats, and immune cells - Maintain fluid balance - Remove waste • Clinical significance: Disorders like chylothorax

10. Disorders Related to Cavities and Thoracic Duct • Pericarditis: Inflammation of pericardium • Pleural effusion: Fluid in pleural cavity • Thoracic duct injury or blockage

11. Thank you