BIO 11 Lecture Notes - Lecture 23: Internal Intercostal Muscles, External Intercostal Muscles, Thoracic Inlet
Document Summary
Diaphragm, intercostal muscles & accessory muscles of ventilation. Does not cause movement at a joint. Cranial cavity -- located within the skull and protects the brain. Vertebral or spinal cavity found within the vertebral column and protects the spinal cord. Both cavities are continuous with one another and filled with csf. Thoracic (superior) and abdominopelvic (inferior) cavities - separated by diaphragm. Houses heart, great blood vessels, trachea and oesophagus - not within serous membrane. Includes organs from digestive, lymphatic and urinary systems. Some organs located in another sub-cavity within serous membranes - peritoneal cavity. Contains organs of reproductive, digestive and urinary systems. Single continuous layer of tissue that folds over on itself to enclose a single place. Serous fluid produced by cells of membrane watery, slippery liquid that lubricates organ prevents friction as the organ moves against adjacent structures - between two layers of membrane. Serous membranes surround certain organs (heart, lungs, intestines)
