Between the ribs is intercostal space which contains blood vessels, muscles and intercostal nerves. These emerge between the vertebrae. When false movements, efforts, shock or coughing important muscles can be stretched, crumpled or torn.
For substances that are existing, the Inventory can be used to determine if there are restrictions on manufacture or use under the TSCA. There are approximately 80,000 chemical substances (as defined in Section 3 of the TSCA) on the Inventory at this time.
TSCA Section 8(b) directs EPA to compile, keep current, and publish a list of each chemical substance which is manufactured or processed in the United States.. This list is known as the TSCA Chemical Substance Inventory (TSCA Inventory). EPA compiled the initial TSCA Inventory in 1977. The TSCA Inventory is continually updated by the addition of chemical substances for which a premanufacture notice (PMN) and subsequent notice of commencement (NOC) have been submitted.