Advanced Cardiac Life Support. A training course in resuscitation techniques for health care providers offered by the American Heart Association. See: life support for illus. ADVANCED CARDIAC LIFE SUPPORT: Mannequin used for training. advanced cardiac life support Abbreviation: ACLS. ADVANCED CARDIAC LIFE SUPPORT: Mannequin used for training. 1.
The best stones for making arrowheads include flint, chert, obsidian, jasper, quartzite and other stones that are somewhat brittle and have a fine-grained, uniform texture that is free of cracks, fissures, and fractures. Glass and porcelain can also be used. You can also tap the stone and listen to the pitch.
Arrow - Size. 1  Arrow sizes vary greatly across cultures, ranging from eighteen inches to five feet (45 cm to 150 cm). [3] 2  The shaft is the primary structural element of the arrow, to which the other components are attached. 3  The stiffness of the shaft is known as its spine, referring to how little the shaft bends when compressed.