General functions of the integumentory system: Protection, sensation, temperature regulation, vitamin D production, Excretion: 3 Layers of skin: Epidermis- top, superficial, epithelial Dermis- deep layer of connective tissue Subcutaneous tissue- not part of skin, loose connective tissue that connects to underlying layers From deepest to most superficial, name and describe the five strata of epidermis
North American X-15. If the type of engine is not limited to jet-powered engines, then the North American X-15 is the fastest airplane. Powered by a rocket engine, the X-15 is said to have reached a speed of 4,520 miles (7,274 km) per hour. Like the X-43, it is launched mid-air from a B-52.
A question we often hear. The topic âWhich is the Fastest Aircraft in the Worldâ is not that simple. Some count the fastest vehicle, the Apollo module as record holder. The command module had Top Speeds around Mach 30, that is around 36,750 km/h or over 22,830 mph. But the Apollo canât be counted as Aircraft.