______________ is a phenomenon that occurs when a smoldering fire has consumed most of the available oxygen inside an enclosure and suddenly explodes when additional oxygen is introduced

An airplane splint works well because:

a. it is waterproof and thus suitable for outdoor use. b. it can be moved to conform to the angle of any injured joint. c. its design provides traction. d. it is a rigid, fixed stabilizing unit.

Which type of impulse travels from the brain to the neuroeffector sites?

a. Afferent b. Reflex c. Ganglionic d. Efferent