How do the mouth, nose, throat, and lungs fight against pathogens?

Which type of nerve creates a 'mental map" of the relative positioning of the body at any given point in time?

Practice or pre-exercise theories of play pose the idea that a. play provides children with an opportunity to practice adult activities. b. play is necessary to reenergize human cognition. c. children have too much energy and play will rid them of that energy. d. children are the link between animals and human beings.

Exercise equipment compensates for acting irresponsibly are disregarding the rules of physical activity