Ms. Smith told her students to do 30 jumping jacks without stopping. When everyone had completed the jumping jacks, she asked the students to look around and observe each other. She said, "What do you notice about each other that is different from before you did the jumping jacks?" The changes that the students observed, rapid breathing and sweating, would be classified as a to a change in a system.
A) limit
B) response
C) stimulus
D) feedback mechanism

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.