List the six fitness skills:

How is the structure of our circulatory system and respiratory system related to the function of both these systems?

Match each of the life stages below to the sentence that best describes it. an answer may be used more than once. young people establish an identity separate from that of their parents and turn to peers for support and acceptance; rejection by peers poses a major threat to adjustment. some common threats to adjustment include children leaving home, physical changes that require one to slow down, and failure to meet earlier goals. gross motor, fine motor, and language skills develop rapidly; changes in family schedule or child-care professional can create anxiety. those who are financially secure and reasonably healthy may enjoy retirement, travel, and socializing; others may find the loss of friends, a job, and financial instability frightening. children who have developed their physical, intellectual, and social skills are able to adjust to new situations, but children who lack basic skills can be threatened by school pressures and conflicts with others. new experiences and responsibilities include beginning college or a job, establishing a home, marrying, and starting a family. separation anxiety can occur when a child enters a new day care facility or school. the child may cry, claim to be sick, or beg to go home. a. early childhood b. middle childhood c. adolescence d. young adulthood e. middle adulthood f. senescence

Which of the following is the definition of ventilation as it relates to the respiratory system?