Which body system is a collection of glands that produce hormones?
a. circulatory system
b. endocrine system
c. nervous system
d. respiratory system

Stan is a ninth grader involved in active sports. which list of food would provide him with a balanced diet

Which of the following is not considered a lymph node function? to house immune cells to transport lymph to filter blood to fight infection

Health-related fitness components include cardiorespiratory endurance, flexibility, and muscular strength. agility balance body composition reaction time