The frontal lobe is the last part of the brain to develop this typically occurs when an individual is 20 years old or older. How might this fact affect the actions and behaviors of those not yet in their 20s?

When you have proper posture, your back is arched. a. true b. false

What should you not do when doing abdominal workouts? a. keep your chin off your chest b. keep your head aligned with the spine c. put pressure on your neck d. all of the above

Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive