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After the adolescent growth spurt, sex differences in muscle mass result more from differences in arm musculature than leg musculature.

Which of the following are true regarding the development of balance during childhood? Select all that apply.

Which of the following is a characteristic of children’s early attempts to catch? Select all that apply. 

There is a trend of improved performance on balance tasks throughout childhood and adolescence, and the pattern of improvement is the same for all types of balance tasks.

Infants demonstrate some level of visual-auditory integration early in the first year of life.

The conduction speed of nerve impulses is aided by the development of ____________ cells that wrap themselves around the axons.

The developmental transition for trunk action in sidearm striking is (1) block rotation followed by (2) differentiated rotation.

Extrinsic (external) factors are those influences that have only a negative effect on growth and development.

Because the brain attains 80% of its adult size in the first few postnatal years, it is particularly susceptible to extrinsic factors such as poor nutrition or a physical blow during this time.

Which of the following is characteristic of proficient catching? Select all that apply.