When do the secondary sex characteristics appear?

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

Which of the following describes typical bone growth?

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

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

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

Recent research has shown that children can be at the most advanced levels of upper arm and forearm action before they routinely use trunk rotation.

Growth in the fetal stage is by hyperplasia (an increase in the absolute number of cells) and by ____________ (an increase in the relative size of an individual cell).

Bimanual reaching and manipulation takes place when an object is too large for one hand.

Which of the following is characteristic of proficient punting?