CFR›Title 49›Subtitle B›Chapter V›Part 572›Subpart C ContainsSections 572.15–572.21CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart C—3-Year-Old Child Sections 572.15 § 572.15 General description. 572.16 § 572.16 Head. 572.17 § 572.17 Neck. 572.18 § 572.18 Thorax. 572.19 § 572.19 Lumbar spine, abdomen and pelvis. 572.20 § 572.20 Limbs. 572.21 § 572.21 Test conditions and instrumentation. Source44 FR 76530, Dec. 27, 1979, unless otherwise noted. Previous B Subpart B—50th Percentile Male Next D Subpart D—6-Month-Old Infant