Fetal head - displaying bones, fontanelles, and average measurements at 9 months of gestation
The fontanelles (or fontanels) of the fetal skull are critical anatomical features during vaginal birth. These allow the cranial bones to move around such that the newborn often resembles a Conehead right after birth - but the look is a good thing! The funky look usually goes away within the first day or two, and this weird pointy head is the primary reason that mom could push that watermelon-sized baby through a pelvic opening that could ordinarily not even accommodate a large mango.
The mastoid, sphenoidal, and posterior fontanelle generally disappear by six months of age, while the larger anterior fontanelle can take up to two years to grow into bone. A sunken fontanelle is one of the ways to tell if an infant is dehydrated.
An American Text-Book of Obstetrics. Edited by Richard C. Norris and Robert L. Dickinson, 1895.

Fetal head - displaying bones, fontanelles, and average measurements at 9 months of gestation

The fontanelles (or fontanels) of the fetal skull are critical anatomical features during vaginal birth. These allow the cranial bones to move around such that the newborn often resembles a Conehead right after birth - but the look is a good thing! The funky look usually goes away within the first day or two, and this weird pointy head is the primary reason that mom could push that watermelon-sized baby through a pelvic opening that could ordinarily not even accommodate a large mango.

The mastoid, sphenoidal, and posterior fontanelle generally disappear by six months of age, while the larger anterior fontanelle can take up to two years to grow into bone. A sunken fontanelle is one of the ways to tell if an infant is dehydrated.

An American Text-Book of Obstetrics. Edited by Richard C. Norris and Robert L. Dickinson, 1895.

262 notes

Show

  1. chrumblr reblogged this from biomedicalephemera
  2. inmylittlecorneroftheuniverse reblogged this from biomedicalephemera
  3. mutedtempest reblogged this from biomedicalephemera
  4. historicalwhatsits reblogged this from biomedicalephemera
  5. tomplzblog reblogged this from biomedicalephemera
  6. quincy-here reblogged this from thestruggleforexistence
  7. javierid reblogged this from biomedicalephemera
  8. 0021able reblogged this from nursingisinmyblood
  9. thestruggleforexistence reblogged this from biomedicalephemera
  10. bonbonusagi reblogged this from nursingisinmyblood
  11. medicalelephant reblogged this from nursingisinmyblood
  12. pedsrnhannah reblogged this from nursingisinmyblood
  13. nursingisinmyblood reblogged this from heartandsoulmidwifery
  14. do-noharm reblogged this from heartandsoulmidwifery
  15. thin-mermaids reblogged this from heartandsoulmidwifery
  16. tryingforbabymorgan reblogged this from nursingfinds
  17. heartandsoulmidwifery reblogged this from nursingfinds
  18. nursingfinds reblogged this from biomedicalephemera
  19. nursingmonkeymomma reblogged this from biomedicalephemera
  20. inaliceshead reblogged this from biomedicalephemera
  21. shnoopit reblogged this from thanatosfosforos
  22. thanatosfosforos reblogged this from clematispassiflora
  23. clematispassiflora reblogged this from bonedust
  24. bonedust reblogged this from theolduvaigorge
  25. cizavilation reblogged this from theolduvaigorge
  26. theolduvaigorge reblogged this from biomedicalephemera
  27. mavau reblogged this from biomedicalephemera