A Practical Approach, Second Edition=Ronald D. Ho.pdf

Table 6.10DescriptionMuscular SystemComparative gestational milestones in muscular, skeletal, and integumentary system developmentAge(d)Rat Mouse Rabbit Hamster Guinea Pig Rhesus Monkey Human ChickenRef.Age(d)Ref.Age(d)Ref.Age(d)Ref.Age(d)Ref.Age(d)Size Somites(mm)SomitesSomitesSomitesSomitesSomitesRef.Age(d)Primitive streak 9 10 8 10 7.25 10 7 10 13 10 17 10 17 10 0.5d 10First pharyngeal 10 2 5–12 1–4,6, 8–8.5 5,7–9 9.5 27 23 10 83arch9Ten-somite stage10.5 10 10 8.5 10 8.5 10 10 8 10 10 15 10 10 23 10 10 25 10 10 1.5d 10 10Pharyngealarches I and II,clefts I and IIAnterior limbbudThreepharyngealarchesHind limb bud b 11.5–12Appearance of4th pharyngealarchesMaxillaryprocesses meetnasolateral andmedialprocessesSubdivision offorelimb budCervical sinusobliteratedDigital rays(forepaw)Pleuroperitonealcanal closed;completediaphragm11 3.3 21–2511.5 3.8 26–283.8 26–2811.75 4.2 29–3112–13 7 43–4512.75–1413–13.513.5–147 43–458–8.5 46–5115 12 61–631–4,6,91–4,6,91–4,6,9,101–4,6,91–4,6,9,271–4,6,9,271–4,6,9,18,253,4,10,27,29–321–4,6,99.5–9.7523± 5,7–9,3910 5,7–9,6010–10.35,7–9,109.5–9.7510.5–1127 8.5 17–2027,578.75 17–2044 24–27 3.3 13–2042,44,46,4716.5 23 56 25–26 46 26 3–5 21–299.75 27 8.75 44 16.5 23 56 28–30 60 28–32 4–6 21–2411–1210.25 5,7–9 9.75–10.510.5 60 12–1312 5,7–9 13–1412.3 7,10,29,409 12–1310,27,5714.5 10,27,299 44 17.5–18.529 10,56 28–30 10,60 28–32 4–6 30–3227 9 44 16.5 23 56 28–29 33 32 4.6–5 33–34Ref.Age(d/h)Size Somites(mm) aSomitesRef.9,71, 83–85,912–3d 22 86,8739,73 51–56h 26– 30,862860,84,92,1669,10,60,71,73,84,8553–55h 24–272.2–3d 29–3283,84 3.5d 43–4427 9.25 44 37–38 33 42–45 12–13 83 23–26h 4–5 8827 10.5 44 20.75 39 56 30–32 60 31–35 5–7 6027 10 44 23.75 56 33–34 33 40–44 8–15 83,8410.25–1110,42,44,4822–23.7586,8710,8610,56 34–35 10,46 35–37 8–11 10 4.75d 30,8626 56 20 8386COMPARATIVE FEATURES OF VERTEBRATE EMBRYOLOGY 181© 2006 by Taylor & Francis Group, LLC