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...nformation about specific events in different systems. For a less detailed timeline see week by week. | [[File:Human development timeline graph 01.jpg|280px]]

Finally consider fetal changes that are occurring in auditory pathway. ! Lateral view (external)

[[File:Streeter1922-fig02.jpg|thumb|300px|Adult external ear]] The {{outer ear}} or external ear is derived from 6 surface hillocks (auricular hillocks), three on each

...with more specific information. For more detailed information see [[Mouse Timeline Detailed]]. ...pid growth of the brain is striking. The nasal pits start to form. Absent: auditory hillocks, anterior footplate. Embryonic age = 11 dpc (range 10.5-11.25 dpc)

...geal pouch and is connected directly to the oral cavity by a hollow tube (auditory tube). In addition there are two muscles (tensor tympani and stapedius) for ...ximately 15-16 weeks of gestation) before opening of the external acoustic meatus, the incudostapedial joint showed abundant elastic fibers, but the incudoma

{{hearing}} - Auditory hillocks absent. Efferent nerve endings first approach hair cells (E11-12)< ...tic pit are coming together reducing the entrance to a narrow slit and the auditory hillocks become visible. Absent: retinal pigmentation, signs of 'fingers'.

{{Timeline Links}} =The Development of the External Form of the Guinea—Pig (Cavia Cobaya) Between the Ages of 21 Days and 35

...:Mouse E19|E19]] | [[:Category:Mouse E20|E20]] | [[Mouse_Timeline_Detailed|Timeline]] | [[Mouse_Timeline_Detailed#Timed_Pregnancy|About timed pregnancy]] |+ Table 1: Mouse embryonic stages of development from fertilization to zona free bl