889
CHAPTER TWENTY-THREE
Reproductive System
(b)
37
+
1 day (12.5–15.75 mm)
(a)
35
+
1 day (10–12 mm)
(d)
45
+
1 day (22–24 mm)
(c)
40
+
1 day (16–21 mm)
(e)
49
+
1 day (28–30 mm)
(g)
56
+
1 day (34–40 mm)
(f)
52
+
1 day (32–34 mm)
Mandibular
process
Developing ear
External ear
Developing
eye
Notches
between
digital rays
Forebrain
Nasal pit
Tail
Elbow
Handplate
Lens
Midbrain
Pigmented
eye
Paddle-shaped
foot plate
Ear
Fingers
separated
Eyelid
Webbed fingers
Notches
between
toe rays
Heart prominence
Hindlimb
Maxillary
process
Paddle-shaped
forelimb
External ear
Wrist
Digital rays
External
acoustic
meatus
Toe rays
Toes
separated
Fan-shaped
webbed toes
FIGURE 23.14
Changes occurring during the f
Fth (
a–c
), sixth (
d
), and seventh (
e–g
) weeks oF development. The photo corresponds to Forty-nine
days oF development.
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