The Human Brain During the First Trimester

Shirley A. Bayer, Jospeh Altman

Volume 1
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Specimens and Collections ----------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------2
3-Dimensional Computer Reconstructions----------------------------------------------------------------2
Identification of Transient and Immature Brain Regions ---------------------------------------------2
References ------------------------------------------------------------------------------------------------------8
PART II. 4.0 mm Crown Rump (CR) Length, M714 -------------------------------------------------------------10
Plates 1-13 A/B --------------------------------------------------------------------------------------------11-37
PART III. 3.5 mm CR, C7724 ------------------------------------------------------------------------------------------38
Plates 14-21 A/B ------------------------------------------------------------------------------------------40-55
High Magnification Plates 22-26 A/B ------------------------------------------------------------------56-65
PART IV. 4.0 mm CR, C836 --------------------------------------------------------------------------------------------66
Plates 27-37 A/B -------------------------------------------------------------------------------------------68-89
PART V. 4.5 mm CR, C9297 ------------------------------------------------------------------------------------------90
Plates 38-46 A/B -----------------------------------------------------------------------------------------92-109
High Magnification Plates 47-51 A/B --------------------------------------------------------------110-119
Volume 2
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Specimens and Collections ----------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------2
3-Dimensional Computer Reconstructions----------------------------------------------------------------2
Neurogenesis in Specimens (CR 6.3-10.5 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------14
PART II. 6.3 mm Crown Rump (CR) Length, M2300 -----------------------------------------------------------16
Plates 1-13 A/B --------------------------------------------------------------------------------------------18-43
PART III. 7.1 mm CR, C8966 ------------------------------------------------------------------------------------------44
Plates 14-20 A/B ------------------------------------------------------------------------------------------46-59
High Magnification Plates 21-22 A/B ------------------------------------------------------------------60-63
PART IV. 8.0 mm CR, C8314 ------------------------------------------------------------------------------------------64
Plates 23-32 A/B -------------------------------------------------------------------------------------------66-85
PART V. 10.5 mm CR, C6516 -----------------------------------------------------------------------------------------86
Plates 33-37 A/B ------------------------------------------------------------------------------------------88-97
High Magnification Plates 38-47 A/B ----------------------------------------------------------------98-117
PART VI. 10 mm CR, M1000 -----------------------------------------------------------------------------------------118
Plates 48-61 A/B ---------------------------------------------------------------------------------------120-147
High Magnification Plate 62 A/B -------------------------------------------------------------------148-149
Volume 3
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Specimens and Collections ----------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------2
3-Dimensional Computer Reconstructions----------------------------------------------------------------2
Neurogenesis in Specimens (CR 15 to 18 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------20
PART II. 15 mm Crown Rump Length, C9247 --------------------------------------------------------------------22
Plates 1-7 A/B ----------------------------------------------------------------------------------------------24-37
High Magnification Plates 8-21 A/B---------------------------------------------------------------------38-65
PART III. 15 mm Crown Rump Length, M2051 -------------------------------------------------------------------66
Plates 22-38 A/B -----------------------------------------------------------------------------------------67-101
High Magnification Plate 39 A/B --------------------------------------------------------------------102-103
PART IV. 15.8 mm Crown Rump Length, C492 ------------------------------------------------------------------104
Plates 40-56 A/B ----------------------------------------------------------------------------------------106-139
PART V. 18 mm Crown Rump Length, C1390 -------------------------------------------------------------------140
Plates 57-63 A/B ---------------------------------------------------------------------------------------142-155
High Magnification Plate 64 A/B -------------------------------------------------------------------156-157
PART VI. 17.5 mm Crown Rump Length, M2155 ----------------------------------------------------------------158
Plates 65-81 A/B ---------------------------------------------------------------------------------------160-193
High Magnification Plates 82-84 A/B --------------------------------------------------------------194-199
Volume 4
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Specimens and Collections ----------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------2
3-Dimensional Computer Reconstructions----------------------------------------------------------------2
Neurogenesis in Specimens (CR 21 to 23 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------24
PART II. 21 mm Crown Rump Length, C6202 --------------------------------------------------------------------26
Plates 1-7 A/D ---------------------------------------------------------------------------------------------28-55
High Magnification Plates 8-21 A/B---------------------------------------------------------------------56-71
PART III. 23 mm Crown Rump Length, C966 ---------------------------------------------------------------------72
Plates 22-36 A/B -----------------------------------------------------------------------------------------74-115
3-D Reconstructions: Figures 22-31 ----------------------------------------------------------------116-125
Volume 5
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------2
Development in Specimens (CR 31 to 33 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------17
PART II. 32 mm Crown Rump Length, C609 ---------------------------------------------------------------------18
Plates 1-10 A/B --------------------------------------------------------------------------------------------20-39
High-Magnification Plates 11-16 A/B-------------------------------------------------------------------40-51
PART III. 31 mm Crown Rump Length, C9226 --------------------------------------------------------------------52
Plates 17-36 A/B ------------------------------------------------------------------------------------------54-93
High-Magnification Plates 37-38 A/B-------------------------------------------------------------------94-97
PART IV. 33 mm Crown Rump Length, C145 ---------------------------------------------------------------------98
Plates 39-48 A/D ---------------------------------------------------------------------------------------100-139
High-Magnification Plates 49-63 A/B----------------------------------------------------------------140-171
Volume 6
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------1
Development in Specimens (CR 40 to 42 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------13

PART II. 42 mm Crown Rump Length, M841 ---------------------------------------------------------------------14
Plates 1–20 A–B -------------------------------------------------------------------------------------------16–55

PART III. 42 mm Crown Rump Length, C886 ---------------------------------------------------------------------56
Plates 21–22 A–B -----------------------------------------------------------------------------------------58–61
Plates 23–30 A–D------------------------------------------------------------------------------------------62–93
Plates 31–38 A–B--------------------------------------------------------------------------------------- 94–109

PART IV. 40 mm Crown Rump Length, C6658 -------------------------------------------------------------------110
Plates 39–49 A–D --------------------------------------------------------------------------------------112-155
High-Magnification Plates 50–65 A–B---------------------------------------------------------------156-187
Volume 7
PART I. INTRODUCTION --------------------------------------------------------------------------------------------1
Organization of the Atlas ------------------------------------------------------------------------------------1
Plate Preparation ----------------------------------------------------------------------------------------------1
Development in Specimens (CR 57 to 60 mm) ----------------------------------------------------------2
References ----------------------------------------------------------------------------------------------------11

PART II. 57 mm Crown Rump Length, C1500 --------------------------------------------------------------------12
Low-Magnification Plates 1–21 A–B -------------------------------------------------------------------14–55

PART III. 60 mm Crown Rump Length, Y1-59 --------------------------------------------------------------------56
Low-Magnification Plates 22–42 A–B -----------------------------------------------------------------58–99
High-Magnification Plates 43-56 A–B---------------------------------------------------------------100-127