front matter 1

m (medial)c (central)l (lateral)

*

v (ventral)

d (dorsal)

rd (retrodorsal)

PANELS

TIERS

*This panel includes the lateral and far lateral subdivisions

GRID KEY (based on Altman and Bayer, 2001)

mmcc ll

vv

dd

rdrd

mmcc ll

vv

dd

rdrd

Cervical Sections of 3-D Model

1

2

3

4

5

MOTOR COLUMN KEY

Color

mv, md

(all sections) AXIAL

DIAPHRAGM AND PROXIMAL

UPPER LIMB (SHOULDER)

PROXIMO-DISTAL UPPER LIMB

(ARM AND FOREARM)

DISTAL UPPER LIMB

(WRIST AND HAND)

A medial subdivision of motor column 2?

A lateral subdivision of motor column 1?

cd (sections 361-391)

lv, lc (sections 431-551)

ld (sections 581-611)

1d

(sections 431-581)

lrd

(sections 431-551)

cv (sections 551-581)

mv, cv (section 611)

361

391

431

461

491

521

551

581

611

1

2

1

1

2

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

25 1

3

(^251)
(^251)
3
4
section
number
edge of white matter
edge of gray matter
Labeled Number (also in Figure 20E)
Column (Panel and Tier)
Muscle Innervation (?)
UPPER CERVICAL
LOWER CERVICAL
Figure 16. This specimen from the Yakovlev Collection contains serially numbered 35-μm thick sections. All outlines are profi les of the sections used
in the cervical region of the spinal cord. These profi les were constructed from the right side of the section, then copied to the left side to make the model
symmetrical. After fi xation, the cervical region of the model is 8.79 mm long. Two of these sections are illustrated in the Atlas. Section 361 is in Plate
22 ; section 521 is in Plate 23. The cervical model is shown by itself in Figure 20.
GW10.5, CR 56 mm, Y380-62 FIGURE 16