3B Scientific 3 part skin model - Manual (Page 4)

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A Scalp
B Hairless skin
C Hairy skin
D Scalp, side view
E Hairy skin, side view
F Hairless skin, side view
G Scalp, view from above
H Hairless skin, view from above
I Hairy skin, view from above
1 Epidermis
1 a Basal layer of epidermis
1 b Spinous layer of epidermis
1 c Granular layer of epidermis
1 d Clear layer of epidermis
1 e Horny layer of epidermis
2 Derma
3 Subcutis
4 Blood vessels
5 Nerve
6 Lamellated corpuscles
7 Sweat gland
8 Sebaceous gland
9 Hair
10 Medulla of hair
11 Cortex of hair
12 Inner root sheath
13 Outer root sheath
14 Hair follicle
15 Hair papilla
16 Arrector muscle of hair
17 Sudoriferous gland
Skin Model, 3 part
80 times enlargement
English
The skin of an adult person stretches over a body area of around 1.2-2.5 m². It consists of two layers - the
top layer (epidermis) and a connective tissue layer below it called the dermis. Below the dermis is the sub
cutis consisting of fat cells and connective tissue, however, this is not considered to be skin in the true
sense.
This presentation consists of three individual models that represent sections of the human skin with a
magnification of 80. The microscopic structures within the skin such as tactile corpuscles, glands and blood
vessels are modelled in plastic in the sections to aid spatial comprehension of the microscopic inter-relati-
onships. All three models, which can be removed individually, are located on a common base and are held
together with magnets.
Specific microscopic distinctions of the skin are depicted and related to the particular area of the body
where they occur. For example, the model of the hairless skin that is localised in the palm of the hand,
shows typical features such as the thick epidermis by comparison to other areas of skin and the clear inter-
locking between the epidermis and dermis. When studying the model of the reticular layer of the back of
the hand it is easy to recognise the specific distribution in small fields through the furrows when viewed
from above. A longitudinal section through the human scalp illustrates a shaft of hair protruding over the
epidermis as well as the position of the root sheath where the typical layering and position of the hair
roots can be recognised. Naturally the fine structure of the division of layers of the epidermis can be can be
accurately observed for all skin types represented. All anatomical structures of the skin such as nerve ves-
sels and tactile corpuscles have been accurately depicted and correctly spaced on the models.