Page 165 - Design in Nature

Web of capillary vessels

Internal
carotid
artery

Endothelium
Sinus
Valves that cavities Internal maxillary
enable the artery
return flow
of blood
Supporting
tissue

Outer layer
Middle layer
Hair
Inner layer
Epidermis
Endothelium
Lymphatic
Subcutaneous
fat
Arteriole
Muscle
Veinule

Left carotid

Right carotid
Axillary Artery
Heart

Humeral
artery

Middle
artery

Metacarpal
artery
Inner layer Middle

Digital
Outer layer
artery
Endothelium
Lingual
Valves that artery
enable the
return flow
of blood
Supporting
tissue