Histology Photomicrographs

Human Anatomy and Physiology (BIOL& 241L-242L)
Karen Hart, Peninsula College

• Epithelial tissue
• Connective tissue proper
• Skin
  • Skin and hypodermis
  • Epidermis of thick skin
  • Sebaceous gland, arrector pili
  • Sweat gland
• Cartilage and bone
• Skeletal muscle, smooth muscle
• Nervous system
• Cardiovascular system
• Lymphatic system
• Respiratory system
• Digestive system
• Urinary system
• Reproductive system
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• Histology home page

Skin: Skin and hypodermis

The skin consists of two layers, the epidermis and the dermis. Below the skin is a layer of areolar/adipose tissue called the hypodermis (or subcutaneous layer).

The 40X image shows:

e = epidermis

d = dermis

h = hypodermis

sw = sweat gland

seb = sebaceous gland

hf = hair follicle

p = papillary layer of dermis

r = reticular layer of dermis

The 400X image shows the epidermis and the outer part of the dermis.

The dermis has two layers, a thinner outer layer called the papillary layer and a thicker deep layer called the reticular layer. The papillary layer has fine collagen fibers. The reticular layer has much thicker bundles of collagen.

epid = epidermis

pap = papillary layer of dermis

retic = reticular layer of dermis 

Layers of the epidermis:

ge = stratum germinativum

sp = stratum spinosum

gr = stratum granulosum

co = stratum corneum