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24 Cards in this Set

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Stratified squamous (keratinized) epithelium
Epidermis
Thick Skin Epidermis Layers
stratum germinitivum
stratum spinosum
stratum granulosum
stratum lucidum
stratum corneum
Single layer of columnar or cuboidal cells
Basophilic cytoplasm
Mitoses present
Sits on basal lamina
stratum germinitivum (basale)
cells APPEAR to have cytoplasmic spines.
Some mitoses
stratum spinosum (prickle cell layer)
Diamond-shaped
cytoplasmic keratohyalin granules
no mitoses
stratum granulosum
clear, translucent
homogenous,eosinophilic band.
flattened closely packed cells
nuclei indistinct or absent
cytoplasm contains lots of keratohyalin (semifluid state)
stratum lucidum
composed of clear, dead, flattened (scale-like) cells.
cells are desquamated from this layer
nuclei absent
highest concentration of keratin (keratohyalin + tonofilaments)
stratum corneum
In this layer of dermis dermis “projects” up into the epidermis.
Papillary layer
NOT considered part of skin
some areas - lots of fat pads: PANNICULUS ADIPOSUS
Hypodermis
light-staining; involved in the transport of ionic substances from the interstitium to the lumen of the sweat gland.

what cell and what part of the sweat gland
clear cells [secretary portions of sweat glands]
darker-staining; involved in the synthesis & secretion of a mucinous glycoprotein that forms a film on the skin.


what cell and what part of the sweat gland
dark cell [secretary portions of sweat glands]
In this stage in hair development is also known as the condensation of C.T. The mass of cells invaginates the base of the bulb
(expanded portion of follicle).
dermal papilla
the dermal papilla contains a high concentration of (4):
(1) blood vessels, (2)
nerves, (3) lymphatics, & (4) loose C.T. cells
The epidermal root sheath consists of several layers. This layer is continuous with the deeper layers of the epidermis. It is separated from the dermal root sheath
by the glassy membrane (basement membrane)
Outer root sheath
The epidermal root sheath consists of several layers. The inner root sheath also consists of three layers. What are they?
a) Henle’s layer
b) Huxley’s layer
c) Cuticle of root sheath
the layer of the inner root sheath that consists of a single layer of clear, flattened, overlapping kerantinized cells with a free edge which is directed downward and interdigitate?
Cuticle of root sheath
the layer of the inner root sheath that consists of several layers of cells is?
Huxley’s layer
the layer of the inner root sheath that consists of a single layer of cells is?
Henle’s layer
This part of the hair shaft, forms the central portion of the shaft. It contains “soft” keratin and some
melanin.
Medulla
This part of the hair shaft, forms the major part of the wall of the hair. Contains melanin in and between
the cells.
Cortex
This part of the hair shaft, forms the outer layer of the hair. Consists of a single layer of clear, flattened,
overlapping kerantinized cells. The cells have a free edge which is directed
upward and interdigitate with similar cells.
Cuticle
this secretory product of Sebaceous Glands is mucinous and contains phospholipids, triglycerides, wax
esters, and free fatty acids.
sebum
this type of sensory ending in the skin has a free nerve endings; may be any of the three functional types (mechano,nocio, or thermo)
unencapsulated
There are two types of encapsulated nerve endings what are they?
1) Pacinian corpuscles
2) Meissner’s corpuscles