Anatomy: Dermis

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  • Topic: Bone, Osteoporosis, Calcium
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  • Published : November 14, 2012
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The dermis is composed of the papillary layer and the ___________. | epidermis|
| cutaneous plexus|
| hypodermis|
| -reticular layerThe reticular and papillary layers together compose the dermis.| What structure is responsible for the strength of attachment between the epidermis and dermis? | stratum corneum|

| basement membrane|
| -epidermal ridge|
| stratum lucidumThe deeper the epidermal ridge, the stronger the attachment.| The type of cells that form the strata in the epidermis are
| Dendritic cells.|
| -keratinocytes.|
| adipocytes.|
| melanocytes.|
| fibroblasts.|
The tough "horny" superficial layer of the epidermis is known as the | stratum spinosum.|
| stratum lucidum.|
| stratum granulosum.|
| -stratum corneum.|
| Stratum germinativum.|
Large quantities of keratin are found in the epidermal layer called the | stratum spinosum.|
| stratum lucidum.|
| stratum granulosum.|
| -stratum corneum.|
| stratum germinativum.|
Water loss due to evaporation of fluid that has penetrated through the skin is termed ________ perspiration. | sensible|
| latent|
| -insensible|
| inactive|

The layer of the skin that provides a barrier against bacteria as well as chemical and mechanical injuries is the | dermis.|
| stratum corneum.|
| -epidermis.|
| subcutaneous layer.Water loss from insensible perspirationIs approximately .5 liters a dayThe epidermis of the skin is composed of which type of tissue?keratinized stratified squamous epitheliumThe layer of stem cells that constantly divide to renew the epidermis is the| | is approximately 0.5 liters a day.|

| depends on apocrine sweat glands.|
| is negligible.|
| always exceeds sensible perspiration.|
| is too small to be measured reliably.|
| Stratum germinatiumThe protein that reduces water loss at the skin surface isKeratinWhile walking barefoot on the beach, Joe stepped on a thorn that penetrated through the sole of his foot to the dermis. How many layers of epidermis did the thorn penetrate?5From what structure does sensible perspiration occur?Sweat glandsCell divisions within the stratum __________ replace more superficial cells which eventually die and fall off.GerminativumThe cells of stratum corneum were initially produced in the __________.stratum germinativumMelanocytes _____________.store melanin in melanosomesThe primary pigments contained in the epidermis arecarotene and melanin.An albino individual lacks the ability to produceMelaninMelanin is produced by melanocytes within the stratum ________.BasaleThe dark pigment melanin is produced within __________.MelanocytesThe layer directly beneath the epidermis is the __________.DemisCell divisions within the stratum __________ replace more superficial cells which eventually die and fall off.GerminativumWhich of these is not an accessory structure of the skin?DermisThe epidermal layer that consists almost entirely of keratin is the __________.Stratum corneumThe cells of stratum corneum were initially produced in the __________. stratum germinativumEach of the following is a function of the integumentary system, exceptSynthesis of vitamin CThe two components of the integumentary system are thecutaneous membrane and accessory structures.the type of cells that form the strata in the epidermis arekeratinocytesThe tough "horny" superficial layer of the epidermis is known as theStratum corneumLarge quantities of keratin are found in the epidermal layer called theStratum corneumWater loss due to evaporation of fluid that has penetrated through the skin is termed ________ perspiration.InsensibleThe layer of the epidermis that contains abundant desmosomes is theStratum spinosumThe most dangerous type of skin cancer is termed ________.Melanoma**Skin cancer that starts in the stratum germinativum is called ________Types of skin cancers includesquamous cell carcinoma, malignant melanoma, and basal...
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