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37 terms

ALTRON chapter 5 INTEGUMENTARY SYSTEM WORKSHEET

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(Skin, skin layers and structures: name what best fits the description) Layer of epidermis where there is the most rapid cell division
STRATUM BASALE: the deepest of the five layers of the epidermis or epithelium, composed of a single layer of tall cylindrical cells or cubodial cells, respectively. This layer provides new cells by mitotic cell division via stem cells. Also called the basal layer or germative layer. Cells made are called KERATINOCYTES. p.105
(Skin, skin layers and structures: name what best fits the description) Water-repellent layer; contains dead cells on dorsum of hand
Stratum corneum
(Skin, skin layers and structures: name what best fits the description) Areolar connective tissue layer
Subcutaneous layer (SubQ layer) has the Areolar connective tissue AND Adipose CT
(Skin, skin layers and structures: name what best fits the description) Projections of dermis that cause epidermal ridges
Dermal papillae pushes upward to create this.
(Skin, skin layers and structures: name what best fits the description) Translucent layer in epidermis
Stratum lucidum: 'clear', present only in thick skin, fingertips, palms and soles. 3- 5 layers of flattened, clear, dead keratinocytes
(Skin, skin layers and structures: name what best fits the description) Layer that appears to have thorn-like projections
Stratum spinosum: 'thornlike', 8-10 layers of many sided keratinocytes
(Skin, skin layers and structures: name what best fits the description) Thick layer containing dense, irregular connective tissue
Reticular Region: 'netlike', attached to the subQ layer and consists of dense
irregular connective tissue with fibroblasts, interlacing bundles of collagen and some coarse fibers, a few adipose cells, hair follicles, nerves and blood vessels.
(Skin, skin layers and structures: name what best fits the description) Layer containing visible granules
Lamellar granules: a water repellant sealant
(Skin, skin layers and structures: name what best fits the description) Has 5 strata and fingerprints
Thick SKIN
(Skin, skin layers and structures: name what best fits the description) Composed of areolar connective tissue and adipose tissue
Subcutaneous layer: aka, subQ
(Skin, skin layers and structures: name what best fits the description) Includes capillary loops, meisner's corpuscles, and free nerve endings
Dermal papillae: 'nipples', small, fingerlike structures that project into the undersurface of the dermis. Contains capillary loops, tactile receptors known as meissner corpuscles or corpuscles of touch and free nerve endings.
(Skin, skin layers and structures: name what best fits the description) Area containing epithelial tissue
Epidermis
(Cells of the epidermis: name of the epidermal cell type that fits the description) Helps stimulate immune responses
Langerhans cells: arise from red bone marrow; they participate in immune responses
(Cells of the epidermis: name of the epidermal cell type that fits the description) Produces a lipid- rich secretion
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(Cells of the epidermis: name of the epidermal cell type that fits the description) Produces a pigment
Melanocytes: 'black cells', 8% of epidermal cells, produce melanin, yellow- red or brown-black pigment that contributes to skin color and absorbs UV light.
(Cells of the epidermis: name of the epidermal cell type that fits the description) Associated with the sensation of touch
Merkel cells: least numerous of epidermal cells, located in deepest layer of epidermis, contacts flattened portion of a sensory neuron known as a merkel (tactile) disc
(Cells of the epidermis: name of the epidermal cell type that fits the description) Contains keratohyalin granules
Stratum granulosum: 'little grains', 3-5 layers of flattened keratinocytes undergoing apoptosis
(Cells of the epidermis: name of the epidermal cell type that fits the description) Protects nuclei against UV radiation
Melanocytes
(Cells of the epidermis: name of the epidermal cell type that fits the description) Undifferentiated cells that undergo division
Basal cells
(Cells of the epidermis: name of the epidermal cell type that fits the description) 92% of the cells of the epidermis
Keratinocytes
(What is the name of the structure that best fits the description?) Gland located in the axillary and genital areas, active after puberty
Apocrine sweat glands
(What is the name of the structure that best fits the description?) Connective tissue projection; provides a blood supply for epidermis
Papillary region
(What is the name of the structure that best fits the description?) Epithelial portion that surrounds hair root.
Arrector pili
(What is the name of the structure that best fits the description?) Secrets sebum onto hair and skin
Sebaceous glands
(What is the name of the structure that best fits the description?) Glands that deposit sweat onto epidermal ridges
Sudoriferous glands/ Eccrine
(What is the name of the structure that best fits the description?) Causes goose bumps
Arrector pili
(What is the name of the structure that best fits the description?) Deep pressure receptors
corpuscles
(What is the name of the structure that best fits the description?) Superficial touch receptors - -Dermal papillae: 'nipples', small, fingerlike structures that project into the undersurface of the dermis. Contains capillary loops, tactile receptors known as free nerve endings.
meissner corpuscles
(What is the name of the structure that best fits the description?) Substance found in the external ear canal
cerumen
(What is the name of the structure that best fits the description?) Glands whose duct empties into a hair follicle - 'greasy', aka oil glands, are simple branched acinar glands that are mostly connected to hair follicles
Sebaceous glands:
(What is the name of the structure that best fits the description?) Glands which help regulate temperature
ECCRINE SWEAT GLANDS
(What is the name of the structure that best fits the description?) Increases surface friction and grip (found only in thick skin)
Epidermal ridges
(What is the name of the structure that best fits the description?) Synthesize and secret milk
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(What is the name of the structure that best fits the description?) Includes the medulla, cortex and cuticle
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(What is the name of the structure that best fits the description?) Derived from the stratum basale and forms new hair cells - the site of cell division, cells arise from the stratum basale, produces new hairs when old hairs are shed.
Hair Matrix:
(What is the name of the structure that best fits the description?) The expanded base of the hair follicle
Bulb
(What is the name of the structure that best fits the description?) Projection of the dermis into the hair follicle
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