Week 4 (Tissues, Integumentary) Flashcards
Compare and contrast epithelial and connective tissue
Name the twelve (12) organ systems of the body and outline the major function of each
Identify the body cavity location of the major internal organs (viscera)
Name the serous membranes (serosa) lining the thoracic and abdominal cavities
- thoracic cavity:The pleura is the serous membrane that lines the thoracic cavity and covers the lungs
- abdominal cavity: The peritoneum is the serous membrane that lines the abdominal cavity and covers most of the abdominal organs.
Describe the composition of the dermis
The dermis lies beneath the epidermis and provides structural support, elasticity, and nourishment to the skin.
Papillary Dermis: The superficial layer of the dermis, characterized by finger-like projections called dermal papillae. It contains blood vessels, nerve endings, and Meissner’s corpuscles (touch receptors
Reticular Dermis: The deeper and thicker layer of the dermis, composed of dense irregular connective tissue. It provides structural support and houses structures such as sweat glands, hair follicles, sebaceous glands, and Pacinian corpuscles (pressure receptors).
Describe the composition of the epidermis
The epidermis is the outermost layer of the skin, serving as a protective barrier against environmental factors, pathogens, and water loss.
Stratum Corneum: The outermost layer consisting of dead, keratinized cells that continuously slough off. It provides protection against abrasion and forms the skin’s barrier.
Stratum Lucidum: Present only in thick skin (e.g., palms and soles), this layer consists of translucent cells with no nuclei and provides additional protection.
Stratum Granulosum: Composed of keratinocytes undergoing keratinization (the process of filling with keratin and dying), this layer helps waterproof the skin.
Stratum Spinosum: Keratinocytes in this layer have a spiny appearance due to cell-to-cell junctions called desmosomes. It provides strength and support to the epidermis.
Stratum Basale (or Stratum Germinativum): The deepest layer of the epidermis, where keratinocytes undergo rapid division to replenish the cells of the upper layers. Melanocytes, which produce the pigment melanin, are also found here, providing protection against UV radiation.
Name the organ interactions involved in the formation of Vitamin D
vitamin D involves interactions between the skin, liver, and kidneys.
Describe the distribution and roles of the cutaneous glands
Discuss the role of the integumentary system in maintaining homeostasis
Relate the structure and function of the integumentary system to a range of nursing actions
Give an example location for each of the following tissues:
Simple Squamous
- Lungs (diffusion)
Give an example location for each of the following tissues:
Simple Cuboidal
- Kidneys (absorption)
Give an example location for each of the following tissues:
Simple Columnar
- Stomach (secretion)
Give an example location for each of the following tissues:
Stratified Squamous
- Protection from Skin abrasion
Epithelial tissue is classified by :
- The number of cell layers
- Theshape of the cells
Simple epithelial have …. layer of cells
- One
Stratified epithelium has …. layers of cells
- many
….. epithelium has cells that are flattened like fish scales
- Squamous