In which layer(s) is (are) touch and pressure receptors found? epidermis only epidermis and dermis dermis only dermis and hypodermis only epidermis, dermis, and hypodermis
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- Which of the following is INCORRECT about the integumentary system? O The epidermis is comprised of nonkeratinized stratified squamous epithelium. The hypodermis is comprised of white (unilocular) adipose tissue. O The reticular layer of the dermis is comprised of dense irregular connective tissue. O The papillary layer of the dermis is comprised of loose (areolar) connective tissue. O Thick skin is found on the palms of the hands and soles of the feet and does not contain hair follicles.ENUMERATE IN SEQUENCE THE FIVE (5) LAYERS OF THE EPIDERMIS FROM THE DEEPEST TO THE OUTERMOST LAYER AND DESCRIBE IT IN A SIMPLE WAY.Explain what happens to dermal blood vessels when heat needs to be conserved? (i.e., due to a cold environment).
- Histological preparation of skin demonstrates dense unformed connective tissue. What layer of this organ is formed by such tissue? O Reticular dermis Papillary dermis O Epidermis O Basal membrane O Hypodermis *One important function provided by the layer of epidermis indicated by the arrow is:Compare structural and functional differences in thin and thick skin by completing the table below. FEATURE THIN SKIN THICK SKIN Distribution Epidermal thickness Epidermal strata Epidermal ridges Hair follicles and muscles arrector pili Sebaceous glands Sudoriferous glands Sensory receptors
- Papillary Layer: Each of these bumps or areas of the dermis that protrude into the epidermis is called a epiderma ridges What is the function of the dermal papilla? Reticular Layer: "Reticular" means network and can refer to many structures, not just reticular connective tissue. This layer of the dermis is made of mostly dense irregular connective tissue. Why?_ Draw what you see. Label the collagen fibers, fibroblast nuclei, and any hair or glands that you see. HYPODERMIS: Fibroblast: Collagen Dense regular connective tissue Dense irregular connective tissue You will see a tissue that looks like soap bubbles. Each "bubble" is a single cell with one nucleus pushed to the very edge of the bubble. The rest of the cell is filled with fat or adipose, giving the tissue its name: loose connective tissue. You also find this tissue in areas of the body where fat is stored (yellow bone marrow, greater omentum, etc.) What is the function of this tissue in this layer of the skin? Draw what you…Choose: Stratum Spinosum, Epidermis, Stratum Lucidum, Arrestor pili muscle, Sensory nerve fiber, lamellar ( Pacinian ) corpuscle, Hypodermis, Dermal Papillae, Hair root, Sebaceous (oil) gland , Stratum corneum, Hair follicle (between shaft and root), Hair shaft, Eccrine seat gland, Stratum granulosum, Tactile (Meissner's) corpuscle, Stratumbasale, Adipose tissue, Hair follicle receptor, DermisCompare the location and structure of the epidermis, dermis, and subcutaneous tissues. if possible (pictures could added)
- Which epidermal layer has a high concentration of dendritic (Langerhans') cells and has numerous desmosomes? Stratum corneum Stratum lucidum Stratum granulosum Stratum basale Stratum spinosumOne of the functions of the integumentary system is protection. Which of the following does not directly contribute to that function? Vitamin D synthesis Sweat Hair Keratin Melanin Sebum 4Which epidermal cells are also called prickle cells? Which contain keratohyaline and lamellar granules?