What role do the dermal papillae play in the dermis?
What role do the dermal papillae play in the dermis?
What role do the dermal papillae play in the dermis? Dermal papillae house many collagen fibers to strengthen the dermis. Dermal papillae house lamellated (Pacinian) corpuscles that detect deep pressure and vibrations applied to the skin.
What is the purpose of connective tissue in the dermis?
The structure of the dermis provides a connective tissue framework for strength, flexibility, and protection of the deeper anatomical structures.
What type of connective tissue makes up the dermis of the skin?
dense irregular connective tissue
The dermis is mostly composed of dense irregular connective tissue that is divided to two layers: the papillary layer and reticular layer. Interwoven within these layers are numerous elastin and collagenous fibers, produced by fibroblasts (Figure 5.6).
What is the name of the part of the hair extending between the bulb and the shaft?
The wall of the hair follicle is made of three concentric layers of cells. The cells of the internal root sheath surround the root of the growing hair and extend just up to the hair shaft.
Which is the superficial layer of the skin?
The epidermis is the superficial layer composed of stratified squamous epithelium. The dermis is the deep layer of skin composed mostly of irregular dense connective tissue. The subcutaneous layer is beneath the dermis and composed of areolar and adipos
Where do cells produce the pigment in hair?
Epidermal cells at the base of the hair follicle dive and grow, pushing older cells outward; as these cells die, they become keratinized parts of the hair. What cells produce the pigment in hair? Distinguish the locations and tissues among epidermis, dermis, and subcutaneous layer.
How are the cells of the stratum corneum different?
How do the cells of stratum corneum and stratum basale differ? Cells of the stratum basale are living and reproduce actively; cells of the stratum corneum are dead and keratinized and form the surface layer of the skin.
How are hair follicles formed in the forearm?
Describe the differences you observed in the type and distribution of hair on the front (anterior) and back (posterior) of your forearm. Explain how a hair is formed. Epidermal cells at the base of the hair follicle dive and grow, pushing older cells outward; as these cells die, they become keratinized parts of the hair.