Where are Chondrogenic cells found?
Chondrocytes are the only specialized cell type found in the cartilage tissue. Their diameters vary in between 7 and 30 µm according to the anatomical layer. These cells form 1–2% of the tissue volume (Alford and Cole, 2005). They are responsible for functional and structural integrity of cartilage.
What are the Chondrogenic cells?
Chondroblasts are progenitor cells that secrete the extracellular matrix (ECM), while chondrocytes are involved in nutrient diffusion and matrix repair. Both cell types are required to form cartilage.
What types of cells can hair stem cells give rise to?
Stem cells located in the hair-follicle bulge area give rise to the follicle structures during each anagen phase. Taylor et al. (1) reported that hair-follicle bulge stem cells are potentially bipotent because they can give rise not only to cells of the hair follicle but also to epidermal cells.
Are hair follicle stem cells multipotent?
The hair follicle (HF) is a dynamic mini organ supporting important biological functions of the body. Hair follicle stem cells (HF-SCs) have been shown to be highly proliferative in vitro and multipotent,3–5 thereby enabling engineering of various tissues for organ replacement and regenerative medicine.
Who discovered chondrocytes?
A distinct tissue. The first documented recognition of cartilage has been attributed to Aristotle (384–322) in the fourth century BC: “Cartilage is found where it is an advantage that the solid framework should be pliable and glutinous for the benefit of the flesh that surrounds them.
What is the difference between osteoblasts and chondrocytes?
Osteocytes are developed in the mucoid connective tissue and a mature osteocyte contains a single nucleus. Chondrocytes are involved in the maintenance of cartilage. Osteocytes are involved in the maintenance of bone tissue. This is the difference between Chondrocytes and Osteocytes.
What are stem cells in hair follicle?
Hair follicle stem cells are long-lived cells in the hair follicle; they are present in the skin and produce hair throughout a person’s lifetime. They are “quiescent,” meaning they are normally inactive, but they quickly activate during a new hair cycle, which is when new hair growth occurs.
What cells are in the hair follicle?
Hair follicle stem cells in the epithelial bulge are responsible for the continual regeneration of the hair follicle during cycling. The bulge cells reside in a niche composed of dermal cells. The dermal compartment of the hair follicle consists of the dermal papilla and dermal sheath.
What is the origin of bone?
The origin of bone. Precipitation of hydroxyapatite around the basal membrane of the skin gave rise to enamel- and dentine-like tissues that formed odontodes, which became the progenitors of teeth and scales. Spread of mineralization deeper in the dermis formed shields consisting of acellular—and later cellular—bone.