18 Questions
What is the primary function of the Stratum corneum in the epidermis?
Formation of cornified envelope and desquamation
Which layer of the epidermis contains cells with numerous cytoplasmic processes attached by desmosomes?
Stratum spinosum
In skin tissue renewal, what structures are responsible for cell-cell interactions?
Corneodesmosomes
Which process is associated with tissue repair rather than tissue renewal in the skin?
Complete regeneration
Which layer of the epidermis is primarily responsible for mitotically dividing small cuboidal stem cells?
Stratum basale
What distinguishes the Stratum granulosum from other epidermal layers?
Presence of lamellar bodies and profilaggrin granules
What is the renewal rate of hepatocytes?
1 year
Which of the following cell types show very limited or almost no cellular turnover?
Neurons
In tissue homeostasis, which cells have low cellular turnover except in cases of injury?
Lymphocytes
Which tissue has a renewal rate of 5 days for its epithelium?
Small intestine
What is the primary function of the dermis in the skin structure?
Providing mechanical strength
Which of the following cells are exceptions and can undergo differentiated cell division?
Hepatocytes
What is the key cellular event that occurs during re-epithelialization in skin wound healing?
Proliferation and migration of stem cells
In which phase of skin wound healing do myofibroblasts play a significant role?
Remodeling
Which type of renewal involves complete regeneration similar to that observed during development?
Tissue renewal
What is the primary function of macrogphages in the skin wound healing process?
Removal of cellular debris and resolution of inflammation
Which process leads to avascular and acellular wound with collagen type I deposition in skin wound healing?
Granulation tissue formation
What is the primary function of myofibroblasts in skin wound healing?
Contraction to pull wound margins together
Learn about the different layers of the epidermis including stratum corneum, stratum granulosum, stratum spinosum, and stratum basale. Understand the unique characteristics and functions of each layer in skin structure.
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