Cell Biology and Growth Factors Quiz

What is the primary function of growth factors in cell division and proliferation?

Which of the following is NOT a key characteristic of growth factors' action within a cell?

Which type of signaling is characterized by communication between adjacent cells?

Which of the following components of the Extracellular Matrix is responsible for providing tensile strength and recoil properties to tissues?

In what way does the Extracellular Matrix contribute to tissue repair?

Which type of collagen is predominantly found in basement membranes?

Which of the following is NOT a component of the interstitial matrix?

Which of the following accurately describes the role of integrins in the Extracellular Matrix?

What is the primary role of re-epithelialization in wound healing?

Which growth factor is NOT typically involved in the early stages of angiogenesis?

What characterizes granulation tissue in the context of wound healing?

What initiates endothelial cell migration during angiogenesis?

What is the implication of newly formed vessels being leaky during the healing process?

How long after wounding do fibroblasts typically appear in the wound site?

Which process aids in the supply of nutrients and oxygen to newly formed tissues during wound healing?

What are the main histological components of granulation tissue?

Which factor is known to facilitate the healing of wounds?

What type of scar is characterized by excessive collagen accumulation within the wound boundaries?

Which complication arises from excessive granulation tissue blocking re-epithelialization?

What systemic factor can significantly impair wound healing in older individuals?

What is a potential consequence of infection in chronic wounds?

What is dehiscence commonly associated with in wound healing?

Which vitamin is essential for proper wound healing?

Marjolin’s ulcer is a rare complication that can occur due to which process?

What is the main function of pro-inflammatory cytokines during the inflammatory phase of wound healing?

Which process immediately follows hemostasis in wound healing?

Which of the following is NOT a mechanism involved in hemostasis?

What initiates the healing process immediately after an injury to a wound?

Which cells replace polymorphs in the wound by the third day after injury?

What role do macrophages play during the inflammatory phase of wound healing?

During which phase of wound healing do fibroblasts predominantly rebuild the wound with collagen?

What forms the scar tissue during the healing process?

Which phase involves the formation of granulation tissue due to fibroblast proliferation?

What is the consequence of interruptions in the wound healing process?

During healing by second intention, which structure is likely to be permanently lost?

Which of the following cytokines is a major source during the inflammatory phase?

What is the main function of the extracellular matrix during the proliferation phase of wound healing?

What important feature distinguishes secondary healing from primary healing?

What color change occurs in scar tissue upon maturation?

What is the primary role of myofibroblasts in the healing process?

What is the primary role of fibroblasts in wound healing?

Which cytokine is NOT produced by fibroblasts during the remodeling phase of wound healing?

What is the effect of a lack of oxygen during collagen formation?

What defines healing by secondary intention?

How does the remodeling phase affect the cellular makeup of the scar tissue?

What is the primary mechanism of wound contraction during healing?

Which of the following contributes to the persistent cellularity leading to hypertrophic scars or keloids?

What is a key difference between primary and secondary intention healing?