During the inflammation phase of the healing process, what physiological response occurs?

During the inflammation phase of the healing process, what physiological response occurs?

• A. Blood vessels constrict to reduce swelling
• B. The immune system releases histamines
• C. Platelets aggregate to stop bleeding
• D. White blood cells decrease at the injury site

Answer: (B)

The choice stating that the immune system releases histamines is correct because during the inflammation phase of healing, histamines are released in response to tissue injury. This release is primarily due to mast cells in the affected area, which respond to the presence of pathogens or damaged tissues. Histamines cause blood vessels to dilate, leading to increased blood flow and permeability of the vessel walls. This results in the classic signs of inflammation: redness, warmth, swelling, and pain. The increased blood flow allows more white blood cells and nutrients to reach the injury site, facilitating the healing process and combating infection. Understanding the role of histamines in inflammation emphasizes the importance of this phase in healing. It is a critical response to injury that helps to create an environment conducive to repair and regeneration of tissues.

The choice stating that the immune system releases histamines is correct because during the inflammation phase of healing, histamines are released in response to tissue injury. This release is primarily due to mast cells in the affected area, which respond to the presence of pathogens or damaged tissues. Histamines cause blood vessels to dilate, leading to increased blood flow and permeability of the vessel walls. This results in the classic signs of inflammation: redness, warmth, swelling, and pain. The increased blood flow allows more white blood cells and nutrients to reach the injury site, facilitating the healing process and combating infection.

Understanding the role of histamines in inflammation emphasizes the importance of this phase in healing. It is a critical response to injury that helps to create an environment conducive to repair and regeneration of tissues.