NEET BIOLOGY

BIOLOGY IN HUMAN WELFARE

HUMAN HEALTH AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following best describes a reaction to injury or infection that is characterized by pain, redness, and swelling?
A
pus
B
swelling
C
inflammation
D
bruising
Explanation: 

Detailed explanation-1: -Acute inflammation is characterized by the active emigration of inflammatory cells from the blood into the area of injury.

Detailed explanation-2: -Inflammatory response: A fundamental type of response by the body to disease and injury, a response characterized by the classical signs of “dolor, calor, rubor, and tumor”–pain, heat (localized warmth), redness, and swelling.

Detailed explanation-3: -At the tissue level, inflammation is characterized by redness, swelling, heat, pain, and loss of tissue function, which result from local immune, vascular and inflammatory cell responses to infection or injury [5].

Detailed explanation-4: -When inflammation happens, chemicals from your body’s white blood cells enter your blood or tissues to protect your body from invaders. This raises the blood flow to the area of injury or infection. It can cause redness and warmth. Some of the chemicals cause fluid to leak into your tissues, resulting in swelling.

Detailed explanation-5: -The inflammatory response (inflammation) occurs when tissues are injured by bacteria, trauma, toxins, heat, or any other cause. The damaged cells release chemicals including histamine, bradykinin, and prostaglandins. These chemicals cause blood vessels to leak fluid into the tissues, causing swelling.

There is 1 question to complete.