Sarah and Jane were playing basketball. They collided and fell. Sarah’s knee was lightly bruised. Jane’s elbow was scratched, causing a little blood to ooze out. After a few days, Jane observed pus formation around the scratch on her elbow, while Sarah’s knee was fine. The pus formation on Jane’s elbow is a result of . The receptors on the sensed the pain that Jane experienced. NextReset

Question

13-02-2018
Biology

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Sarah and Jane were playing basketball. They collided and fell. Sarah’s knee was lightly bruised. Jane’s elbow was scratched, causing a little blood to ooze out. After a few days, Jane observed pus formation around the scratch on her elbow, while Sarah’s knee was fine. The pus formation on Jane’s elbow is a result of . The receptors on the sensed the pain that Jane experienced. NextReset

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danilosanmartin danilosanmartin · Answer 1 · 2018-02-21T02:38:58+01:00

This is because Jane's elbow was scratched. The human skin as a normal flora mostly consisting of Staphylococcus aureus and Streptococcus pyogenes. Any breaks in the skin will let the flora invade the inside of the body and cause a local inflammatory reaction and liquefactive necrosis (formation of pus). Sarah's knee was fine because the knee is just bruised but the skin remained intact and the normal flora cannot invade an intact skin.

ArnimZola ArnimZola · Answer 2 · 2019-07-17T04:55:54+02:00

Answer:

1. The pus formation on Jane’s elbow is a result of: Inflammation

2. The receptors on the sensed the pain: Cutaneous receptors of dermis

Explanation:

The inflammatory reaction is a non specific immune response against the entry of pathogen or any damage to tissues caused by physical or chemical factors. It includes the arrival of phagocytes at the site of infection to kill the entered pathogen. The pus includes the dead pathogens, dead tissue cells and some cells of the immune system. Hence, pus was formed on Jane's elbow as a result of the inflammatory response against tissue damage.

Some of the cutaneous receptors present in the dermis of skin serve as pain receptors. The pain experienced by Jane is actually sensed by pain receptors present in the dermis of the damaged region of the elbow.