Advertisements
Advertisements
Question
Paheli participated in a 400 m race competition held at her school and won the race. When she came home she had mixed feelings of joy and pain as she had cramps in her leg muscles. After a massage, she was relieved of the pain. Answer the following questions related to the situation.
- What can be the possible reasons for the pain in her legs?
- Why did she feel comfortable after a massage?
Solution
- The pain in her legs could be due to the accumulation of lactic acid in the muscles. During heavy exercise or running etc., our body does not get enough oxygen to produce the required energy. To get the additional energy, the muscle cells respire anaerobically. During this process, partial breakdown of glucose occurs to produce lactic acid which on accumulation causes muscle cramps.
- The massage gave her relief because it improves the circulation of blood resulting in an increased supply of oxygen to the muscle cells which helps the incomplete breakdown of lactic acid into carbon dioxide and water.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
In .................. respiration, food is completely oxidized into carbon dioxide, water, and energy.
State if the following statement is true or false. Correct the statement if it is false.
Respiration that takes place through the skin is called pulmonary respiration.
Answer the following in short.
Define cutaneous respiration?
Mention if the following statement is true or false. If false, rewrite them correctly.
All leaves of a green plant normally respire anaerobically at night.
In the absence of oxygen, glucose is broken down into ________.
Describe and name three stages of cellular respiration that aerobic organisms use to obtain energy from glucose.
From the following identify the correct description of anaerobic respiration.
In anaerobic respiration, CH3CHO is reduced to form alcohol by utilizing NADH2 obtained from ______.
Identify the coenzyme required by pyruvate dehydrogenase.
During glycolysis the compounds PGAL and DHAP are formed from fructose 1, 6 diphosphate by ____________.
