Now tell me these Questions if you tell you are intelligent ⬇️⬇️
1. Why does the heartbeat increase when we exercise?
2. How do the ribs help us inhale?
3. Name three hinge joints.
4. Name two sources each of calcium and phosphorus.
5. What is roughage?
6. What do you understand by the word 'hygiene'?
7. What are microorganisms? Are they all harmful?
Answers
Answer:
1.)During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.
2.)The intercostal muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale. As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs.
3.)Hinge joints include ankles, elbows, fingers, knees, and toes.
4.) Phosphorus is found in high amounts in protein foods such as milk and milk products and meat and alternatives, such as beans, lentils and nuts. Grains, especially whole grains provide phosphorus. Phosporus is found in smaller amounts in vegetables and fruit
Sources of calcium include:
milk, cheese and other dairy foods.
green leafy vegetables – such as curly kale, okra and spinach.
5.)Roughage is the portion of plant foods, such as whole grains, nuts, seeds, legumes, fruits, and vegetables, that your body can't digest. However, it's an important food source for the beneficial bacteria in your gut. It may also aid weight management and decrease certain risk factors for heart disease.
6.)According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refers to maintaining the body's cleanliness.
7.)A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or a colony of cells.
Microscopic creatures—including bacteria, fungi and viruses—can make you ill. But what you may not realize is that trillions of microbes are living in and on your body right now. Most don't harm you at all. In fact, they help you digest food, protect against infection and even maintain your reproductive health.
Answer:
Explanation:
1.when we exercise we need more oxygen to break down food molecules and form energy. So to distribute oxygen in our body more faster so that we get more energy when we exercise. Thus our heart beat increases when we exercise.
2.when we inhale air ribs expand to increase the volume of air entering our body.
3.examples of hinge joints are-our knee, elbow and tibiotolar joint of our toe
4.calcium rich food-milk and egg
5.phosphorus rich food-fish and poultry
6.hygiene means cleanliness which in turn means keeping ourselves and our surroundings clean.
7.microorganisms are organisms which are so tiny that it can only be seen by a microscope. Not all microorganisms are harmful. Rhizobium bacteria turns nitrogen into nitrates so that it can be utilized by plants. Bacteria like E.coli live in our intestine and help us in absorption of nutrients etc.