7. i) Write main function of:
a) Epiglottis
b) Salivary glands
c) Haemoglobin
d) Teeth
e) Alveoli of lungs
Answers
Answer:
7. i) main function of:
a)epiglottis:- The epiglottis is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.
b)salivary glands:- The salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist. It also helps break down carbohydrates (with salivary amylase, formerly known as ptyalin) and lubricates the passage of food down from the oro-pharynx to the esophagus to the stomach.
c)haemoglobin:-About 70 percent of your body's iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues. Myoglobin, in muscle cells, accepts, stores, transports and releases oxygen.
d)teeth:-Teeth have three main functions of “breaking down (masticating) food”, “enabling us to pronounce words”, and “shaping the face”. Permanent teeth are the teeth you use for your entire life. Please take good care of your teeth by understanding their roles.
e)alveoli of lungs:-The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.