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(a) What are the immediate effects of exercise on the functions of (i) the heart, (ii) the lungs, (iii) the liver?
(b) How do these changes help to meet the needs of exercise?
a) Exercise enhances the heart rate and the volume of blood expelled at each contraction (stroke volume); the rate and depth of breathing enhance; the liver changes more glycogen to glucose.
b) These changes supply the extra oxygen and glucose that the active muscles require for their enhanced respiration. The extra carbon dioxide from respiration is deleted as fast as it accumulates
How might the destruction of large areas of tropical rain forest have world-wide consequences? As plants consume CO 2 during photosynthesis, extensive deforestation could resu
Q. What is the normal duration of the menstrual cycle? How does the calendar contraceptive method work? The normal duration of the menstrual cycle is 28 days but it can vary am
Technique of Operation : TEE probe is passed in all cases soon after anaesthesia. The initial steps and exposure of mitral valve are done as for open mitral valvotom
GREGOR JOHANN MENDEL 1. Mendel was born on 22 July 1822 at Heizendorf in Austria at Selesia village. 2. Mendel was worked in Augustion Monastry as monk at Br
A decrease in parasympathetic discharge to the heart leads to A. a decrease in the conductance of F-channels in SA node cells. B. an increase in the conductance of potassium
Companion cells are the specialized cells in the phloem which load sugars into the sieve elements and help to maintain a functional plasma membrane in the sieve elements.
State Cryptobiosis and explain the function of it. A dormant, or suspended, state of animation which allows some animals to survive severe conditions like extremely low tempera
Describe how electro negativity can explain why a C-H bond is a no polar covalent bond, but a O-H bond is a polar covalent bond.
Define Exclusion chromatography - basic separation technique? It is a chromatographic process, in which separation of the sample components takes place according to the molecul
Describe the Complete transposition of great arteries ? Lethal, relatively frequent malformation. Without treatment, it results in 30 per cent mortality within the first week o
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