Introductory Biology |
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Page 188
... contraction of muscles has been studied very thoroughly . In Fig . 83 , the apparatus which is used to record the contraction of a muscle is shown . To prepare for such study a muscle is removed from an animal , preferably a cold ...
... contraction of muscles has been studied very thoroughly . In Fig . 83 , the apparatus which is used to record the contraction of a muscle is shown . To prepare for such study a muscle is removed from an animal , preferably a cold ...
Page 191
... contraction . As a consequence the activity period may be divided into three parts ( Figs . 85 and 86 ) . The first part is called the period of treppe . During this period the ability of the muscle to contract is obviously increasing ...
... contraction . As a consequence the activity period may be divided into three parts ( Figs . 85 and 86 ) . The first part is called the period of treppe . During this period the ability of the muscle to contract is obviously increasing ...
Page 192
... contraction . These facts appear to indi- cate that during contraction something is formed which ultimately brings about fatigue . We shall presently see what this substance prob- ably is . At this time it might be well to mention an ...
... contraction . These facts appear to indi- cate that during contraction something is formed which ultimately brings about fatigue . We shall presently see what this substance prob- ably is . At this time it might be well to mention an ...
Contents
INTRODUCING LIVING ORGANISMS | 2 |
HOW ORGANISMS SECURE FOOD | 14 |
A BALANCED DIET FOR MAN | 24 |
Copyright | |
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alleles amino acids arteries auricle auxin bacteria birds blood cells blood vessels body bones brain called capillaries carbon dioxide cavity chemical chlorophyll chromosomes clot coelom color contraction cord cytoplasm diffusion digestive disease earthworm embryo energy enzymes factors fats fibers flow fluid forest function gametes gametophyte genes glands glucose grow growth hair heart hemoglobin hormones human hybrid hydra impulses increase infection intestine kidneys known layer leaves living lungs lymph mammals materials mechanism membrane metabolism molecules muscle muscular nerve nervous system neurons normal occur organisms oxidation oxygen pair phloem photosynthesis plasma pressure produce proteins protoplasm receptors reproductive respiratory result root salts seed sex organs skin soil species sperms spinal spores sporophyte starch stem stimulation structure substances sugar supply surface synthesis teeth temperature tion tissue tract trees tube tubules vacuole valves veins ventricle vertebrates vitamin walls xylem