Elements of Biology: A Practical Text-book Correlating Botany, Zoology, and Human PhysiologyAmerican Book Company, 1907 - 445 páginas |
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Página 261
... ventricle . The dark lines on the mantle and foot are blood vessels . Davison , Zoology . Circulation of Water over Gills . We have already observed that a more or less constant circulation of water takes place ; carmine entering ...
... ventricle . The dark lines on the mantle and foot are blood vessels . Davison , Zoology . Circulation of Water over Gills . We have already observed that a more or less constant circulation of water takes place ; carmine entering ...
Página 262
... an auricle , which receives the blood , and a ventricle , which by muscular contraction pumps the blood on its course . The heart is surrounded by a thin - walled pericardium or bag . The intestine passes directly through the 262 ZOÖLOGY.
... an auricle , which receives the blood , and a ventricle , which by muscular contraction pumps the blood on its course . The heart is surrounded by a thin - walled pericardium or bag . The intestine passes directly through the 262 ZOÖLOGY.
Página 274
... ventricle . The blood is pumped from the heart to the gills ; there it loses some of its carbon dioxide ; it then passes on to other parts of the body , eventually breaking up into very tiny tubes called capillaries . From the ...
... ventricle . The blood is pumped from the heart to the gills ; there it loses some of its carbon dioxide ; it then passes on to other parts of the body , eventually breaking up into very tiny tubes called capillaries . From the ...
Página 280
... ventricle . Most amphibians undergo a com- plete metamorphosis . Life Habits of Green Frog . The green frog inhabits shallow fresh - water ponds , streams , and marshes . Much of the daytime they may be seen sunning themselves . They ...
... ventricle . Most amphibians undergo a com- plete metamorphosis . Life Habits of Green Frog . The green frog inhabits shallow fresh - water ponds , streams , and marshes . Much of the daytime they may be seen sunning themselves . They ...
Página 350
... ventricle , and a broader portion , which is darker in color . This latter area is made up of the two auricles . Compare the two areas of the heart in position . The auricles , according to their position , are called respectively the ...
... ventricle , and a broader portion , which is darker in color . This latter area is made up of the two auricles . Compare the two areas of the heart in position . The auricles , according to their position , are called respectively the ...
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adapted alcohol American Book Company amount animals arteries auricle bacteria bean birds blood vessels body cavity bone brain breathing called capillaries carbon dioxide caused cerebrum color colorless corpuscles containing corn cotyledons crustaceans digestive disease dorsal eggs especially example experiment fats fibers fish flower fluid food tube frog fruit function germinate gills glands grain growth heart heat Hunter and Valentine insects intestine kidney known laboratory lacteals large number larvæ layer leaf leaves legs liver living lungs means membrane mouth movement muscles muscular nerve cells nervous system nitrogen Notice organs outer ovary oxidation oxygen pass Physiology plant poison pollen proteid protoplasm respiration root hairs seeds seen shell side skeleton skin soil spinal spores stamens starch stem stomach stomata structure substance sugar surface sympathetic nervous system teeth temperature tiny tion tissues tree veins ventricle vertebral vertebral column walls young Zoology