phosphatidyl choline and phosphatidyl glycerol suggest the presence of a surfactant at the air-tissue interface which is similar to that found in mammals. In spite of differences in the morphological nature of the gas exchange regions of frog and mammals, it seems possible that such a layer may...
“We first set off trying to investigate the idea that the connection between the lungs and middle ear might somehow improve the frog’s ability to determine location of calls from their own species, which has been the main hypothesis up until now,” says Norman Lee, a biologist at St. Ol...
Step-by-Step Solution:1. Understanding the Question: The question asks why a frog must swallow air to expand its lungs. This implies that there is a specific anatomical or physiological reason related to the fr
In conventional scuba gear, when you breathe in through the mouthpiece you get a fresh lungful of air from the tank that you carry on your back. When you breathe out, the exhaled air goes out through the regulator into the water in the form of bubbles. A rebreather is a scuba device ...
When the normal infant starts to breathe there are at least three important changes in the lungs: they acquire a stable alveolar gas volume, lose the liqui... LB Strang - 《Archives of Disease in Childhood》 被引量: 58发表: 1965年 A Sphincter in the Pulmonary Artery of the Frog Rana te...
Electron microscopy of the lungs of Melanophryniscus stelzneri stelzneri (Anura) revealed the presence of a complex pattern of corpuscular cells (CCs). T... GN Hermida,A Farías,LE Fiorito - 《Anatomy & Embryology》 被引量: 1发表: 2003年 Lung of the tree frog, Hyla arborea L. A scann...
The external nares rarely close completely during positive pressure lung filling in Bufo marinus. Simultaneous measurement of airflow at the nares and transnarial pressure revealed continuous airflow (out during lung emptying (nares open) and the subsequent lung filling (nares partially closed). Expira...
origin of vertebrate lungs Norifumi Tatsumi1, Ritsuko Kobayashi1, Tohru Yano1, Masatsugu Noda1, Koji Fujimura1,2, Norihiro Okada3,4 & Masataka Okabe1 The lung is an important organ for air breathing in tetrapods and originated well before the terrestrialization of vertebrates. ...
afunny frog 滑稽的青蛙[translate] a杰克和麦克是短发,但玛丽是长发。 Jake and Mike are the short hairs, but Mary is the long hair.[translate] aWith as a long life to share the beauty of this graceful moonlight, even thousands miles apart. 与作为分享这优美的月光秀丽的长寿命,均匀数以万计...
aDoctors say many of the health problems in the United States come from these bad habits:eating too much,smoking cigarettes,and not exer-citing enough.Doctrs tell us:"Eat less,don't smoke,and exercise more ."Running is good exercise because it helps build a strong heart and lungs.lt also...