【評論主題】43. In vertebrates with four-chambered hearts, the ____ receives oxygenated blood directly from the

【評論內容】

左心房接受肺靜脈的充養血，左心房再將充養血打入左心室

【評論主題】38. Which one of the following hormones are not derived from cholesterol?(A)Testosterone.(B) Melaton

【評論內容】

Melatonin：褪黑激素，由松果腺分泌，為水溶性激素