Pulmonary vein returns blood from the lungs into the of the heart

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

In which cell structure does thevprocess of photosynthesis take place

Catalina ate a candy bar and then went on a fast-moving ride in an amusement park. she was sick to her stomach after the ride and now, catalina cannot eat candy bars, because they make her nauseous. in this learned association, the candy bar serves as a(n) to catalina.