"Please tell me more, I do not quite understand"
Answer:The esophagus is a muscular tube connecting the throat (pharynx) with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called mucosa. The esophagus runs behind the windpipe (trachea) and heart, and in front of the spine.
Explanation:
Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.
Explanation:
hope this helps...
and if u didn't get it its veins...
Answer:
There is 2 sides to doing a full body workout in the morning. One would be that it would be the best because it would wake you and ur body up and make you ready for your day and feel more energetic and more accomplished. However the other side is no because it does have the risk of you possibly of you getting a injury because you might do the workout before having something to eat which might make you feel sick and could have the possibility of you tear or pulling a ligament if you don't stretch.
