Hey! I'm having trouble answering this for my assignment. Thankyou so much in advance.
1) Which type of vessels, arteries or veins, has more musclefibers? What is the functional significance of this?
2a) In general, we have no conscious control over smooth muscleor cardiac muscle function, whereas we can consciously control tosome extent all skeletal muscles. Can you consciously control yourbreathing? What does this tell you about the muscle type of thediaphragm?
2b) What is a portal system? What organs does the hepatic portalsystem connect in adults? What is the purpose of this system?
2c) Starting with the umbilical vein, list/chart the generalflow of blood through the fetus. What special features of the lungmake it a useful organ for gas exchange?
