Why do they have a fist at the end of the lances?

How do Hawaiian Monk Seals digest food? Where can you find information about diagnosis of whooping cough? Can you have symptoms of pregnancy in 5 days before missed period? Why do Ears buzz or ring only after drinking alcohol? How many surrogate mothers end up keeping the child? What are the dangers with a nipple ring? What are the 4 rs of CPR? What happens to your body that makes you get the hiccups? Is there a homemade cure for heather blindness in sheep? Has anyone had burning numbness in hand after carpal tunnel surgery? Is achool a depressant? Why do some people become warm after alcohol? How many hours is the blood could be exposed from the blood bank before transfusion? What is a shelter made of bufallo skin called? What is the antibody-producing cell that plays an important role in protecting us from infection? How did the circulatory system get its name? Why can determining gender from a skull be difficult? Why does plasma color is pale yellow? Why does your dad have a jock strap? Is there a cure for premature atrial contractions?