What part of the femur articulates with the tibia to form the knee joint?

The patella articulates with the tibia to form the knee joint.

Explanation:

Patella is called the knee cap and it gives protection to the knee.  Femur is the longest bone in the body and has the function of supporting the weight of the body and enhancing the movement of the legs. The knee joint permits the extension of the lower leg relative to the thigh.

It allows a 120 degree movement unlike other joints that allow lesser freedom of movement. Patella is the part of the femur that articulates with the tibia and forms the knee joint.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.