Spider Monkey
Spider Monkeys like most species in the phylum chordata have an endoskeleton, meaning it has a skeleton latent under its skin.
Spider Monkeys are billaterally symmetrical, capable of division into symmetrical halves by only one longitudinal plane passing through the axis, due to their two circuits their pulmonary and systemic circuits.
Their pulmonary circuit is when the heart is responsible for pumping the blood to every cell in the body. In their systemic circuit, blood leaves the heart through the aorta, goes to all the organs of the body through the systemic arteries, and then returns to the heart through the systemic veins.
Spider Monkeys are billaterally symmetrical, capable of division into symmetrical halves by only one longitudinal plane passing through the axis, due to their two circuits their pulmonary and systemic circuits.
Their pulmonary circuit is when the heart is responsible for pumping the blood to every cell in the body. In their systemic circuit, blood leaves the heart through the aorta, goes to all the organs of the body through the systemic arteries, and then returns to the heart through the systemic veins.
A monkey has a very similar skeletal structure to a human, however cannot walk bipedally, on two legs, also a human's arm bones, the ulna, radius, humerus, etc. are going to be about 70% of the size of it's leg bones, the femur, fibula, tibia, etc. and depending on how the monkey moves this number is different. Monkeys along with walking swing from vines, jump and crawl to get from place to place this is what makes the monkey different from the human.