What are the differences between a chimpanzees skeleton and a gorillas or an orangutans besides size?
Skeletal Differences:
- Skull:
- Chimpanzees have a more domed and rounded skull compared to gorillas and orangutans, which have more elongated skulls.
- Teeth:
- Gorillas have massive canine teeth, while chimpanzees have smaller and more human-like teeth. Orangutans have long, pointed upper canines.
- Spinal Column:
- Chimpanzees have a lumbar spine with 12 vertebrae, while gorillas have 13 and orangutans have 11.
- Ribs:
- Chimpanzees have 12 pairs of ribs, while gorillas have 13 and orangutans have 10.
- Pelvis:
- Chimpanzees have a wide and shallow pelvis, while gorillas have a narrower and deeper pelvis. Orangutans have a relatively narrower pelvis than gorillas.
- Limbs:
- Chimpanzees have longer arms and shorter legs compared to gorillas and orangutans. Orangutans have particularly long arms and short legs.
Additional Differences:
- Body Proportions: Chimpanzees have a more humanoid body shape, while gorillas have a more stocky build and orangutans have a more elongated body.
- Knuckle-Walking: Gorillas and orangutans are knuckle-walkers, meaning they use their knuckles to support their weight when moving on the ground. Chimpanzees do not typically knuckle-walk.
Related Questions:
- How many vertebrae are in a chimpanzee's lumbar spine?
- 12
- Which great ape has the smallest number of ribs?
- Orangutan
- Do chimpanzees have long or short arms?
- Long
- What is the primary difference between the pelvis of a gorilla and a chimpanzee?
- Width and depth
- True or False: Orangutans are the only great apes that can knuckle-walk.
- False
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