How does the structure of a chimpanzee pelvis differ from the structure of a human pelvis? What is âknuckle-walkingâ? Give an example of a primate that is a âknuckle-walkerâ? Why must this animal walk using this posture? List three ways to distinguish between a human male and human female pelvis.
How does the structure of a chimpanzee pelvis differ from the structure of a human pelvis? What is âknuckle-walkingâ? Give an example of a primate that is a âknuckle-walkerâ? Why must this animal walk using this posture? List three ways to distinguish between a human male and human female pelvis.
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
Related questions
Bipeds have __ in comparison to knuckle walkers.
longer tail for balance |
shorter legs in relation to arms |
more equal arm and leg length |
longer legs in relation to arms |
To faciliate efficient bipedal locomotion, the pelvis should be
basin shaped |
behind the spine to keep the weight off the pelvis |
flat and wide |
long and narrow |
The foot of a hominin
all of these |
should have a high arch |
has an enlarged big toe |
has the big toe inline with other toes |
In hominins, the foramen magnum is positioned
forward, at the base of the skull |
wide for balance |
laterally, to either the left or right side |
at the back of the skull |
In a biped, the __ should be angled toward the midline from the hip point to knee joint to keep the torso positioned over the center of gravity.
ossa coxae |
spine |
femur |
foramen magnum |
A comparision between the spine of a human and that of a great ape shows that a human spine
has three distinct curves - two backward and one forward - for balance |
should have two distinct curves to keep the weight centered above the pelvis |
is "C" shaped as a result of one backward curve in order to keep the trunk over the legs |
is straight in order to facilitate upright posture |
The ossa coxae and the sacrum make up the
pelvis |
cranium |
foot |
spine |
Hominins are committed to bipedalism and cannot locomote efficiently in any other way, in other words
obligate bipeds |
a generalized adaptation |
the hominin foot is the only part of the body structured for this purpose |
similar to most members of the order primates |