Why are pelvic bone of a four-legged animal less massive than those of a human?

The pelvic bones of a four-legged animal, such as the cat or pig, are much less massive than those of the human. ... Because their pelvic bones don't have to bear the weight like our pelvic bones do. A person instinctively curls over the abdominal area in times of danger.

1. How does the shape of the pelvis differ in the two skeletons?
2. When thinking about the nature of the pelvic girdle Why does a person instinctively curl over his her abdomen in time of danger?
3. What organs are protected at least in part by the pelvic girdle?
4. Why do we have a pelvis?
5. Why are women's pelvis different?
6. How are human pelvis different from other primates?
7. What makes up the pelvic girdle?
8. What are the 4 bones of the pelvis?
9. Why the pelvic girdle is more stable than the pectoral girdle?
10. What does the pelvis bone protect?
11. What organs are protected by the pelvic bone?
12. Which of the following are the four functions of the pelvic girdle?
13. What is the difference between pelvic and pelvis?
14. Is the pelvis a strong bone?
15. What type of bone is the pelvis?

How does the shape of the pelvis differ in the two skeletons?

Pelvis: Humans have a much broader pelvis giving stability when walking upright as it transfers the weight directly to the legs. Humans have a more 'bowl shaped' pelvis to better support the organs above.

When thinking about the nature of the pelvic girdle Why does a person instinctively curl over his her abdomen in time of danger?

2. Answer: A person instinctively curls over the abdominal area in times of danger to protect the internal organs because this area is unprotected by bone.

What organs are protected at least in part by the pelvic girdle?

The pelvic girdle protects at least partially the reproductive system, urinary bladder and ducts, as well as the lower digestive tract.

Why do we have a pelvis?

"An important function of the pelvis region is to protect organs used for digestion and reproduction, though all its functions are crucial," she says. It protects the bladder, both large and small intestines, and male and female reproductive organs. Another key role is to support the hip joints.

Why are women's pelvis different?

The distance between the ischium bones is small in males. This causes the sides of the male pelvis to converge from the inlet to the outlet, whereas the sides of the female pelvis are wider apart. This results in the female inlet being large and oval in shape, while the male inlet is more heart shaped.

How are human pelvis different from other primates?

Changes in the iliac blade in our early ancestors compared with other primates are a response to fundamental needs for pelvic balance in bipedal walking, whereas changes in ischial and pubic shape are more complex.

What makes up the pelvic girdle?

In discussing the pelvis, a distinction can be made between the "pelvic spine" and the "pelvic girdle." The pelvic girdle, also known as the os coxae, Latin for “bone of the hip,” consists of the fused bones identified individually as the ilium, ischium, and pubis. ... Together these two parts form the bony pelvis.

What are the 4 bones of the pelvis?

The pelvis consists of four bones: the right and left hip bones, the sacrum, and the coccyx (see Figure 1). The pelvis has several important functions.

Why the pelvic girdle is more stable than the pectoral girdle?

The pelvic girdle allows greater mobility than the pectoral girdle. ... The pelvic girdle is more firmly attached to the axial skeleton than the pectoral girdle in order to provide the stability needed to support the weight of the upper body.

What does the pelvis bone protect?

Together with the sacrum and coccyx, the pelvic girdle forms a bowl‐shaped region, the pelvis, that protects internal reproductive organs, the urinary bladder, and the lower part of the digestive tract.

What organs are protected by the pelvic bone?

The curved nature of the pelvic bone creates a closed structure, itself lined with various muscles and housing various blood supplies, lymphatic structures, nerves, and organs, including the intestines, urinary bladder, and internal sex organs.

Which of the following are the four functions of the pelvic girdle?

pelvis, also called bony pelvis or pelvic girdle, in human anatomy, basin-shaped complex of bones that connects the trunk and the legs, supports and balances the trunk, and contains and supports the intestines, the urinary bladder, and the internal sex organs.

What is the difference between pelvic and pelvis?

The pelvis is a bony structure found in the lower part of the trunk of the human body. On the other hand, pelvic girdle is a part of the bony pelvic. Therefore, this is the key difference between pelvis and pelvic bone. ... Whereas, the pelvic girdle comprised of two hip bones.

Is the pelvis a strong bone?

The bony pelvis is the entire structure formed by the two hip bones, the sacrum, and, attached inferiorly to the sacrum, the coccyx (Figure 1). ... Thus, the immobility of the pelvis provides a strong foundation for the upper body as it rests on top of the mobile lower limbs.

What type of bone is the pelvis?

1. Flat Bones Protect Internal Organs. There are flat bones in the skull (occipital, parietal, frontal, nasal, lacrimal, and vomer), the thoracic cage (sternum and ribs), and the pelvis (ilium, ischium, and pubis). The function of flat bones is to protect internal organs such as the brain, heart, and pelvic organs.