Explain why the bones of the pelvic girdle must be more substantial than the bones of the pectoral girdle. Make a note of which bones are included in the pelvic girdle and the pectoral girdle. Explain how weightlessness could influence the skeletal system as well.
Astronauts, for example, deal with this challenge when in space. How may observations of astronauts help researchers understand a disorder like osteoporosis and create treatments for it?
Overview
The bony pelvis is seen in the Pelvic Girdle Anatomy. It contains the pelvic skeletal framework, which encloses the pelvic structures. In general, it is divided into two parts: the pelvic spine and the pelvic girdle. The pelvic spine is the part of the pelvis that comes following the lumbar spine. It is made up of the coccyx and the sacrum. The hip bone, often known as the pelvic girdle, is made up of three bones: the ilium, the ischium, and the pubic bone.
The pelvic girdle is made up of two separate bones termed coxal bones (hip bones) that are closely connected to the sacrum of the spinal column. Unlike the pectoral girdle, which allows for more movement, the hip bones allow for very restricted movement and offer a sturdy basis for the body.
Anatomy and Functions of the Hip Bone
The hip bone (coxal bone) is a bony pelvic structure with an uneven form. A single hip bone, or coxal bone, makes up each half of the pelvic girdle.
Coxal bone is formed by the fusing of three bones: ilium, ischium, and pubis.
The greatest component of the coxal bone is the ilium. It is the top portion with a fan-like structure. The sacroiliac joint is firmly linked to the sacrum of the spinal column.
The ischium is the portion of the pelvic girdle that is below the ilium. It gives sitting support.
