YMCA L3 Anatomy - Pelvic Girdle

The correct answer is Pubis symphysis. The pubic bones are joined together by a cartilaginous disc called the pubis symphysis. This joint is located in the front of the pelvis and allows for limited movement and flexibility during activities such as walking and childbirth.

The femur is the largest and strongest bone in the body. It is located in the thigh and is responsible for supporting the weight of the body and facilitating movement. The femur is designed to withstand large amounts of force and is crucial for activities such as walking, running, and jumping. Its size and strength make it an essential bone for overall body stability and mobility.

The coccyx is not a bone found in the pelvis. It is a small, triangular bone located at the base of the spine, below the sacrum. The pelvis is made up of three bones: the pubis, ischium, and ilium. These bones are responsible for supporting the weight of the upper body and connecting the spine to the lower limbs. The coccyx, on the other hand, serves as an attachment site for various muscles and ligaments but does not contribute to the structure of the pelvis.

The articulation at the pubis symphysis refers to the fusion of the pubic bones. The pubic bones are two bones located at the front of the pelvis, and they meet at the pubic symphysis, a cartilaginous joint. During development, the pubic bones gradually fuse together, forming a strong connection between them. This fusion provides stability and support to the pelvis, allowing for efficient transfer of forces during activities such as walking and running.

The correct answer is Acetabulum. The acetabulum is a deep cup-shaped socket located in the pelvis where the head of the femur (thigh bone) sits. It forms the hip joint, allowing for smooth movement and stability of the leg. The other options listed (Iliac crest, Ischium, Medial condyle) are not correct as they are not related to the specific structure described in the question.

The pubis symphysis is a cartilaginous joint. This type of joint is characterized by the presence of cartilage between the bones, which allows for limited movement. In the case of the pubis symphysis, it is the joint between the two pubic bones in the pelvis. The cartilage in this joint helps to absorb shock and provide stability to the pelvis during movement.

The main role of the pelvic girdle is to transmit the weight of the upper body to the lower limbs. It provides a stable base for the spine and supports the weight of the torso, allowing for efficient movement and locomotion. The pelvic girdle also plays a crucial role in maintaining balance and stability during various activities such as walking, running, and standing.

The ilium is one of the three bones that make up the pelvis, along with the ischium and pubis. It articulates with the sacral bones to form the sacroiliac joint. The sacroiliac joint is a strong, weight-bearing joint that connects the sacrum (the triangular bone at the base of the spine) to the ilium on either side. This joint provides stability and allows for a small amount of movement in the pelvis.

The female pelvis is characterized by a deeper, wider oval shape, a pelvic angle that tilts anteriorly, and a larger Q angle. The acetabulum, which is the socket of the hip joint, is not almost vertical in the female pelvis. Instead, it is angled more laterally. This difference in the orientation of the acetabulum is one of the distinguishing features between the male and female pelvis.

The pelvic angle tilting anteriorly is not a characteristic of the male pelvis. The male pelvis typically has a pelvic angle that tilts posteriorly, while the female pelvis has a pelvic angle that tilts anteriorly. This difference in pelvic angle is one of the key anatomical distinctions between the male and female pelvis.

During pregnancy, the hormone relaxin is released which helps to relax the ligaments and joints in the body, including the pubis symphysis. This relaxation allows for increased flexibility and movement in the pelvis to accommodate the growing fetus and prepare for childbirth. As a result, the pubis symphysis can increase in width. Therefore, the correct answer is 9mm, as this is the measurement that represents the potential increase in the pubis symphysis during pregnancy.

The labrum holds the femur in place within the acetabulum. The labrum is a ring of cartilage that surrounds the rim of the acetabulum, providing stability and cushioning to the hip joint. It helps to deepen the socket and increase the contact area between the femur and the acetabulum, ensuring a secure fit and preventing dislocation of the hip joint.