The lumbosacral joint is the articulation between which two structures?

Correct answer: Body of L5 vertebra and sacrum

Explanation

The lumbosacral joint is the articulation between the fifth lumbar vertebra (L5) and the first sacral vertebra (S1). It is a critical weight-bearing joint that transitions the mobile lumbar spine to the fixed pelvis.

Other questions

Question 1

In the male pelvic diaphragm, which three muscles are identified as parts of the levator ani muscle?

Question 2

What is the approximate measurement of the transverse diameter of the female pelvic inlet?

Question 3

Which ligament attaches to the ischial spine and separates the greater sciatic foramen from the lesser sciatic foramen?

Question 4

In the female pelvis, what structure passes through the deep and superficial perineal spaces and is located just inferior to the pubic symphysis?

Question 5

What is the relationship between the true conjugate and the diagonal conjugate of the pelvic inlet?

Question 6

Which landmark is used to identify the location of the spinoumbilical line for McBurney's point?

Question 7

What structure is formed by the tendinous arch of the levator ani muscle?

Question 8

In a superior view of the female pelvic contents, what ligament is seen extending anterolaterally from the uterus towards the deep inguinal ring?

Question 9

Which of the following is a characteristic feature of the male pelvis when compared to the female pelvis?

Question 10

The piriformis muscle, a key landmark in the gluteal region, exits the pelvis through which foramen?

Question 11

Which two bones articulate at the sacroiliac joint?

Question 12

In the inferior view of the male pelvic diaphragm, the circular muscle layer and conjoined longitudinal muscle are identified as forming what structure?

Question 13

What is the collective term for the deep and superficial transverse perineal muscles in the female pelvis?

Question 14

Which pelvic ligament forms the inferior border of the lesser sciatic foramen?

Question 15

The rectoprostatic (Denonvilliers') fascia in the male is located between which two structures?

Question 16

What is the name of the median raphe of the levator ani muscle?

Question 17

Which part of the hip bone is described as having an inner lip, an intermediate zone, and an outer lip?

Question 18

In the female, what is the term for the fibromuscular structure that consists of portions of the sphincter urethrae muscle and is located inferior to it?

Question 19

Which structure forms the superior boundary of the pubic arch?

Question 20

The coccygeus muscle, part of the pelvic floor, has what relationship to the sacrospinous ligament?

Question 21

Which of the following ligaments is NOT part of the bony framework of the pelvis as depicted in Plate 338?

Question 22

What is the name of the most anterior muscle component of the levator ani group, which forms a sling around the anorectal junction?

Question 23

The subpubic angle is a feature seen on which radiograph?

Question 24

What structure is located within the fat of the retropubic (prevesical) space in the male pelvis?

Question 25

In the female, the deep dorsal vein of the clitoris is located immediately posterior to what structure?

Question 26

What is the anteroposterior diameter of the female pelvic outlet, accounting for the mobility of the coccyx?

Question 27

The obturator canal, which allows passage of the obturator nerve and vessels, is located in which part of the pelvis?

Question 28

In a superior view of the male pelvic diaphragm with viscera removed, what structure lies immediately posterior to the hiatus for the deep dorsal vein of the penis?

Question 29

The anococcygeal body in the female serves as an attachment point for which muscle?

Question 30

Which bony landmark is found on the ilium, superior to the acetabulum and inferior to the iliac crest?

Question 31

Which structure forms the boundary of the pelvic inlet, separating the greater (false) pelvis from the lesser (true) pelvis?

Question 32

In a sagittal view of the female pelvis, what is the term for the fold of peritoneum extending between the uterus and the urinary bladder?

Question 33

What is the median articulation between the two pubic bones called?

Question 34

Which part of the levator ani muscle is most lateral and originates from the tendinous arch?

Question 35

What is the name of the ligament that runs from the sacrum and coccyx to the ischial tuberosity?

Question 36

In the radiograph of the female pelvis in Plate 335, what is the large opening bounded by the ischium and pubis?

Question 37

What is the collective name for the muscles that occupy the deep perineal pouch in a male?

Question 38

The arcuate line is a feature of which pelvic bone?

Question 39

In the superior view of the female pelvic contents, which structure lies in the pararectal fossa?

Question 40

Which ligament connects the L5 vertebra to the iliac crest?

Question 41

What is the term for the peritoneal fold that contains the ovarian vessels and suspends the ovary from the pelvic wall?

Question 42

The greater sciatic notch of the ilium is converted into the greater sciatic foramen by which ligament?

Question 43

Which structure forms the lateral wall of the pelvis and is covered by a fascia from which the levator ani originates?

Question 44

What are the anterior and posterior boundaries of the pelvic outlet?

Question 46

In a female, the tendinous arch of the levator ani serves as a point of origin for which muscle?

Question 47

What is the name for the peritoneal fold that contains the obliterated umbilical artery in a superior view of the female pelvic contents?

Question 48

Which structure passes through the lesser sciatic foramen?

Question 49

The head of the femur articulates with which part of the hip bone?

Question 50

Which of these structures provides posterior support to the pelvic contents and is located superior to the coccygeus muscle?