The greater sciatic foramen:

Question

BlackTom AI · Accepted Answer

The question asks about the greater sciatic foramen and what it provides passage for.

Option 1: 'Provides passageway for the obturator nerve.' The obturator nerve travels through the obturator canal to reach the medial thigh, not through the greater sciatic foramen. Therefore this statement is incorrect.

Option 2: 'Provides passageway for the obturator internus muscle.' The obturator internus muscle exits the pelvis via the lesser sciatic foramen after exiting the obturator canal, not through the greater sciatic foramen. Hence this option is misleading and false.

Option 3: 'Provides passageway for the piriformis muscle.' The piriformis muscle traverses the greater sciatic foramen to reach the gluteal region, making this statement true. This aligns with the anatomical fact that the piriformis passes through this foramen.

Option 4: 'Is closed by the interosseous sacroiliac ligament.' The interosseous sacroiliac ligament strengthens the sacroiliac joint, not the boundaries of the greater sciatic foramen. The foramen is bounded by the ilium, ischium, sacrum, and reinforced by the sacrotuberous and sacrospinous ligaments; calling it closed by the interosseous sacroiliac ligament misstates its anatomy. Therefore this option is incorrect.

In evaluating the options, the only statement that accurately reflects the anatomy of the greater sciatic foramen is the one describing the passage of the piriformis muscle, while the other choices misidentify the structures associated with this foramen or misstate its anatomical boundaries.

ANAT30008_2025_SM2 Exam: Viscera and Visceral Systems - Theory (ANAT30008_2025_SM2)- Requires Respondus LockDown Browser

The greater sciatic foramen:

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ANAT30008_2025_SM2 Exam: Viscera and Visceral Systems - Theory (ANAT30008_2025_SM2)- Requires Respondus LockDown Browser

The greater sciatic foramen:

查看解析

登录即可查看完整答案

类似问题

The diagnostic term "Genu Varum" means:

Question at position 5 Which of the following covers the anterior carpal bones and creates the carpal tunnel?Palmaris longusExtensor retinaculumFlexor retinaculum

The agonists for trunk rotation to the right are:

Of the muscles listed below, select the muscles that cross both the hip and knee joint?

The image above demonstrates __ [ Select ] anterior rotation posterior rotation lateral rotation rotation __ to the __ [ Select ] right left __

Question at position 12 The bladder is located within the peritoneal cavity, posterior to the pubic symphysis.TrueFalse

Question at position 35 The hepatic artery delivers ______ blood from the heart to the liver.OxygenatedDeoxygenatedNutrient-richPartially oxygenated

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The image above demonstrates [ Select ] anterior rotation posterior rotation lateral rotation rotation to the [ Select ] right left