Back Pain Back Pain Anatomy and Physiology 3

Question 1

Which pain receptor type in the annulus fibrosus is responsible for discogenic back pain?

Accepted Answer

Nociceptors

Answer

Pacinian corpuscles

Answer

Meissner corpuscles

Answer

Merkel discs

Question 2

The sacroiliac (SI) joint connects which two structures?

Accepted Answer

Sacrum and ilium

Answer

Femur and pelvis

Answer

L5 and S1 vertebrae

Answer

Coccyx and sacrum

Question 3

Which lumbar disc level is most commonly involved in herniation causing sciatica?

Accepted Answer

L4–L5 or L5–S1

Answer

L1–L2

Answer

L2–L3

Answer

L3–L4

Question 4

What is the primary function of the annulus fibrosus?

Accepted Answer

Contain the nucleus pulposus and resist torsional forces

Answer

Produce cerebrospinal fluid

Answer

Conduct nerve impulses

Answer

Secrete synovial fluid

Question 5

Facet joints (zygapophyseal joints) are classified as which type of joint?

Accepted Answer

Synovial joint

Answer

Fibrous joint

Answer

Cartilaginous joint

Answer

Gomphosis

Question 6

Which muscle originates on the lumbar vertebrae and inserts on the lesser trochanter, and is often implicated in hip flexor tightness causing back pain?

Accepted Answer

Psoas major

Answer

Rectus femoris

Answer

Gluteus medius

Answer

Piriformis