Lumbar Region

Question 1

Responsible for maintaining an erect porture located in vertebrae

Answer 1

Erector spinae muscles

Question 2

Erector spinae composed 3 columns

Answer 2

Iliocostalis
Longissimus
Spinalis

Question 3

Most lateral columb of the erector spinae muscles

Answer 3

Iliocostalis

Question 4

Iliocostalis have 3 parts

Answer 4

Iliocostalis lumborum
Iliocostalis thoracis
Iliocostalis cervicis

Question 5

Muscles located in intermediate position

Answer 5

Longissimus

Question 6

These muscles assist in extension, lateral flexion, and rotation of the spine

Answer 6

Longissimus

Question 7

The most medial group of the erector spinae

Answer 7

Spinalis

Question 8

These muscles aid to extension and lateral flexion if the spine

Answer 8

Spinalis

Question 9

Nerve supply of quadratus lumborum: This muscles is supplied by the lumbar plexus

Answer 9

This muscles is supplied by the lumbar plexus

Question 10

Action of quadratus lumborum:

Answer 10

Fixes or depressed the 12th rib during respiration and laterally flexes the vertebral column to the same side

Question 11

Arises below from the iliolumbar ligament the adjoining part of the iliac crest

Answer 11

Quadratus lumborum

Question 12

Fibers run upward and medially inserted into the lower border of the 12th rib and transverse process of the upper 4 lumbar vertebrae

Answer 12

Quadratus lumborum

Question 13

The fibers run downward and laterally and leave the abdomen to enter the thigh by passing behind the inguinal ligament

Answer 13

Psoas major

Question 14

Action of psoas:

Answer 14

Flexes the thigh at the hip joint on the trunk or if the thigh is fixed, it flexes the trunk on the thigh

Question 15

Fan shaped and arises from the upper part of the iliac fossa

Answer 15

Iliacus

Question 16

Nerve sup

Question 17

Nerve supply of iliacus:

Answer 17

Femoral nerve, a branch of lumbar plexus

Question 18

Action of iliacus:

Answer 18

Iliopsoas the thigh on the trunk at the hip joint, or if the thigh is fixed, it flexes the trunk on the thigh

Question 19

Thin sheet of muscles that lies deep to the internal oblique, and its fibers run horizontally forward

Answer 19

Transversus