Lumbar spine

Question 1

What is the primary function of the psoas major muscle?

Answer 1

Hip flexion and stabilization of the lumbar spine.

Question 2

Which nerve innervates the psoas major muscle?

Answer 2

Lumbar plexus (L1-L3).

Question 3

True or False: The iliacus muscle assists in hip flexion.

Answer 3

True.

Question 4

What are the functions of the quadratus lumborum muscle?

Answer 4

Lateral bending of the trunk and stabilization of the pelvis.

Question 5

Which nerve is responsible for innervating the quadratus lumborum?

Answer 5

T12-L4 spinal nerves.

Question 6

Fill in the blank: The __________ muscle is involved in trunk extension and is innervated by the dorsal rami of spinal nerves.

Answer 6

erector spinae.

Question 7

What is the role of the multifidus muscle in the lumbar spine?

Answer 7

Stabilization of the vertebrae during movement.

Question 8

Which nerves innervate the multifidus muscle?

Answer 8

Dorsal rami of spinal nerves.

Question 9

True or False: The transversus abdominis muscle plays a role in lumbar spine stability.

Answer 9

True.

Question 10

What is the primary function of the rectus abdominis muscle?

Answer 10

Trunk flexion.

Question 11

Which nerve innervates the rectus abdominis?

Answer 11

Lower thoracic nerves (T7-T12).

Question 12

Multiple Choice: Which muscle is NOT part of the lumbar spine muscles? A) Psoas Major B) Latissimus Dorsi C) Quadratus Lumborum

Answer 12

B) Latissimus Dorsi.

Question 13

What is the function of the external oblique muscle?

Answer 13

Trunk rotation and lateral flexion.

Question 14

Which nerves innervate the external oblique muscle?

Answer 14

Lower thoracic nerves (T7-T12).

Question 15

Fill in the blank: The __________ muscle assists in forced expiration and is innervated by the lower thoracic nerves.

Answer 15

internal oblique.

Question 16

What is the role of the diaphragm in relation to the lumbar spine?

Answer 16

It aids in respiration and indirectly stabilizes the lumbar region.

Question 17

True or False: The diaphragm is innervated by the phrenic nerve.

Answer 17

True.

Question 18

What is the function of the iliopsoas group of muscles?

Answer 18

Hip flexion and stabilization of the lumbar spine.

Question 19

Which muscles are included in the iliopsoas group?

Answer 19

Psoas major and iliacus.

Question 20

Multiple Choice: The lumbar spine muscles primarily assist in which of the following? A) Arm movement B) Leg movement C) Trunk movement

Answer 20

C) Trunk movement.

Question 21

What is the main action of the latissimus dorsi in relation to the lumbar spine?

Answer 21

Assists in extension and adduction of the arm, indirectly affecting lumbar stability.

Question 22

Which nerve innervates the latissimus dorsi?

Answer 22

Thoracodorsal nerve (C6-C8).

Question 23

True or False: The lumbar spine muscles only function during movement.

Answer 23

False.

Question 24

What is the primary action of the gluteus maximus muscle?

Answer 24

Hip extension and external rotation.

Question 25

Which nerve innervates the gluteus maximus?

Answer 25

Inferior gluteal nerve (L5-S2).

Question 26

Fill in the blank: The __________ muscle plays a key role in pelvic stability.

Answer 26

transversus abdominis.

Question 27

What is the role of the pelvic floor muscles in lumbar spine function?

Answer 27

Support pelvic organs and contribute to core stability.

Question 28

Which nerves innervate the pelvic floor muscles?

Answer 28

Pudendal nerve and sacral spinal nerves.

Question 29

True or False: The lumbar spine muscles include the muscles of the abdomen.

Answer 29

True.

Question 30

What is the function of the spinalis muscle in the lumbar region?

Answer 30

Extension of the spine.

Question 31

Which nerve innervates the spinalis muscle?

Answer 31

Dorsal rami of spinal nerves.

Question 32

Fill in the blank: The __________ muscle helps to maintain posture and is part of the erector spinae group.

Answer 32

longissimus.