Muscles Involved in Back Extension Quiz

Test your knowledge of spinal anatomy! Identify muscles involved in back extension, their functions, and innervation. Challenge yourself now!

#1

Which muscle is primarily responsible for back extension?

Trapezius
Rectus abdominis
Erector spinae
Latissimus dorsi
#2

Which of the following is NOT a muscle involved in back extension?

Iliocostalis
Splenius
Psoas major
Longissimus
#3

Which of the following muscles is NOT involved in back extension?

Splenius capitis
Semispinalis
Pectoralis major
Multifidus
#4

Which muscle acts to stabilize the lumbar spine during back extension?

Deltoid
Supraspinatus
Rotatores
Multifidus
#5

Which muscle assists in back extension while also helping to rotate the trunk?

Gluteus maximus
Sartorius
Psoas major
Internal oblique
#6

Which muscle assists in back extension and lateral flexion of the spine?

Quadratus lumborum
Rhomboids
Obliquus externus abdominis
Serratus anterior
#7

The muscles involved in back extension are primarily innervated by which nerve?

Femoral nerve
Tibial nerve
Vagus nerve
Posterior rami of spinal nerves
#8

During back extension, which muscle group acts as a synergist to the erector spinae?

Hamstrings
Quadriceps
Gastrocnemius
Biceps femoris
#9

Which of the following is a deep muscle involved in back extension?

External oblique
Piriformis
Transversospinalis
Serratus posterior superior
#10

The transversospinalis group includes which of the following muscles involved in back extension?

Spinalis
Serratus anterior
Scalenes
Longissimus
#11

Which muscle group provides stability during back extension exercises?

Obliques
Rectus abdominis
Paraspinal muscles
Gluteus maximus
#12

Which muscle group assists in controlling the descent during back extension movements?

Rectus abdominis
Quadratus lumborum
Serratus posterior inferior
Iliocostalis lumborum
#13

Which muscle plays a significant role in maintaining upright posture by opposing excessive lumbar lordosis during back extension?

Tensor fasciae latae
Gluteus medius
Psoas minor
Rectus abdominis
#14

During back extension, which muscle helps control the rate of trunk flexion and rotation?

Quadratus lumborum
Rhomboids
Levator scapulae
Iliopsoas
#15

Which muscle, when overactive, can limit the range of motion during back extension exercises?

Erector spinae
Pectoralis major
Gluteus maximus
Semimembranosus

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