30 Questions
Which group of muscles in the back specifically act on the vertebral column and help maintain posture?
Intrinsic back muscles
Which of the following muscles is NOT considered a superficial extrinsic back muscle?
Rhomboids
Which nerve supplies the trapezius muscle?
Spinal accessory nerve
Which muscles are commonly designated as superficial respiratory muscles?
Serratus posterior superior and inferior
Which layer of the intrinsic back muscles lies deep to the rhomboid muscles?
Deep layer
Which layer of the intrinsic back muscles lies deep to the latissimus dorsi?
Deep layer
Which nerves innervate the serratus muscles running within the ribcage?
Intercostal nerves
Which nerves innervate the intrinsic back muscles?
Posterior rami of spinal nerves
Which layer of the intrinsic back muscles are grouped according to their relationship to the surface?
Superficial layer
Which muscles in the back produce and control limb movements?
Superficial extrinsic back muscles
Which muscle lies deep to the trapezius, sternocleidomastoid, splenius, and semispinalis muscles?
Rectus capitis posterior major
Which muscle is innervated by the posterior ramus of C1?
Rectus capitis posterior major
Which muscle is responsible for extension of the atlanto-occipital joint?
Rectus capitis posterior major
Which muscle is responsible for rotation of the atlanto-axial joint?
Rectus capitis posterior major
Which muscle is innervated by the ventral rami of the cervical spinal nerves?
Longus capitis
Which muscle is responsible for lateral flexion of the head and neck during unilateral contraction?
Sternocleidomastoid
Which muscle is responsible for contralateral rotation of the head and neck during unilateral contraction?
Sternocleidomastoid
Which muscle is responsible for extension of the head and upper neck during bilateral contraction?
Sternocleidomastoid
Which muscle is responsible for flexion of the lower neck during bilateral contraction?
Sternocleidomastoid
Which muscle is responsible for elevation of the sternum and clavicle during forced inhalation?
Sternocleidomastoid
Which layer of deep back muscles consists of the splenius capitis and splenius cervicis muscles?
Superficial layer
Which layer of deep back muscles consists of the erector spinae muscles?
Intermediate layer
Which layer of deep back muscles consists of the semispinalis, multifidus, and rotatores muscles?
Deep layer
Which layer of deep back muscles is the most superficial?
Superficial layer
Which layer of deep back muscles is the deepest?
Deep layer
Which muscles are the chief extensors of the vertebral column?
Erector spinae
Which muscles aid in extension, lateral flexion, and rotation of the neck?
Splenius capitis and splenius cervicis
Which muscles are responsible for stabilization of the vertebral column?
Semispinalis, multifidus, and rotatores
Which muscles are best developed in the thoracic region and assist in small rotatory movements in the thoracic spine?
Semispinalis, multifidus, and rotatores
Which muscles connect spinous processes and transverse processes in the back?
Interspinales and intertransversarii
Test your knowledge on the muscles of the back and anterior neck in this anatomy quiz. Explore the different groups of muscles and learn about their functions in producing movements and maintaining the vertebral column.
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