Back and anterior neck muscles (vessels, nerves and muscles of anterior abdominal walls and breast)
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Questions and Answers

Which group of muscles in the back specifically act on the vertebral column and maintain posture?

  • Intrinsic back muscles (correct)
  • Superficial back muscles
  • Extrinsic back muscles
  • Intermediate back muscles
  • Which nerve supplies the motor fibers of the trapezius muscle?

  • Spinal accessory nerve
  • Cranial nerve XI (correct)
  • Cervical nerves
  • Cranial nerve I
  • Which muscles in the back connect the axial skeleton with the superior appendicular skeleton and produce limb movements?

  • Intermediate back muscles
  • Superficial back muscles
  • Extrinsic back muscles (correct)
  • Intrinsic back muscles
  • Which muscles in the back are commonly designated as superficial respiratory muscles?

    <p>Intermediate extrinsic back muscles</p> Signup and view all the answers

    Which muscles in the back are more likely proprioceptive rather than motor in function?

    <p>Intermediate extrinsic back muscles</p> Signup and view all the answers

    Which muscles in the back lie deep to the rhomboid muscles?

    <p>Serratus posterior superior</p> Signup and view all the answers

    Which muscles in the back lie deep to the latissimus dorsi?

    <p>Serratus posterior inferior</p> Signup and view all the answers

    Which muscles in the back receive their nerve supply from the anterior rami of cervical nerves and act on the upper limb?

    <p>Trapezius</p> Signup and view all the answers

    Which muscles connect the spinous processes of the vertebrae?

    <p>Interspinales</p> Signup and view all the answers

    Which muscles stabilize and laterally flex the vertebral column?

    <p>Intertransversarii</p> Signup and view all the answers

    Which muscles assist with respiration and elevate the ribs?

    <p>Levatores costarum</p> Signup and view all the answers

    Which muscles are deep to the posterior cervical region and superior to the trapezius muscle?

    <p>Suboccipital muscles</p> Signup and view all the answers

    What is the primary action of the suboccipital muscles?

    <p>Extension of atlanto-occipital joint</p> Signup and view all the answers

    Which muscles are innervated by the posterior ramus of C1?

    <p>Suboccipital muscles</p> Signup and view all the answers

    Which muscles are part of the superficial group of the anterior neck muscles?

    <p>Platysma</p> Signup and view all the answers

    Which muscle is responsible for flexion of the lower neck?

    <p>Sternocleidomastoid</p> Signup and view all the answers

    Which muscle is innervated by the spinal accessory nerve?

    <p>Sternocleidomastoid</p> Signup and view all the answers

    Which muscles are part of the deep group of the anterior neck muscles?

    <p>All of the above</p> Signup and view all the answers

    Which layer of the deep back muscles consists of the Erector Spinae group?

    <p>Intermediate layer</p> Signup and view all the answers

    Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?

    <p>Semispinalis</p> Signup and view all the answers

    Which muscle group mainly originates from the transverse processes of the vertebrae?

    <p>Transversospinalis</p> Signup and view all the answers

    Which muscle is the superficial member of the transversospinalis group?

    <p>Semispinalis</p> Signup and view all the answers

    Which layer of the deep back muscles is responsible for stabilization of the vertebral column?

    <p>Deep layer</p> Signup and view all the answers

    Which muscle is best developed in the thoracic region?

    <p>Rotatores</p> Signup and view all the answers

    Which layer of the deep back muscles forms a thin covering over the intrinsic back muscles in the thoracic region?

    <p>Superficial layer</p> Signup and view all the answers

    Which muscle group lies in a 'groove' on each side of the vertebral column between the spinous processes and the angles of the ribs?

    <p>Erector Spinae</p> Signup and view all the answers

    Which muscle group is responsible for contralateral rotation?

    <p>Semispinalis</p> Signup and view all the answers

    Which muscle group is enclosed by the thoracolumbar fascia?

    <p>Erector Spinae</p> Signup and view all the answers

    Which muscle group in the back specifically acts on the vertebral column and maintains posture?

    <p>Intrinsic (deep) back muscles</p> Signup and view all the answers

    Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?

    <p>Trapezius</p> Signup and view all the answers

    Which nerve supplies the trapezius muscle?

    <p>Spinal accessory nerve (CN XI)</p> Signup and view all the answers

    Which muscle group lies in a 'groove' on each side of the vertebral column between the spinous processes and the angles of the ribs?

    <p>Deep Layer: Transversospinalis Group</p> Signup and view all the answers

    Which muscle is best developed in the thoracic region?

    <p>Multifidus</p> Signup and view all the answers

    Which layer of the deep back muscles is responsible for stabilization of the vertebral column?

    <p>Deep Layer</p> Signup and view all the answers

    Which muscles connect the spinous processes of the vertebrae?

    <p>Interspinales</p> Signup and view all the answers

    Which muscles assist with respiration and elevate the ribs?

    <p>Levatores costarum</p> Signup and view all the answers

    Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?

    <p>Rectus capitis anterior</p> Signup and view all the answers

    Which muscle is best developed in the thoracic region?

    <p>Levatores costarum</p> Signup and view all the answers

    Which muscle moves the rib superiorly during inspiration?

    <p>External intercostal muscle</p> Signup and view all the answers

    Which muscle moves the rib inferiorly during expiration?

    <p>Internal intercostal muscle</p> Signup and view all the answers

    Which muscle is responsible for increasing the volume of the thoracic cavity during inspiration?

    <p>Diaphragm</p> Signup and view all the answers

    Which muscle group anchors the upper limb to the trunk?

    <p>Pectoral muscles</p> Signup and view all the answers

    Which muscle group is enclosed by the thoracolumbar fascia?

    <p>Abdominal muscles</p> Signup and view all the answers

    Which muscle group is responsible for contralateral rotation?

    <p>Abdominal muscles</p> Signup and view all the answers

    Which muscle is responsible for flexion of the lower neck?

    <p>Sternocleidomastoid muscle</p> Signup and view all the answers

    Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?

    <p>Erector spinae muscle</p> Signup and view all the answers

    Which muscle group mainly originates from the transverse processes of the vertebrae?

    <p>Transversospinalis muscles</p> Signup and view all the answers

    Which muscle group in the back specifically acts on the vertebral column and maintains posture?

    <p>Intrinsic back muscles</p> Signup and view all the answers

    Which one of the following is the main arterial supply of the breast?

    <p>Internal thoracic artery</p> Signup and view all the answers

    Which one of the following is the main venous drainage of the breast?

    <p>Axillary veins</p> Signup and view all the answers

    Which intercostal nerves innervate the breast?

    <p>2nd to 6th intercostal nerves</p> Signup and view all the answers

    Which one of the following is the main lymphatic drainage of the breast?

    <p>Axillary lymph nodes</p> Signup and view all the answers

    Which one of the following is the main arterial supply of the thoracic wall?

    <p>Posterior intercostal arteries</p> Signup and view all the answers

    Which one of the following is the main venous drainage of the thoracic wall?

    <p>Posterior intercostal veins</p> Signup and view all the answers

    Which anterior rami of the spinal nerves supply the thoracic wall?

    <p>2nd to 12th intercostal nerves</p> Signup and view all the answers

    Which one of the following arteries is a direct continuation of the internal thoracic artery and supplies the anterolateral abdominal wall?

    <p>Superior epigastric artery</p> Signup and view all the answers

    Which one of the following veins is a branch of the external iliac artery and drains the anterolateral abdominal wall?

    <p>Inferior epigastric vein</p> Signup and view all the answers

    Which one of the following is responsible for the venous drainage of the abdominal wall parallel to the arteries?

    <p>Veins that run parallel to the arteries</p> Signup and view all the answers

    Which one of the following is the main arterial supply of the breast?

    <p>Internal thoracic artery</p> Signup and view all the answers

    Which one of the following is the main venous drainage of the thoracic wall?

    <p>Intercostal veins</p> Signup and view all the answers

    Which one of the following nerves innervates the nipple?

    <p>4th intercostal nerve</p> Signup and view all the answers

    Which one of the following is responsible for the lymphatic drainage of the breast?

    <p>Axillary nodes</p> Signup and view all the answers

    Which one of the following arteries directly continues from the internal thoracic artery and supplies the anterolateral abdominal wall?

    <p>Superior epigastric artery</p> Signup and view all the answers

    Which muscle forms the floor of the thoracic cavity?

    <p>Diaphragm</p> Signup and view all the answers

    Which muscle moves the rib inferiorly during expiration?

    <p>Internal intercostal muscle</p> Signup and view all the answers

    Which muscle moves the rib superiorly during inspiration?

    <p>External intercostal muscle</p> Signup and view all the answers

    Which muscle depresses the domes of the diaphragm and increases the volume of the thoracic cavity?

    <p>Diaphragm</p> Signup and view all the answers

    Which muscle group is responsible for anchoring the upper limb to the trunk?

    <p>Pectoral region</p> Signup and view all the answers

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