Podcast
Questions and Answers
Which muscles of the back are innervated by the intercostal nerves running within the ribcage?
Which muscles of the back are innervated by the intercostal nerves running within the ribcage?
Which layer of the intrinsic back muscles is responsible for maintaining posture and controlling movements of the vertebral column?
Which layer of the intrinsic back muscles is responsible for maintaining posture and controlling movements of the vertebral column?
Which muscle group is part of the intermediate layer of the intrinsic back muscles?
Which muscle group is part of the intermediate layer of the intrinsic back muscles?
Which muscle is part of the superficial layer of the deep back muscles?
Which muscle is part of the superficial layer of the deep back muscles?
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Which muscle forms the medial column of the erector spinae muscles?
Which muscle forms the medial column of the erector spinae muscles?
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Which muscle is the superficial member of the transversospinalis muscle group?
Which muscle is the superficial member of the transversospinalis muscle group?
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Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
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Which muscle is the middle layer of the transversospinalis muscle group?
Which muscle is the middle layer of the transversospinalis muscle group?
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Which muscle group mainly originates from the transverse processes of vertebrae and passes to the spinous processes of more superior vertebrae?
Which muscle group mainly originates from the transverse processes of vertebrae and passes to the spinous processes of more superior vertebrae?
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Which muscle is the deepest of the three layers of the transversospinalis muscles?
Which muscle is the deepest of the three layers of the transversospinalis muscles?
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Which group of muscles in the back specifically act on the vertebral column and maintain posture?
Which group of muscles in the back specifically act on the vertebral column and maintain posture?
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Which nerve supplies the trapezius muscle?
Which nerve supplies the trapezius muscle?
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Which muscles in the back connect the axial skeleton (vertebral column) with the superior appendicular skeleton (upper limb)?
Which muscles in the back connect the axial skeleton (vertebral column) with the superior appendicular skeleton (upper limb)?
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Which muscles in the back are commonly designated as superficial respiratory muscles?
Which muscles in the back are commonly designated as superficial respiratory muscles?
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Which muscles in the back are thin, weak, and more likely proprioceptive rather than motor in function?
Which muscles in the back are thin, weak, and more likely proprioceptive rather than motor in function?
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Which muscles in the back are covered later as the muscles acting on the pectoral girdle?
Which muscles in the back are covered later as the muscles acting on the pectoral girdle?
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Which muscles in the back receive their nerve supply from the anterior rami of cervical nerves and act on the upper limb?
Which muscles in the back receive their nerve supply from the anterior rami of cervical nerves and act on the upper limb?
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Which muscles in the back lie deep to the rhomboid muscles?
Which muscles in the back lie deep to the rhomboid muscles?
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Which muscles in the back lie deep to the latissimus dorsi?
Which muscles in the back lie deep to the latissimus dorsi?
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Which muscles in the back produce and control limb movements?
Which muscles in the back produce and control limb movements?
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Which muscles are responsible for stabilization and lateral flexion of the vertebral column?
Which muscles are responsible for stabilization and lateral flexion of the vertebral column?
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Which muscles are located deep to the superior part of the posterior cervical region and consist of two rectus capitis posterior and two obliquus muscles?
Which muscles are located deep to the superior part of the posterior cervical region and consist of two rectus capitis posterior and two obliquus muscles?
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Which muscles are responsible for extension of the atlanto-occipital joint and rotation of the atlanto-axial joint?
Which muscles are responsible for extension of the atlanto-occipital joint and rotation of the atlanto-axial joint?
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Which muscle is responsible for depressing and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
Which muscle is responsible for depressing and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
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Which muscle is responsible for lateral flexion of the head and neck during unilateral contraction, and extension of the head and upper neck during bilateral contraction?
Which muscle is responsible for lateral flexion of the head and neck during unilateral contraction, and extension of the head and upper neck during bilateral contraction?
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Which muscle is innervated by the posterior ramus of C1 and is responsible for extension and rotation of the vertebral column?
Which muscle is innervated by the posterior ramus of C1 and is responsible for extension and rotation of the vertebral column?
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Which muscle is responsible for lateral flexion of the head and neck during, and elevation of the sternum and clavicle during forced inhalation ?
Which muscle is responsible for lateral flexion of the head and neck during, and elevation of the sternum and clavicle during forced inhalation ?
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Which muscles are part of the deep group of the anterior neck muscles and are innervated by the ventral rami of the cervical spinal nerves?
Which muscles are part of the deep group of the anterior neck muscles and are innervated by the ventral rami of the cervical spinal nerves?
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Which muscles in the back are innervated by the ______ running within the ribcage?
Which muscles in the back are innervated by the ______ running within the ribcage?
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Which muscle is responsible for ______ of the head, cervical spine, and thoracic spine?
Which muscle is responsible for ______ of the head, cervical spine, and thoracic spine?
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Which muscle is responsible for ______ and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
Which muscle is responsible for ______ and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
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Which muscle group mainly originates from the transverse processes of vertebrae and passes to the spinous processes of more superior vertebrae?
Which muscle group mainly originates from the transverse processes of vertebrae and passes to the spinous processes of more superior vertebrae?
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Which muscles are responsible for ______ and lateral flexion of the vertebral column?
Which muscles are responsible for ______ and lateral flexion of the vertebral column?
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Which muscle is the ______ member of the transversospinalis muscle group?
Which muscle is the ______ member of the transversospinalis muscle group?
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Which muscle is the ______ layer of the transversospinalis muscle group?
Which muscle is the ______ layer of the transversospinalis muscle group?
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Which muscle is the ______ of the three layers of the transversospinalis muscles?
Which muscle is the ______ of the three layers of the transversospinalis muscles?
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Which muscle is part of the ______ layer of the deep back muscles?
Which muscle is part of the ______ layer of the deep back muscles?
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Which muscles in the back are ______ later as the muscles acting on the pectoral girdle?
Which muscles in the back are ______ later as the muscles acting on the pectoral girdle?
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Which group of muscles in the back produce and control limb movements?
Which group of muscles in the back produce and control limb movements?
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Which muscle receives its motor fibers from the spinal accessory nerve (CN XI)?
Which muscle receives its motor fibers from the spinal accessory nerve (CN XI)?
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Which muscles in the back are part of the deep group of the anterior neck muscles and are innervated by the ventral rami of the cervical spinal nerves?
Which muscles in the back are part of the deep group of the anterior neck muscles and are innervated by the ventral rami of the cervical spinal nerves?
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Which muscle is responsible for extension and rotation of the vertebral column and is innervated by the posterior ramus of C1?
Which muscle is responsible for extension and rotation of the vertebral column and is innervated by the posterior ramus of C1?
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Which muscles in the back are responsible for stabilization and lateral flexion of the vertebral column?
Which muscles in the back are responsible for stabilization and lateral flexion of the vertebral column?
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Which muscle is the deepest of the three layers of the transversospinalis muscles?
Which muscle is the deepest of the three layers of the transversospinalis muscles?
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Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
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Which muscle forms the medial column of the erector spinae muscles?
Which muscle forms the medial column of the erector spinae muscles?
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Which muscle is responsible for lateral flexion of the head and neck during unilateral contraction, and extension of the head and upper neck during bilateral contraction?
Which muscle is responsible for lateral flexion of the head and neck during unilateral contraction, and extension of the head and upper neck during bilateral contraction?
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Which muscle is responsible for depressing and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
Which muscle is responsible for depressing and drawing the lower lip inferiorly, as well as depressing the mandible at the temporomandibular joint?
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Which muscles in the back are relatively sparse in the thoracic region and are also called the segmental muscles of the back?
Which muscles in the back are relatively sparse in the thoracic region and are also called the segmental muscles of the back?
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The interspinales and intertransversarii muscles connect the ______ and ______ processes, respectively.
The interspinales and intertransversarii muscles connect the ______ and ______ processes, respectively.
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The interspinales muscles are responsible for ______ and ______ of the vertebral column.
The interspinales muscles are responsible for ______ and ______ of the vertebral column.
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The intertransversarii muscles are responsible for ______ and ______ of the vertebral column.
The intertransversarii muscles are responsible for ______ and ______ of the vertebral column.
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The levatores costarum muscles assist with respiration in the elevation of ______ and ______ of the column.
The levatores costarum muscles assist with respiration in the elevation of ______ and ______ of the column.
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The four small muscles of the suboccipital region lie deep to the semispinalis capitis muscles and consist of two rectus capitis posterior (major and minor) and two ______ muscles.
The four small muscles of the suboccipital region lie deep to the semispinalis capitis muscles and consist of two rectus capitis posterior (major and minor) and two ______ muscles.
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All four muscles of the suboccipital region are innervated by the ______ ramus of C1, the suboccipital nerve.
All four muscles of the suboccipital region are innervated by the ______ ramus of C1, the suboccipital nerve.
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The anterior neck muscles can be divided into two major groups: superficial and ______.
The anterior neck muscles can be divided into two major groups: superficial and ______.
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The superficial group of anterior neck muscles contains the ______ and sternocleidomastoid muscles.
The superficial group of anterior neck muscles contains the ______ and sternocleidomastoid muscles.
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All muscles in the deep group of anterior neck muscles are innervated by the ______ rami of the cervical spinal nerves.
All muscles in the deep group of anterior neck muscles are innervated by the ______ rami of the cervical spinal nerves.
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Which muscle is responsible for increasing the volume of the thoracic cavity during inspiration?
Which muscle is responsible for increasing the volume of the thoracic cavity during inspiration?
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Which muscles are part of the superficial layer of the thoracic wall?
Which muscles are part of the superficial layer of the thoracic wall?
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Which muscles move the rib superiorly during inspiration?
Which muscles move the rib superiorly during inspiration?
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Which muscles move the rib inferiorly during expiration?
Which muscles move the rib inferiorly during expiration?
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Which muscle depresses the domes and increases the volume of the thoracic cavity?
Which muscle depresses the domes and increases the volume of the thoracic cavity?
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Which muscle is responsible for anchoring the upper limb to the trunk?
Which muscle is responsible for anchoring the upper limb to the trunk?
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Which muscle is responsible for extension and rotation of the vertebral column and is innervated by the posterior ramus of C1?
Which muscle is responsible for extension and rotation of the vertebral column and is innervated by the posterior ramus of C1?
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Which muscle receives its motor fibers from the spinal accessory nerve (CN XI)?
Which muscle receives its motor fibers from the spinal accessory nerve (CN XI)?
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Which muscle is responsible for depressing the mandible at the temporomandibular joint?
Which muscle is responsible for depressing the mandible at the temporomandibular joint?
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Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
Which muscle is responsible for extension of the head, cervical spine, and thoracic spine?
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Which of the following is the main arterial supply of the breast?
Which of the following is the main arterial supply of the breast?
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Which of the following is NOT a venous drainage of the breast?
Which of the following is NOT a venous drainage of the breast?
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Which intercostal nerves innervate the nipple?
Which intercostal nerves innervate the nipple?
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Which of the following is the main arterial supply of the thoracic wall?
Which of the following is the main arterial supply of the thoracic wall?
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Which of the following is NOT a venous drainage of the thoracic wall?
Which of the following is NOT a venous drainage of the thoracic wall?
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Which nerves mainly supply the thoracic wall?
Which nerves mainly supply the thoracic wall?
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Which of the following arteries is a direct continuation of the internal thoracic artery?
Which of the following arteries is a direct continuation of the internal thoracic artery?
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Which artery is a branch of the external iliac artery and supplies the anterolateral abdominal wall?
Which artery is a branch of the external iliac artery and supplies the anterolateral abdominal wall?
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Which veins drain the abdominal wall and run parallel to the arteries mentioned?
Which veins drain the abdominal wall and run parallel to the arteries mentioned?
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Which of the following is NOT a vessel of the anterolateral abdominal wall?
Which of the following is NOT a vessel of the anterolateral abdominal wall?
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Study Notes
Back Muscles
- The intercostal nerves running within the ribcage innervate the intercostal muscles and the levatores costarum muscles.
- The intermediate layer of the intrinsic back muscles is responsible for maintaining posture and controlling movements of the vertebral column.
- The semispinalis, multifidus, and rotatores muscles form the intermediate layer of the intrinsic back muscles.
- The latissimus dorsi muscle is part of the superficial layer of the deep back muscles.
- The iliocostalis muscle forms the medial column of the erector spinae muscles.
- The splenius muscle is the superficial member of the transversospinalis muscle group.
- The semispinalis muscle is responsible for extension of the head, cervical spine, and thoracic spine.
- The multifidus muscle is the middle layer of the transversospinalis muscle group.
- The semispinalis and multifidus muscles mainly originate from the transverse processes of vertebrae and pass to the spinous processes of more superior vertebrae.
- The rotatores muscle is the deepest of the three layers of the transversospinalis muscles.
- The intrinsic back muscles specifically act on the vertebral column and maintain posture.
- The spinal accessory nerve (CN XI) supplies the trapezius muscle.
- The latissimus dorsi, rhomboid, and levator scapulae muscles connect the axial skeleton (vertebral column) with the superior appendicular skeleton (upper limb).
- The serratus anterior and pectoralis minor muscles are commonly designated as superficial respiratory muscles.
- The interspinales and intertransversarii muscles are thin, weak, and more likely proprioceptive rather than motor in function.
- The levator scapulae and rhomboid muscles are covered later as the muscles acting on the pectoral girdle.
- The muscles receiving their nerve supply from the anterior rami of cervical nerves and acting on the upper limb are the scalene and prevertebral muscles.
- The splenius muscle lies deep to the rhomboid muscles.
- The erector spinae muscles lie deep to the latissimus dorsi.
- The intrinsic back muscles produce and control limb movements.
- The semispinalis and multifidus muscles are responsible for stabilization and lateral flexion of the vertebral column.
Suboccipital Region
- The muscles located deep to the superior part of the posterior cervical region consist of two rectus capitis posterior and two obliquus muscles.
- The rectus capitis posterior and obliquus muscles are responsible for extension of the atlanto-occipital joint and rotation of the atlanto-axial joint.
- The rectus capitis posterior minor muscle is innervated by the posterior ramus of C1.
Anterior Neck Muscles
- The anterior neck muscles can be divided into two major groups: superficial and deep.
- The superficial group of anterior neck muscles contains the platysma and sternocleidomastoid muscles.
- All muscles in the deep group of anterior neck muscles are innervated by the ventral rami of the cervical spinal nerves.
Thoracic Wall
- The intercostal muscles are part of the superficial layer of the thoracic wall.
- The intercostal muscles move the rib superiorly during inspiration.
- The intercostal muscles move the rib inferiorly during expiration.
- The diaphragm depresses the domes and increases the volume of the thoracic cavity.
- The trapezius muscle is responsible for anchoring the upper limb to the trunk.
Arterial Supply
- The main arterial supply of the breast is the internal thoracic artery.
- The main arterial supply of the thoracic wall is the internal thoracic artery.
- The superior epigastric artery is a direct continuation of the internal thoracic artery.
- The inferior epigastric artery is a branch of the external iliac artery and supplies the anterolateral abdominal wall.
- The superior and inferior epigastric veins drain the abdominal wall and run parallel to the arteries mentioned.
Studying That Suits You
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Description
Test your knowledge of back and anterior neck muscles with this quiz based on the BMS Anatomy Lecture 3. From the major back muscles to the intricate details of the neck, challenge yourself and review key concepts from Moore's Clinically Oriented Anatomy. Get ready to ace your anatomy exam!
