49. Which muscle abducts the vocal cords?
a. Transverse arytenoids
b. Cricothyroid
c. Lateral cricoarytenoid
d. Posterior cricoarytenoid
e. Thyoarytenoid
50. The cricoid cartilage
a. Articulates with the thyroid cartilage via fibrocartilage joints
b. Is an incomplete cartilaginous ring
c. Projects anteriorly as a quadrangular flat part
d. Provides attachment for anterior cricoarytenoid muscle
e. Articulates superiorly with the inferior horn of the thyroid cartilage
51. The carotid triangle contains
a. Subclavia artery
b. Omohyoid muscle
c. Occipital artery
d. Internal laryngeal nerve
e. Anterior jugular vein
52. The cervical sympathetic trunk
a. Descends from the upper posterior triangle to the first rib
b. Runs lateral to the vertebral artery
c. Lies behind the carotid sheath
d. Lies behind the prevertebral fascia
e. Ends at the inferior cervical ganglion
53. The carotid sheath
a. Extends from the base of the skull to the bifurcation of common carotid
b. Contains the stylohyoid ligament
c. Contains only three cranial nerves
d. Is attached to the aorta
e. Contains the sympathetic trunk
54. Regarding the vertebrae
a. Spinal nerves emerge through foramina between the vertebral laminae
b. The anterior longitudinal ligament extends from the anterior tubercle of the atlas to the upper part of the
lumbar spine
c. Articular processes are joined to adjacent vertebrae by synovial joints
d. The ligamentum flavum joins borders of adjacent spinous processes
e. A typical thoracic vertebra has foramina in the transverse processes
55. When performing a lumbar puncture the spinal needle should not pass through the
a. Ligamentum flavum
b. Posterior longitudinal ligament
c. Supraspinous ligament
d. Inerspinous ligament
e. Skin