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Viscera of the Neck
Lecture Anatomy Dr Rosimo
| Question | Answer |
|---|---|
| Contents of neck viscera | Thyroid and parathyroid, larynx and trachea, pharynx and esophagus |
| Other term for larynx | Hypopharynx |
| Right and left lobes of thyroid gland are connected by | Isthmus |
| Thyroid gland is found on the lamina of thyroid cartilage up to level of what | 4th-5th |
| Blood supply of the thyroid gland | Superior thyroid artery, inferior thyroid artery, and thyroidea ima artery |
| Superior thyroid artery is a branch is | External carotid artery |
| Inferior thyroid artery is a branch of | Thyrocervical trunk |
| Thyroidea ima artery is a branch of | Brachiocephalic artery |
| Venous drainage of thyroid gland | Superior and middle thyroid vein, inferior thyroid vein |
| Superior thyroid vein is a branch of | Internal jugular vein |
| Middle jugular vein is a branch of | Internal jugular vein |
| Inferior thyroid vein is a branch of | Left brachiocephalic vein |
| Lymphatic drainage of the thyroid gland | Deep cervical lymph nodes and paratracheal nodes |
| Caramel colored ovoid bodies measuring about 6mm | Parathyroid glands |
| Parathyroid glands are composed of | 2 superior and 2 inferior |
| What parathyroid glands are most constant in location | 2 superior |
| What parathyroid glands are variable in location | 2 inferior |
| Blood supply of parathyroid gland | Superior and inferior thyroid artery |
| Pharynx is composed mainly of a ring of lymphoid tissues called | Waldeyer's tonsillar ring |
| It originated at the endodermal outgrowth from the midline at floor of pharynx | Thyroid gland |
| It extends above the hyoid bone up the lower border of the cricoid cartilage | Larynx |
| Larynx narrows inferiorly as it continuous with | Esophagus and trachea |
| Epiglottis is what kind of cartilage | Elastic cartilage |
| Upper fibroelastic membrane of larynx | Quadrangular membrane |
| Cricothyroid ligament is continuous with the | Vocal ligament |
| Upper part of larynx | Vestibule |
| Cavities of the larynx which extends from the level of vestibular folds to level of the vocal folds | Middle part |
| Cavities of the larynx which extends from level of vocal folds to lower border of cricoid cartilage | Lower part |
| Extrinsic muscle of larynx are subdivided into | Elevators and depressors |
| Elevators extrinsic muscles are further subdivided into | Minor and major |
| Major elevators extrinsic muscles of larynx | Digastric, mylohyoid, stylohyoid, geniohyoid |
| Minor elevators extrinsic muscles of larynx | Stylopharyngeus, styloglossus, palatopharyngeus |
| Depressors extrinsic muscles are further subdivided into | Sternothyroid, omohyoid, and sternohyoid |
| Intrinsic muscle of larynx are subdivided into | Muscles that control the laryngeal inlet and vocal folds |
| Muscles controlling the laryngeal inlet | Oblique arytenoid |
| Muscles controlling the movement of the vocal folds | Cricothyroid and thyroarytenoid |
| Muscle that tenses the vocal fold | Cricothyroid |
| Muscle that relaxes the vocal fold | Thyroarytenoid |
| Lateral cricoarytenoid is responsible for | Adduction |
| Posterior cricoarytenoid is responsible for | Abduction |
| Cricothyroid muscle is innervated by | External laryngeal branch of superior laryngeal branch of vagus nerve |
| Motor nerve innervation to muscles of larynx | Recurrent laryngeal nerve |
| Sensory nerve innervation to muscles of larynx | Internal laryngeal branch of superior laryngeal branch of vagus nerve |
| Upper half blood supply of larynx | superior laryngeal br. of the superior thyroid artery |
| Lower half blood supply of larynx | inferior laryngeal br. of the inferior thyroid artery |
| Lymphatic drainage of larynx | deep cervical group of nodes |
| Mobile cartilaginous & membranous tube | Trachea |
| Trachea egins in the cricoid cartilage extends downward in the midline and ends in the thorax by dividing into 2 main bronchi at the level of what vertebra | 4th-5th thoracic vertebra |
| Blood supply in the neck of trachea | Inferior thyroid artery |
| Lymphatic drainage of trachea | pretracheal & paratracheal lymph nodes |
| Nerve supply of trachea | Vagus nerve (recurrent laryngeal nerve) |
| Muscular tube about 10 inches long | Esophagus |
| Esophagus begins at the cricoid level of ---- and ends at vertebral level --- | C6 and ends at T10 |
| Blood supply of esophagus | Inferior thyroid arteries and veins |
| Lymphatic drainage of esophagus | deep cervical lymph nodes |
| Nerve supply of esophagus | Recurrent laryngeal nerve and sympathetic trunk |
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