Intercostal Nerves Origin, Course, and Termination
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Questions and Answers

Which artery primarily supplies arterial blood to the palatine tonsils?

  • Ascending palatine artery (correct)
  • Lingual artery
  • Internal carotid artery
  • Facial artery
  • Which vein primarily drains the venous blood from the palatine tonsils?

  • Internal jugular vein (correct)
  • Pharyngeal vein
  • Facial vein
  • Superior thyroid vein
  • Which lymph node group primarily receives lymphatic drainage from the palatine tonsils?

  • Jugulodigastric lymph nodes (correct)
  • Cervical lymph nodes
  • Submandibular lymph nodes
  • Retropharyngeal lymph nodes
  • Which nerve provides the primary sensory innervation to the palatine tonsils?

    <p>Glossopharyngeal nerve (CN IX)</p> Signup and view all the answers

    What is the primary function of the palatine tonsils in the body?

    <p>Immune function</p> Signup and view all the answers

    Where do the intercostal nerves originate from?

    <p>Anterior rami of spinal nerves T1 to T11</p> Signup and view all the answers

    What is the course of intercostal nerves after exiting the intervertebral foramina?

    <p>They travel obliquely along the intercostal spaces</p> Signup and view all the answers

    In which regions of the thorax do intercostal nerves terminate?

    <p>Anterior and lateral regions</p> Signup and view all the answers

    What do the lateral cutaneous branches of intercostal nerves innervate?

    <p>Lateral thoracic wall</p> Signup and view all the answers

    What is the sensory distribution of intercostal nerves?

    <p>Thoracic wall skin, muscles, and parietal pleura</p> Signup and view all the answers

    Which artery supplies blood to the supraglottic region of the larynx?

    <p>Superior Laryngeal Artery</p> Signup and view all the answers

    Where does the venous blood from the larynx ultimately drain into?

    <p>Internal Jugular Vein</p> Signup and view all the answers

    Which artery provides blood to the subglottic region of the larynx?

    <p>Inferior Laryngeal Artery</p> Signup and view all the answers

    How is the lymphatic drainage of the larynx primarily carried out?

    <p>Following the arterial pathways</p> Signup and view all the answers

    Which group of lymphatics drain into the superior deep cervical lymph nodes?

    <p>Supraglottic Lymphatics</p> Signup and view all the answers

    Which nerve supplies motor innervation to the cricothyroid muscle of the larynx?

    <p>Superior laryngeal nerve</p> Signup and view all the answers

    What is the primary function of the vocal fold abduction movement?

    <p>Airflow regulation</p> Signup and view all the answers

    Which lymph nodes drain the inferior laryngeal lymphatics?

    <p>Deep cervical and tracheoesophageal lymph nodes</p> Signup and view all the answers

    Which branch of the superior laryngeal nerve provides sensory innervation to the supraglottic region of the larynx?

    <p>Internal branch</p> Signup and view all the answers

    Which intrinsic muscles of the larynx are innervated by the recurrent laryngeal nerve?

    <p>All muscles except the cricothyroid</p> Signup and view all the answers

    What is the origin of the Left Coronary Artery (LCA)?

    <p>It originates from the left aortic sinus of the ascending aorta.</p> Signup and view all the answers

    Which artery travels in the coronary sulcus between the right atrium and right ventricle?

    <p>Right Coronary Artery (RCA)</p> Signup and view all the answers

    Which branch of the Left Coronary Artery (LCA) supplies blood to the anterior wall of the left ventricle and the interventricular septum?

    <p>Left Anterior Descending Artery (LAD)</p> Signup and view all the answers

    Which artery originates from the right aortic sinus (also known as the right coronary sinus) of the ascending aorta?

    <p>Right Coronary Artery (RCA)</p> Signup and view all the answers

    Which artery travels in the coronary sulcus between the left atrium and left ventricle?

    <p>Left Coronary Artery (LCA)</p> Signup and view all the answers

    Which nerve branch provides sensory innervation to the temporomandibular joint (TMJ) capsule and the skin over the temple?

    <p>Auriculotemporal nerve</p> Signup and view all the answers

    Which artery is primarily responsible for supplying blood to the temporomandibular joint (TMJ) and surrounding structures?

    <p>Superficial temporal artery</p> Signup and view all the answers

    Which ligament runs from the zygomatic arch to the lateral aspect of the neck of the mandible, preventing excessive posterior displacement of the mandible?

    <p>Temporomandibular ligament</p> Signup and view all the answers

    Which nerve branch innervates the masseter muscle and provides sensory innervation to the temporomandibular joint (TMJ) capsule?

    <p>Masseteric nerve</p> Signup and view all the answers

    Which ligament extends from the styloid process of the temporal bone to the angle of the mandible, providing support to the mandible?

    <p>Stylomandibular ligament</p> Signup and view all the answers

    Which artery wraps around the left side of the heart and supplies blood to the lateral and posterior walls of the left ventricle and left atrium?

    <p>Left Circumflex Artery</p> Signup and view all the answers

    Which artery supplies blood to the right atrium, right ventricle, and a portion of the interventricular septum?

    <p>Right Coronary Artery</p> Signup and view all the answers

    Which artery descends along the posterior interventricular sulcus, supplying blood to the posterior wall of the left ventricle and the posterior septum?

    <p>Posterior Descending Artery</p> Signup and view all the answers

    Which type of joint is the temporomandibular joint classified as?

    <p>Synovial Joint</p> Signup and view all the answers

    Which nerve provides primary sensory innervation to the right atrium?

    <p>Vagus Nerve</p> Signup and view all the answers

    Which vein primarily drains venous blood from the lateral wall of the right ventricle?

    <p>Small Cardiac Vein</p> Signup and view all the answers

    Which lymph node group primarily receives lymphatic drainage from the posterior wall of the left ventricle?

    <p>Parasternal Lymph Nodes</p> Signup and view all the answers

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