Wednesday, June 16, 2021
Tuesday, June 15, 2021
Nerves of Nasal Cavity Anatomy
1. Olfactory bulb
2. Lateral internal nasal branch of anterior ethmoidal nerve (CN V1)
3. Palatine nerves (CN V2) (Greater palatine nerve; Lesser palatine nerve)
4. Nasopalatine nerve (CN V2)
5. Nerve (vidian) of pterygoid canal
6. Deep petrosal nerve
7. Greater petrosal nerve
8. Pterygopalatine ganglion
Monday, June 14, 2021
Mandibular Nerve (CN V3) Anatomy
1. Auriculotemporal nerve
2. Chorda tympani nerve
3. Lingual nerve
4. Inferior alveolar nerve (cut)
5. Nerve to mylohyoid
6. Mental nerve
7. Submandibular ganglion
8. Buccal nerve and buccinator muscle (cut)
9. Mandibular nerve (V3) (anterior division and posterior division)
Prevertebral Muscles Anatomy
1. Longus capitis muscle
2. Longus colli muscle
Origin: The longus capitis arises from the anterior tubercles of the C3-6 vertebral transverse processes. The longus colli arises from the bodies of the T1-3 vertebrae, the bodies of the C4-7 vertebrae, and transverse processes of the C3-6 vertebrae.
Tuesday, June 8, 2021
Muscles of Larynx Anatomy
1. Oblique arytenoid muscles
2. Transverse arytenoid muscles
Origin: Arise from the arytenoid cartilages.
Insertion: Attach to the opposite arytenoid cartilage.
Action: Close the inlet of the larynx by adducting the arytenoid cartilages. This narrows the rima glottidis, the space between the vocal folds.
Intrinsic Muscles of Larynx Anatomy
1. Cricothyroid muscle
Origin: Arises from the anterolateral part of the cricoid cartilage.
Insertion: Inserts into the inferior aspect and inferior horn of the thyroid cartilage.
Action: Stretches and tenses the vocal folds.
Innervation: External branch of the superior laryngeal nerve of the vagus.