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Welcome to Embryology lecture videos!
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The latest Messages 2
2023-01-20 20:37:01
Educational objective: Lesions of the occipital cortex (eg, posterior cerebral artery occlusion) can produce contralateral homonymous hemianopia with macular sparing.
61 views17:37
2023-01-20 08:35:04
79 views05:35
2023-01-20 07:00:23
https://t.me/studentdoctor
97 views04:00
2023-01-19 20:35:07
Educational objective: Acute extrapyramidal symptoms (eg, dystonia, akathisia, parkinsonism) are due to 02 blockade in the nigrostriatal pathway. First-generation, high-potency antipsychotics (eg, haloperidol, fluphenazine) strongly block 02 receptors and are most likely to cause extrapyramidal symptoms.
79 views17:35
2023-01-19 08:34:02
A 22-year-old man comes to the emergency department due to sudden-onset pain and stiffness on one side of his neck. He was diagnosed with a psychiatric disorder 2 days ago and has been adherent with his newly prescribed medication. For the past few months, the patient has heard voices telling him to quit his job, and he believes that his girlfriend's parents are monitoring his sexual thoughts with a special device. He has been socially withdrawn and has difficulty showering regularly. Vital signs are within normal limits. The head is tilted to one side and cannot be straightened without considerable pain.
201 views05:34
2023-01-18 21:46:02
25 questions repeated per block
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60 views18:46
2023-01-18 20:34:01
Educational objective: The facial nerve (CN VII) exits the stylomastoid foramen and courses through the substance of the parotid gland, where it divides into its 5 terminal branches that innervate the muscles of facial expression. Malignant tumors of the parotid gland often compress and disrupt the facial nerve and its branches, causing ipsilateral facial droop.
112 views17:34
2023-01-18 08:33:02
A 36-year-old woman comes to the office due to firm, nontender swelling of her right cheek for the past 4 months. The patient has had no fever, runny nose, sore throat, or cough. She drinks a glass of wine with dinner on most nights but does not use tobacco. Physical examination shows fullness of the preauricular space on the right side. An MRI of the region identifies a 2.2-cm mass in the right parotid gland, and a follow-up core needle biopsy shows the lesion to be neoplastic.
7 views05:33
2023-01-17 20:33:02
Educational objective: The blood-brain barrier is formed by tight junctions between nonfenestrated capillary endothelial cells that prevent the paracellular passage of fluid and solutes. This barrier only permits the passage of substances from the blood to the brain via transcellular movement across the endothelial plasma membrane, which is limited by diffusion or carrier-mediated transport.
114 views17:33
2023-01-17 08:32:02
A 68-year-old man with a history of Parkinson disease is hospitalized for pneumonia and sepsis. The patient is treated with intravenous (IV) fluids and antibiotics. He is also started on an infusion of IV dopamine for hemodynamic support. Although the manifestations of Parkinson disease are attributed to dopaminergic neuron degeneration in the substantia nigra, IV dopamine does not improve this patient's Parkinson symptoms.
55 views05:32
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