me Shared "CNS-L" - 68 Picmonics
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CNS-L
Circle of Willis
- Characteristics
- Anterior Cerebral Artery (ACA) Supplies Motor/Sensory Parts of the Cortex for Lower Extremities
- Anterior Communicating Artery (Acomm) Connects ACA to ACA
- Internal Carotid Arteries (ICA)
- Middle Cerebral Arteries (MCA) Supply Cortex for Upper Limbs and Face
- Posterior Communicating Artery (Pcomm) Connects ICA to PCA
- Posterior Cerebral Arteries (PCA) Supply Occipital Cortex
- Basilar Artery Supplies Medulla, Pons, and PCA
3 mins
Vitamin B1 (Thiamine)
- Mechanism
- Branched-chain Ketoacid Dehydrogenase
- Pyruvate Dehydrogenase
- Alpha-ketoglutarate Dehydrogenase
- Transketolase
- DEFICIENCY EFFECTS
- Wernicke-Korsakoff Syndrome
- Beriberi
- ATP Depletion
- Aerobic Tissues Like Brain and Heart Affected First
- Considerations
- Deficiency Can Worsen with Glucose Infusion
2 mins
Closed-Angle Glaucoma
- Primary
- Lens causes pupillary obstruction
- Aqueous humor builds behind iris
- Iris bends forward, obstructing trabecular mesh
- Secondary
- Hypoxia Causes Neovascular Proliferation
- Contraction and obstruction of trabecular mesh
- Chronic disease (Crone)
- Asymptomatic
- Acute Disease
- Eye pain and blindness
- Rock-hard eye
- Headache
- Emergency
- Epinephrine contraindicated
2 mins
Epidural Hematoma
- Mechanism
- Middle Meningeal Artery Rupture
- Temporal Bone Fracture
- Hematoma Between Skull And Dura Mater
- Transtentorial Herniation
- Lucid Interval
- Imaging
- Lens-shaped on CT
- Does Not Cross Suture Lines
- Treatment
- Craniotomy
1 min
Tuberous Sclerosis
- Characteristics
- Autosomal Dominant
- Signs and Symptoms
- Hamartomas in CNS and Skin
- Phakoma
- Subependymal Giant Cell Astrocytoma
- Seizures
- Intellectual Disability (Mental Retardation)
- Adenoma Sebaceum
- Shagreen Patch
- Ash-leaf Spots
- Renal Angiomyolipoma
- Cardiac Rhabdomyoma
2 mins
Biotin (Vitamin B7)
- Mechanism
- Carboxylation Reaction
- Pyruvate Carboxylation to Oxaloacetate
- Propionyl-CoA Carboxylation to Methylmalonyl-CoA
- Acetyl-CoA Carboxylation to Malonyl CoA
- Deficiency Causes
- Antibiotic Use
- Ingestion of Raw Eggs
- Signs & Symptoms
- Alopecia
- Dermatitis
- Enteritis
2 mins
Vitamin B3 (Niacin)
- Derived from Tryptophan
- Synthesis Requires Vitamin B6
- Constituent of NAD+
- Deficiency Causes
- Hartnup Disease
- Carcinoid Syndrome
- Deficiency Symptoms
- Pellagra
- Diarrhea
- Dermatitis
- Dementia
- Glossitis
- Excess Symptoms
- Flushing
2 mins
Vitamin B6 (Pyridoxine)
- Pyridoxal Phosphate
- Mechanism
- Transamination
- Decarboxylation
- Glycogen Phosphorylase
- Cystathionine Synthase
- Functions
- Heme Synthesis
- Niacin Synthesis
- Neurotransmitter Synthesis
2 mins
Zinc Deficiency
- Mechanism
- Used in Over 100 Enzymes
- Zinc Finger Formation
- Signs and Symptoms
- Delayed Wound Healing
- Hypogonadism
- Decreased Adult Hair
- Dysgeusia
- Anosmia
- Perioral Rash
- Acrodermatitis Enteropathica
- Increased Risk in Patients with Cirrhosis
2 mins
Vitamin E Deficiency
- Mechanism
- Antioxidant
- Protects Erythrocytes
- Protects from Free Radical Damage
- Deficiency Signs and Symptoms
- Hemolytic Anemia
- Posterior Column
- Spinocerebellar Tract
2 mins
Vitamin B12 (Cobalamin) Deficiency Causes
- Causes
- Vegans
- Pernicious Anemia
- Gastric Bypass Surgery
- Malabsorption
- Sprue
- Enteritis
- Crohn's Disease
- Diphyllobothrium latum
4 mins
Vitamin C Mechanism and Deficiency
- Mechanism
- Ascorbic acid
- Antioxidant
- Protects Against Free Radicals
- Keeps Iron in Reduced State
- Hydroxylation of Proline and Lysine
- Necessary for Dopamine B Hydroxylase
- Deficiency Signs and Symptoms
- Scurvy
- Swollen Gums
- Bruising
- Poor Wound Healing
- Hemarthrosis
- Perifollicular Hemorrhages
- Anemia
4 mins
Vitamin B5 (Pantothenate)
- Mechanism
- Pantothenate
- Pyruvate Dehydrogenase
- Coenzyme A
- Fatty Acid Synthase
- Deficiency Signs and Symptoms
- Enteritis
- Dermatitis
- Alopecia
- Adrenal Insufficiency
2 mins
Vitamin B12 (Cobalamin) Mechanism and Deficiency
- Mechanism
- Cobalamin
- Large reserve pool in the liver
- Homocysteine to methionine
- Methylmalonyl CoA to succinyl CoA
- Deficiency Signs and Symptoms
- Macrocytic Megaloblastic Anemia
- Hypersegmented Neutrophils
- Neurologic defects
- Posterior column
- Lateral corticospinal tract
- Spinocerebellar tract
5 mins
Riboflavin (Vitamin B2)
- Classification
- Vitamin B2
- Biochemistry
- FAD
- FAD Makes 1.5 ATP
- Succinate to Fumarate
- DEFICIENCY
- Glossitis
- Cheilosis
- Corneal Vascularization
2 mins
Vitamin B6 (Pyridoxine) Deficiency
- Deficiency From Isoniazid
- Deficiency From Oral Contraceptives
- Seizures
- Hyperirritability
- Peripheral Neuropathy
- Sideroblastic Anemia
3 mins
Beriberi (Thiamine Deficiency)
- Thiamine Deficiency
- Dry Beriberi
- Polyneuritis
- Muscle Wasting
- Wet Beriberi
- Dilated Cardiomyopathy
- Edema
51 secs
Folate Deficiency
- Clinical Features
- Macrocytic Anemia
- Megaloblastic Anemia
- Etiologies
- Malabsorption
- Dietary
- Tea and Toast
- Alcoholics
- Medication-induced
- Methotrexate
- Trimethoprim
- Increased Requirement
- Hemolytic Anemia
- Pregnancy
2 mins
Wernicke-Korsakoff Syndrome
- Thiamine deficiency
- Confusion
- Ophthalmoplegia
- Ataxia
- Korsakoff
- Confabulation
- Personality Changes
- Memory loss
- Alcoholics
- Damage to medial dorsal nucleus
- Damage to mammillary bodies
2 mins
Von Hippel-Lindau Disease
- Pathophysiology
- Chromosome 3
- Presentation
- Hemangioblastomas
- Medulla, Retina, Cerebellum
- Cysts
- Kidney, Liver, Pancreas
- Develop Bilateral Renal Carcinomas
- Pheochromocytomas
2 mins
