Boards Flashcards
Blood supply of tympanic membrane
Lateral aspect is from circumferential and manubrial branches of the deep auricular branch of the maxillary artery
Innervation of cornea
Ophthalmic division of trigeminal nerve
Most common site of chronic sinusitis
Maxillary most common
Ethmoid
Frontal
Sphenoid least common
Course of facial nerve
Motor part Arises from facial nerve nucleus in pons
Sensory and parasympathetic parts from nervus intermedius
Both enter PETROUS TEMPORAL BONE via INTERNAL AUDITORY MEATUS, emerges from STYLOMASTOID FORAMEN and passes through PAROTID GLAND where it divides into 5 major branches
Narrowest portion of trachea
Subglottis in infants and children
LARYNX in adults
Normal thyroid weight
10 to 30 grams
Normal cystic duct diameter
1-5 mm
Metastasis of papillary thyroid cancer
Lymph nodes
Lung (snowflake appearance)
Muscle that ABDUCTS vocal cords
Cricoarytenoid
Blood supply of sinoatrial node
Right coronary artery
Location of SA node
Submyocardial at lateral aspect of junction of SVC and R atrium
Site of injection for intercostal nerve block
Angle of the rib, 7cm lateral to midline. Intercostal space, midway between dermatomes to be blocked
Gastrointestinal Stromal Tumors (GIST) arise from what layer
Interstitial cells of cajal between muscular layers of GI tract (myenteric plexus?)
What is the pringle maneuver?
Often used in liver surgery to minimize blood loss.
Haemostat is used to clamp the hepatoduodenal ligamentinterrupting blood flow through the hepatic artery and portal vein should bleeding continue, it is likely that the IVC or hepatic vein were also traumatized
What is Sengstaken-Blakemore
Tube inserted through nose or mouth to manage UGIB due to esophageal varices
Most common anal fistula
Intersphincteric most common
Transsphincteric
Suprasphincteric
Extrasphincteric least common
Problem in foot drop
Weakness of ankle and toe dorsiflexors
(tibialis anterior, extensor hallucis longus, extensor digitorum longus)
Reffered to as steppage gait
Results in equinovarus deformity
What are the different leg compartments
Anterior
Lateral
Deep posterior
Superficial posterior
Components of anterior compartment of leg
Muscles Tibialis anterior Extensor hallucis longus Extensor digitorum longus Peroneus tertius
Neurovasculature
Deep peroneal nerve
Anterior tibial vessels
Lateral compartment of leg
Muscles
Fibularis/peroneus longus and brevis
Neurovasclature
Superficial peroneal nerve
Components of deep posterior compartment of leg
Tibialis posterior
Flexor hallucis longus
Flexor digitorum longus
Popliteus
Tibial nerve
Posterior tibial vessels
Components of superficial posterior compartment of leg
Gastrocnemius
Soleus
Plantaris
Medial sural cutaneous nerve
Blood supply of ureter
Proximal to distal RGAC Renal Gonadal Abdominal Aorta Common illiac artery
Laterally, by branches of internal illiac artery
Inferior vesical artery in men
Terine and vaginal arteries in women
Langer’s Lines
Correspond to natural orientation of collagen fibers in the dermis
Generally perpendicular to the orientation of the underlying muscle fibers
Thigh is divided into how many compartments and what are they?
Medial (obturator nerve), posterior (sciatic nerve) and anterior (femoral nerve) fascial compartments
Components of the Medial Fascial Compartment of the Thigh
Obturator nerve
Hip ADDUCTORS
Gracilis
Adductor longus, brevis and magnus
Components of Posterior Fascial Component of Thigh
Sciatic Nerve
Knee Flexors and Hip Extensors Hamstrings Biceps femoris Semitendinosus Semimembranosus
Components of Anterior Fascial Compartment of Thigh
Femoral nerve
Hip flexors
Knee extensors
Sartorius (longest muscle in the human body)
Quadriceps (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)
Longest muscle in human body
Sartorius
Completely covers the tesis
Tunica albuginea/vaginalis?
Site of paracentesis
Anterolateral abdominal wall into the peritoneal cavity through the linea alba. Needle is inserted superior to the urinary bladder and in a location that avoids the inferior epigastric artery
