Cardiac Anatomy Flashcards
Steps of plaque formation (4)
- Endothelial inflammatory response w/ accumulation of WBCs and macrophages
- Cholesterol and trig accumulation = fatty deposit (atheroma)
- Calcium accumulation
- Resulting mass reduces elasticuty/narrows lumen aka hardening of the artery
What are the three layers of the paricardium?
From inner to outer:
Visceral pericardium
Parietal pericardium
Fibrous pericardium
What layers of the pericardium are attached to each other?
Fibrous + parietal pericardium
Between what two layers of the pericardium does the serous fluid reside?
Between the visceral and parietal
What is Beck’s triad a sign of and what are the signs?
Cardiac tamponade
- Hypotension
- Muffled heart sounds
- JVD
What is the sympathetic innervation pathway to the cardiac plexus?
Preganglionic SNS from T1-5 > cervical and upper thoracic SNS ganglia > sympathetic trunk > cardiac plexus
The right coronary artery supplies what with blood? (8)
RA/RV
SA/AV nodes
Atrial septum
portion of LA
posteroinferior 1/3 of IV septum
Part of posterior LV
The left coronary artery supplies? (3)
Most of LA
most of IV septum including AV bundle and branches
What is a simpler name for the convergence-projection mechanism?
Referred pain
afferent sensory from parietal pericardium travels with phrenic nerve so pain from this area can refer to?
supraclavicular area
Pain from visceral cardiac fibers carried by sympathetic trunk can refer to cutaneous region supplied by spinal cord level?
T1 - T4/5
Referred pain felt from MI into the left arm and chest travel up which nerve tracts?
Spinothalamic and thalamocortical tracts (thought you were done with that shit didn’t you?)
What nerve is involved in “brain freeze”
Vagus
