B4-101 Into to RC Anatomy Flashcards
ribs 1-7 attach to the
sternum
ribs 8-10 attach to the
costal cartilages
ribs 11 and 12 attach to
nothing; floating ribs
how many costal cartilages are there?
12
parts of the sternum [3]
manubrium
body
xiphoid process
projects back in to the IV disc between T4 and T5
sternal angle (of louis)
sternal angle
vertical line through the middle of the clavicle anteriorly
midclavicular
vertical line through the lateral side from the axilla
midaxillary
vertical line through the inferior angle of the scapula posteriorly
infra-scapular
weakest part of a rib is anterior to
the angle
posteriorly articulates with its corresponding numbered vertebrae and the one above it
head of typical rib
contains the intercostal vein and artery
costal groove
contribute to thoracic outlet syndrome
cervical rib
loss of radial pulse/hand ischemia
pectus carinatum
pigeon breast
bilateral cervical ribs in patient with thoracic outlet syndrome
pectus excavatum
funnel chest
.
top: pectus carnitum
bottom: pectus excavatum
the heart should not go past the
midclavicular line
lies at marked angulation between the long axis of the body
heart
typical position of heart within mediastinum
one -third to the right of midline
two-thirds to the left of midline
the apex of the heart is located where?
5th intercostal space
base of the heart is the
left atrium
part of the heart located most posteriorly
left atrium
where is the right ventricle located?
anterior, sternocostal
the diaphragmatic surface of the heart includes
left ventricle and part of right ventricle
the right pulmonary surface of the heart includes
right atrium
left pulmonary surface of the heart includes
left ventricle
right borders on cardiac silhouette
SVC and right atrium
left borders on cardiace silhouette
aortic arch, pulmonary artery, left auricle, and left ventricle
inferior borders on cardiac silhouette
right ventricle and small portion of left ventricle
ratio of the diameter of heart to the diameter of a thoracic cavity
CTR
if CTR> 0.5,
heart is abnormally large
what X ray view should be used to assess for cardiomegaly?
PA
central compartment of thorax located between pleural cavities
mediastinum
contains all viscera except lungs
mediastinum
divisions of the mediastinum are created by the
sternal angle (of Louis)
the inferior middle section of the mediastinum contains
pericardium, heart, roots of great vessels
fibrous membrane that covers the heart and great vessels
pericardium
the fibrous layer of the pericardium is attached to
central tendon of the diaphragm
parietal pericarium is attached to which layer?
fibrous
visceral pericardium is attached to
heart
between parietal and visceral serous pericardium
pericardial cavity
nerve supply to pericardium
phrenic nerve
irritation of the pericardium can cause
referred pain to shoulder
symptoms of pericardial effusion on EKG
sinus tachycardia
low QRS voltage
electrical aternans
a large pericardial effusion on CXR would show
enlarged cardiac silhouette with clear lung fields
pericardial effusion
collection of blood, fluid, or air in pericardial sac
cardiac tamponade
symptoms of cardiac tamponade
anxiety
chest pain that worsens with deep breaths
dyspnea
discomfort
pale, gray, or blue skin
peripheral edema
physical exam findings:
tachycardia
hypotension
elevated jugular venous pressure
pulsus paradoxus
pericardial rub
diminshed heart sounds
cardiac tamponade
air in pericardial cavity
cardiac tamponade
procedure done to relieve cardiac tamponade
pericardiocentesis
pericardiocentesis is possible due to
cardiac notch of lung
separates outflow tract from venous return
transverse pericardial sinus
posterior to base of heart
pericardial reflection along pulmonary veins and IVC
oblique pericardial sinus
oblique pericardial sinus
transverse pericardial sinus
most posterior chamber of heart and close proximity to esophagus
left atrium
d/t this, TEE and barium swallow studies can be done
deoxygenated blood returns to the [structure] via the SVC and IVC
right atrium
from the right atrium blood travels through [structure] into [structure]
tricuspid valve; right ventricle
from right ventricle, blood travels through [structure] into [structure]
pulmonary valves; pulmonary trunk
oxygenated blood returns to the [structure] via [structure]
left atrium; pulmonary veins
from the left atrium, blood travels through [structure] into [structure]
mitral valve; left ventricle
from the left ventricle blood flows through [structure] into [structure]
aortic valves; aorta
ventricular elongation and filling
diastole
blood enters the coronary veins during
diastole
“dub” closure of the aortic and pulmonary valves
diastole
ventricular shortening and emptying
systole
“lub” closure of mitral and tricuspid valves
systole
right atrium
right ventricle
left ventricle
openings of SVC and IVC are found in the
right atrium
crista terminalis is found in the
right atrium
pectinate muscles are found in the
right atrium
and auricle of left atrium (?) i think
the fossa ovalis and limbus are found in the
right atrium
the opening of the coronary sinus is found in the
right atrium
the auricles are found in the
left/right atrium
the four pulmonary veins are found in the
left atrium
the tricuspid valve is found in the
right ventricle
chordae tendinae are found in the
left/right ventricle
papillary muscles are found in the
left/right ventricle
the moderator band is found in the
right ventricle
the trabeculae carnae is found in the
left/right ventricle
the pulmonary valve and trunk are found in the
right ventricle
the mitral valve is found in the
left ventricle
aortic valves are found in the
left ventricle
muscular and membranous parts of the IV septum are found in the
left ventricle
- SVC entering RA
- R superior pulmonary veins
- LA
- descending aorta
- left inferior pulmonary vein
- RV
- RA
- IVC
- azygous vein
- descending aorta
- LV
the heart narrows and shortens starting at the [blank] and wringing toward the [2 structures]
apex; aorta & pulmonary trunk
lies in atrioventricular sulcus
circumflex branch of left coronary
lies in anterior interventricular sulcus
LAD
branch of LAD or LC coursing toward left margin of heart
left diagonal
one or more vessels along the left obtuse margin
left marginal branches
supplies the SA node, anterior portion of right ventricle, anterior 2/3 of IV septum, left ventricle, and left atrium
left coronary artery
small branch that comes off just beyond the origin of the right coronary
supplies RA and SA node
SA nodal branch of RCA
parallel to diaphragmatic border
marginal branch of RCA
lies in the posterior interventricular sulcus
posterior descending branch of RCA
given off in vicinity of the origin of the posterior IV branch
AV nodal branch of RCA
supples the SA node, RA, RV, posterior portion of left ventricle, posterior 1/3 of septum
RCA
.
- LCA
- circumflex
- posterior interventricular
- left marginal
- anterior interventricular LAD
- catheter
- SA nodal a.
- RCA
- posterior interventricular
the artery that gives rise to the posterior interventricular a. is considered
dominant
the dominant artery crosses the “crux” of the heart and gives rise to
AV nodal artery
dominance influences
damaged region following MI
travels with the anterior interventricular artery in the IV groove and then travels with the circumflex in the AV groove
vein
great cardiac vein
travels with the posterior interventricular artery
vein
middle cardiac v.
travels with the right marginal artery
vein
small cardiac vein
lies in the posterior part of the atrioventricular sulcus
coronary sinus
great, middles, and small cardiac veins are tributaries of
coronary sinus
cross over the RCA to drain directly into RA
anterior cardiac veins
a radiopaque catheter is inserted into a peripheral vein or artery and directed to heart
cardiac catheterization
pacemaker of heart
SA node
intiates and regulates impulse for contraction
SA node
located near junction of SVC and crista terminalis
SA node
distributes signal to ventricle via AV bundle
AV node
located near opening of coronary sinus and interatrial septum
AV node
located in membranous part of the interventricular system
bundle of HIS
located in the anterior part of the muscular part of the interventricular septum
right and left bundle branches
located in walls of the ventricle
purkinje fibers
fibers from the right bundle branch that go to the anterior papillary muscle in the RV
septomarginal trabecula