Cardiovascular Anatomy Flashcards
What embryological layer does the heart develop from in the third week
mesoderm in the cephalic region
The primitive heart tube is formed by these two tubes composed of angioblastic tissue
endocardial
What three dilations are formed from the primitive heart tube folding on itself
atrial, ventricular, and bulbos cordis
the proximal end of the heart tube is formed by the _____ _____ and the distal end is formed by the _____ ____
sinus venosus, truncus arteriosus
Name the connection that allows oxygenated blood in the fetus to travel from the let pulmonary artery to the arch of the aorta
ductus arteriosus
The ductus arteriosus closes shortly after birth forming this
ligamentum arteriosum
Most common congenital heart disease
Ventricular septal defect
What does the most common form of atrial septal defect affect
ostium secundum
what is the most common congenital cyanotic heart disease
fallot’s tetralogy
What conditions make up fallot’s tetralogy
pulmonary stenosis, ventricular septal defect, right ventricular hypertrophy, and over-riding (dextroposition) of the aorta
What type of shunts does cyanosis occur?
right to left shunts
what are the acyanotic congenital hear diseases (D)
atrial septal Deffect, ventricular septal Defect, persistent Ductus arteriorsus (all left to right)
Which congenital disorder results from failure of the ducuts arteriosus to close after birth
persistent ductus arteriosus
What are the two origins of the right atrium
sinus venosus and true atrium
The Rough part (area with pectinate) of the right atrium is derived from what
tRue atrium
The Smooth part of the RA is derived from this
Sinus venosus
What ridge separates the smooth and rough parts of the RA
crista terminalis
What two openings are found in the RA
SVC and IVC
what is the oval depression found in the RA interatrial septum
fossa ovale
the fossa ovalis of the RA is a remnant of this structure in a fetus
fetal foramen ovalis (septum primum)
What is the name of the ridge located above the fossa ovalis
limbus
What is the limbus of the fossa ovalis a remnant of
septum secondum
what percentage of the myocardial venous blood drains into the heart via the coronary sinus in the RA
60-70
Left atrium has how many pulmonary vein openings carrying oxygenated blood from the lungs
4 (same embryological origins as RA)
Name of a large fleshy piece located in the RV that carries a major part of the right bundle branch
septomarginal branch (moderator band)
a smooth funnel-shaped inlet to the opening of the pulmonary valves in the RV
infundibulum
The LV is __x more thick than the RV
3
Valve located at the 2nd RIGHT intercostal space near the sternal border
aortic
Valve located at the 2nd LEFT intercostal space near the sternal border
pulmonary
Valve located at the 4TH LEFT intercostal space near the sternal border
tricuspid
Valve located at the 5TH LEFT intercostal space AWAY from the sternal border
mitral
branches of right coronary artery
sinu-atrial, right marginal, posterior interventricular, and atrioventricular
Where does the right coronary artery distribute blood
RA, RV, 30% of LA, AV node (85% of population), SA node (55% of population), posterior 1/3 of the interventircular septum
Branches of the left coronary artery
circumflex, anterior interventricular, and left marginal
Where is blood distributed from the left coronary artery
LV, 70% of LA, anterior 2/3 of interventricular septum
What sinus drains 60-70% of the hearts venous blood
coronary, the rest of the heat is drained by the anterior cardiac vein into the RA
The coronary arteries tributaries
great cardiac, small cardiac, middle cardiac, and oblique cardiac
Structure located in the RA and bound by the tricuspid valve, opening of the coronary sinus, and the tendon of Todaro
Triangle of Koch
The SA node is innervated by what structures
sympathetic from T1-5, parasympathetic from CN X
the cardiac plexus is divided into two parts, deep and superficial, where are there locations
superficial - below the arch, deep - behind the arch of the aorta
Where does the superficial part of the cardiac plexus receive fibers from
superior cervical sympathetic g. and inferior cardiac branch of the vagus
At what vertebral level does the abdominal aorta end
L4
Paired visceral branches of the abdominal aorta
inferior phrenic, middle adrenal, renal, gonadal
Paired parietal branches of the abdominal aorta
1st to 4th lumbar arteries
Unpaired branches of the abdominal aorta
celiac trunk (T12), superior mesenteric a. (L1), inferior mesenteric a. (L3), and median sacral a (L4)
The abdominal aorta bifurcates into these two branches at the end
common illiac which divide into internal and external iliac ateries
Internal iliac artery has these 9 branches (Some Inherit Money, Others Inherit Insanity, Usually. Isn’t Life Silly)
Anterior division: Superior vesical, Inferior vesical, Middle rectal, Obturator, Inferior gluteal, internal pudendal, Uterine and vaginal in females
Posterior division: Iliolumbar Lateral sacral, Superior gluteal
External illiac has these three branches (CID)
Cremasteric, Inferior epigastric, Deep circumflex (CID)
The external iliac continues past the inguinal ligament as the femoral artery and has these brances (SDSD)
Superficial external pudendal, Deep external pudendal, Superficial circumflex, Deep femoral. (SDSD)
the femoral artery passes through this canal to become the popliteal artery
adductor
the popliteal artery bifurcates into these two arteries below the popliteal fossa
anterior and posterior tibial a.
The posterior tibial a. passes _____ to the medial malleolus forming these two branches
posterior, medial and lateral plantar
the anterior tibial artery continues in the foot as this
dorsalis pedis artery
the dorsalis pedis artery of the anterior tibial supplies the dorsum of the foot with this branch
arcuate artery
the left subclavian artery comes off of this artery
arch of the aorta
the right subclavian artery comes off of this branch
brachiocephalic trunk
Branches of the subclavian artery
internal thoracic, vertebral, thyrocervical trunk, costocervical trunk, and dosral scapular
Branches of the thyrocervical trunk (SIT)
Suprascapular, Inferior thyroid, Transverse cervical (SIT)
Branches of costocervical trunk
superior intercostal artery and deep cervical
At what location does the subclavian artery become the axillary
outer border of the 1st rib
The pectoralis minor muscle divides the axillary artery into these three parts
superior-thoracic, thoraco-acromial and lateral thoracic, and subscapular, posterior and anteiror circumflex humeral
the axillary artery becomes the brachial beneath this structure
teres major
the brachial artery terminates in the cubital fossa into these to branches
radial and ulnar
branches off of the radial artery (RCMP)
Radial recurrent, Carpal, Muscular, and superficial Palmar (RCMP)
SUperficial palmer branch is formed from this
Ulnar artery
the deep palmer branch is formed from this
radial artery
superficial palmer branch lies between these two structures
palmer aponeurosis and digital flexor tendons
deep palmer branch lies between these two structures
palmar interossei and deep digital flexor tendons