MidTerm Flashcards
Mesoderm layer that contains the myocardial and endocardial cardiogenic precursors:
Splanchnopleuric
Mesopluric
Ectopleuric
Somatopleuric
Splanchnopleuric
Which of the following statements is true
a) The Eustachian ridge separates the left atrium and the right ventricle
b) The Eustachian ridge separates the os of the coronary sinus and the IVC
c) The Eustachian ridge separates the IVC and the SVC
d) The Eustachian ridge is a landmark for the AV node
b) The Eustachian ridge separates the os of the coronary sinus and the IVC
Which of the following postnatal structures are derived from the bulbus cordis? Choose all the apply.
Conus Venosus
Conus Arteriosus
Sinus Venorum
Right Ventricle
Left Ventricle
Conus Arteriosus
Right Ventricle
A collateral branch that is an anastomosis between a branch of the left anterior descending artery and the conus artery of the right coronary artery, is known as:
Circle of Vieussens
Circle of Todaro
Circle of Marshall
Circle of Krugel
Circle of Vieussens
Which of the following statements is true?
a) Veins have more layers than arteries
b) Veins, unlike the arteries do not have valves
c) Blood pressure is normally high in the veins
d) Veins in the limbs contain numerous valves
d) Veins in the limbs contain numerous valves
In what percentage of the population is the SA-node supplied by the left atrial artery?
15%
40%
18%
10%
40%
Which of the following statements is true?
a) The nodules of Arantius are nodules found within the cardiac skeleton
b) The nodules of Arantius prevents the mitral valves from prolapse
c) The nodules of Arantius are found on the free edge of each cusp of the semilunar valves
d) The nodules of Arantius are present in the tricuspid valves
c) The nodules of Arantius are found on the free edge of each cusp of the semilunar valves
Which of the following vessels connects to the Great Cardiac Vein and drains the left atrium?
Small Cardiac Vein
Middle Cardiac Vein
Thebesian Vein
Oblique Vein of Marshall
Oblique Vein of Marshall
Which of the following statements is true?
a) Cardiac output is expressed in liters per minute
b) Very low cardiac output will not affect one’s health
c) Cardiac output can be measured by taking one’s pulse
d) Cardiac output is expressed by the amount of blood per heart beat
a) Cardiac output is expressed in liters per minute
What are the organs that process blood?
a) Thymus, organ of Corti, skeletal muscles
b) Liver, intestine, brain
c) Malleus, incus, stapes
d) Lungs, kidneys, liver
d) Lungs, kidneys, liver
At what stage in the developmental timeline of human heart embryology does the implantation of the embryo into the uterus occur?
a) Day 18-26
b) Day 17-26
c) Day 5-12
d) None of the above
c) Day 5-12
All the great vessels are found in the:
anterior mediastinum
posterior mediastinum
fibrous mediastinum
middle mediastinum
middle mediastinum
Which of the following statements is true?
a) The heart starts to beat on the 22nd day of embryonic life
b) The heart is the last organ to develop during embryonic life
c) The heart will start to beat immediately after birth
d) The heart starts to beat immediately during fertilization
a) The heart starts to beat on the 22nd day of embryonic life
What is the function of baroreceptors?
a) To maintain blood pressure
b) To deliver less blood to the heart
c) To increase blood pressure
d) To deliver more blood to the heart
a) To maintain blood pressure
Which of the following statements is true?
a) 70-80% of O2 in the blood is extracted by the myocardium
b) 10-20% of O2 in the blood is extracted by the myocardium
c) 90-100% of O2 in the blood is extracted by the myocardium
d) 70-80% of O2 in the blood is extracted by the epicardium
a) 70-80% of O2 in the blood is extracted by the myocardium
The valve of the inferior vena cava is known as the:
Eustachian Valve
Thebesian Valve
Tricuspid Valve
None of these options
Eustachian Valve
Which of the following is an artery that branches from the left main coronary artery between the left anterior descending and the left circumflex artery?
AV nodal artery
Septal branch
Ramus intermedius
Oblique artery
Ramus intermedius
Venous system responsible for draining blood from the thoracic wall to the Superior Vena Cava:
Brachiocephalic Vein
Jugular Vein
Subclavian Vein
Hepatic Vein
Brachiocephalic Vein
The embryonic heart starts to loop during the:
a) 30-32nd day
b) 22-28th day
c) 12-14th day
d) 16-20th day
b) 22-28th day
Which of the following statements is true?
a) Brachiocephalic veins connected to the coronary sinus
b) Brachiocephalic veins are located on the lower extremities
c) Brachiocephalic veins drain blood from the liver
d) Brachiocephalic veins are formed by the merging of the jugular & subclavian veins
d) Brachiocephalic veins are formed by the merging of the jugular & subclavian veins
Which internodal pathway directs impulses from the right atrium to the left atrium?
Morgani’s Bundle
Wenckebach Bundle
Thorel’s Bundle
Bachmann’s Bundle
Bachmann’s Bundle
What purpose does the lymphatic system serve?
Choose all that apply.
a) Provide non-specific immunity through B Cells
b) Absorb nutrients from the gastrointestinal tract
c) Capture and destroyed bacteria and foreign particles
d) Filter digestive elements absorbed in the small and large intestine
c) Capture and destroyed bacteria and foreign particles
Failure of the septum primum and septum secundum to fuse after birth may cause:
Truncus arteriosus
Atrial septal defect
Tetralogy of Fallot
Ventricular septal defect
Atrial septal defect
In what percentage of the population is the SA-Node supplied by the Right Coronary Artery?
15%
18%
10%
60%
60%
