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GA2-Heart/Mediast.

Heart and mediastinum

QuestionAnswer
Portion of the cardiac conduction system innervated by sympathetics from the left. AV Node
The SA node is located in the right atrial wall between the auricle and the SVC at the upper end of the ___? Crista terminalis
Vein that accompanies right coronary a. around to the posterior surface of the heart. Small cardiac vein
Specific chamber of the heart which lies against the esophagus. Left atrium
Name the papillary muscles of the right ventricle. Anterior, posterior, septal
Left ventricle of the heart is responsible for this type of circulation. Systemic
Valve that guards the exit of the right ventricle. Pulmonary
Give the composition of the parietal pericardium. Fibrous outer layer and serous inner layer
Upper smooth area of the right ventricle ventricle that guides blood to a great artery. Conus arteriosus
Muscles lining auricles only Pectinate muscles
Structure that transmits the right crus of the AV bundle across the right ventricular cavity. Septomarginal trabeculae (moderator band)
Part of the conduction system known as the "pacemaker". SA node
Name given to the entire posterior surface of the heart Base
Smallest sized vessels, drain directly into the right atrium and other chambers. Venarum minimarum (thebesian veins)
Most posteriorly located chamber of the heart. Left atrium
Besides the IVC and SVC, name two tributaries of the right atrium. Coronary sinus, venarum minimarum, anterior cardiac veins
The apex of the heart points: (ant/post, sup/inf, left/right) anterior inferior left
Upper smooth area of the left ventricle that guides blood to a great artery. Aortic vestibule
When comparing the thickness of the right ventricle to the left, one can say the Right Ventricle is... 1/3rd as thick as the left ventricle
Ridge-like mm located in the ventricles. Trabeculae carnae (log jam)
Companion vessel of the anterior interventricular a. Great cardiac v.
Another name for the mitral valve Bicuspid valve (left atrioventricular, left AV)
Physiologically, how does blood enter the coronary arteries? Recoil of the aorta
The AV node is located in the ____ septum near the ostium of the _____. Interatrial, coronary sinus
Name the cusps/valvules of the pulmonary(semilunar) valve. Right, left, anterior
Extends from SVC to IVC, divides right atrium into two parts. Crista terminalis
Specific name given to area where the coronary arteries begin. Aortic sinus
Portion of the cardiac conduction system located in the wall of the right atrium near the SVC. SA node
Portion of the cardiac conduction system innervated by the left vagus nerve. AV node
Name given to the right AV valve. Tricuspid valve
Vessel which accompanies the posterior interventricular vessel of the heart. Middle cardiac vein
Name given to the nipple-like muscles of the ventricles. Papillary muscles
Name the cusps of the left AV valve. Anterior, posterior
Name given to the string-like structures that attach to the cusps of the AV valves - prevent eversion of cusps into the atria. Chordae tendineae
Right ventricle is responsible for this type of circulation. Pulmonary
Structurally define the upper border of the superior mediastinum. Plane of the first rib
Structurally define the lateral border of the superior mediastinum. Pleural sacs
Structurally define the posterior border of the superior mediastinum. Vertebral column
Structurally define the lower border of the superior mediastinum. Diaphragm
During their course the phrenic nn. pass inferiorly ______ (ant/post) to the roots of the lungs and onto the surface of the _______ before entering the diaphragm. Anterior, pericardial sac
The right pulmonary a. runs ____ (ant/post) to the _____ aorta. Posterior, ascending
Specific artery that supplies the upper surface of the respiratory diaphragm. Superior phrenic a.
Using anatomical landmarks define the lower border of the superior mediastinum. Horizontal line through the angle of the sternum, passing through T4-T5 disk.
Vein that drains the upper 2nd, 3rd, and 4th intercostal spaces. Highest intercostal
Besides the right ascending lumbar v., a branch of the IVC, and the right posterior intercostal vv., name 4 tributaries that normally drain into the azygos vein. Right highest intercostal, hemiazygos, accessory hemiazygos, right bronchial
The left pulmonary artery runs ____ (ant/post) to the _____ part of the aorta. Anterior, descending
As the left recurrent laryngeal nerve loops under the arch of the aorta, it lies immediately to the left of the ____. Arteriosus ligament
From proximal to distal, the second branch of the arch of the aorta. Left common carotid artery
In which specific mediastinae(um) are the insertion of pulmonary veins into the heart? Middle
In which specific mediastinae(um) are the left and right brachiocephalic veins? Superior
In which specific mediastinae(um) are the left and right bronchi? Posterior
In which specific mediastinae(um) is the esophagus? Posterior, superior
In which specific mediastinae(um) are the distal part of phrenic nerves? Middle
In which specific mediastinae(um) is most of the azygos vein? Posterior
In which specific mediastinae(um) is most of the thymus? Superior
In which specific mediastinae(um) is the tracheal bifurcation? Posterior
In which specific mediastinae(um) is the hemiazygos v.? Posterior
In which specific mediastinae(um) is the ascending aorta? Middle
In which specific mediastinae(um) is the thoracic splanchnic n.? Posterior
In which specific mediastinae(um) is the inferior half of the SVC? Middle
Name the tributaries of the hemiazygos vein not including ascending lumbar branch of left renal vein. Left subcostal, caudal 3-4 left posterior intercostal, esophageal v, mediastinal vv.
The ligamentum arteriosum connects what two vessels? Left pulmonary artery and aortic arch
Name the tributary to the left brachiocephalic v. whose right counterpart is NOT a tributary to the right brachiocephalic v. Left highest posterior intercostal
During its course the pulmonary trunk passes first ____ (ant/post/left/right) to(of) the ascending aorta, then immediately (ant/post/left/right) to/of it. Anterior, left
The azygos vein runs superiorly, then arches over the _____ to empty into the ____. Root of the right lung, SVC
Besides the posterior intercostals, name the parietal branches of the descending thoracic aorta. Subcostal a., superior phrenic a., posterior intercostal aa.
Which pulmonary artery is the longest and largest? Right
Which pulmonary artery runs posterior to the ascending aorta? Right
The specific vessel which normally directly drains 5,6,7, and 8 left posterior intercostal veins. Accessory hemiazygos
There are weak anastomoses between what names arteries on the surface of the heart. anterior and posterior interventricular aa.
Name three grooves seen on the external heart. Coronary sulcus, anterior interventricular sulcus, posterior interventricular sulcus.
Raised upper margin of the fossa ovalis. Limbus of fossa ovalis
Created by: sdschwartz