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58 Cards in this Set

  • Front
  • Back
what forms the anterior border of the mediastinum?
the sternum
what forms the posterior border of the mediastinum?
the thoracic vertebral column
what forms the superior border of the mediastinum?
the superior thoracic apeture
what forms the inferior border of the mediastinum?
the diaphragm
what forms the lateral border of the mediastinum?
the pleural cavities and lungs
what divides the mediastinum into inferior and superior portions?
the sternal angle anteriorly, and the disc between the 4th and 5th vertebrae posteriorly
what are the subdivisions of the inferior portion of the mediastinum?
anterior, middle, and posterior
what's on the right surface/border of the heart?
the right atrium
what's on the anterior surface of the heart?
the right ventricle and right auricle
what forms the posterior surface of the heart?
the left atrium
what forms the left surface/border of the heart?
the left ventricle and left auricle
what separates the atria from the ventricle (structure)
the coronary sulcus
what surface structure separates the right and left ventricles?
the interventricular sulcus
what does the thymus do?
it's involved with the development of the immune system in kids, and is mostly fat in adults
what are the layers of the pericardium?
the fibrous pericardium, the visceral serous layer, and the parietal serous layer
which layer of the pericardium is applied to the surface of the heart?
the visceral serous layer
does the fibrous pericardium strech?
what is the fibrous pericardium fused to?
the diaphragm and tunica adventitia of the great vessels
where is the pericardial cavity?
between the visceral and parietal serous layers.
what is the visceral serous layer also known as?
the epicardium, because it also forms the outer layer of the heart wall
where is the parietal serous layer?
lining the internal surface of the fibrous pericardium
what are the great vessels?
the aorta, pulmonary trunck, superior vena cava, inferior vena cava, and pulmonary veins
what veins form the superior vena cava?
the convergence of the left and right brachiocephalic veins
what enters the right atrium?
the superior and inferior vena cava
where does the trache bifurcate?
what does the ductus arteriosus connect?
the pulmonary trunk and aortic arch
what does the ductus arteriosus turn into
the ligamentum arteriosum
where do the phrenic nerves originate?
what does the phrenic nerves provide?
somatic motor innervation to the diaphragm, and sensation from the diaphragm, pericardium and mediastinal and diaphragmatic pleura
where does the vagus nerve originate?
the brainstem
where do the vagus and phrenic nerves enter the mediastinum
the superior thoracic apeture
where does the right vagus nerve travel?
along the lateral aspect of the trachea
where does the left vagus nerve travel?
on the anterolateral surface of the aortic arch
do the vagus nerves run anterior or posterior to the root of the lung?
what do the vagus nerves provide?
parasympathetic fibers to the heart, bronchial tree and esophagus via the visceral plexuses in the thorax
what is the path of the left recurrent laryngeal nerve?
comes off of the vagus, travels posterior to the ligamentum arteriosum, and ascends into the neck along the trachea
where does the right recurrent laryngeal nerve go?
around the right subclavian artery in the neck
where does the thoracic duct receive lymph from?
the lower half of the body and the upper left quadrant
where does the thoracic duct appear in the mediastinum
on the anterior aspect of the thoracic vertebrae and the right side of the thoracic aorta
where does lymphatic drainage from the lungs go?
the tracheobronchial lymph nodes
what are the three branches of the right coronary artery?
the sinuatrial nodal branch, the marginal branch, and the posterior interventricular branch
what does the sunuatrial nodal branch supply?
the SA node
what does the marginal branch supply?
the right ventricle
what does the posterior interventricular branch supply?
the right and left ventricles
what vessel supplies the AV node
the right coronary artery via a small branch
what are the branches of the left coronary artery?
the anterior interventricular branch and the circumflex branch
what is the anterior interventricular branch also known as
the left anterior descending branch or LAD
what does the LAD supply?
the left ventricle
what does the circumflex branch supply?
the left sid eof the heart
what are the three major veins of the cardiac sinus?
the great cardiac vein, the middle cardiac vein, and the small cardiac vein
what does the great cardiac vein travel with?
the circumflex artery
where does the middle cardiac vein travel?
in the posterior interventricular sulcus with the posterior interventricular artery
where does the small cardiac vein travel?
along the inferior margin of the heart with the marginal branch of the right coronary artery
where does the coronary sinus empty?
into the right atrium
at what level does the inferior vena cava pierce the diaphram?
where does the trachea exit the diaphragm?
where are the phrenic and vagus nerves in relation to the lung root?
phrenic is anterior, vagus is posterior
what makes a heart left dominant?
if the posterior interventricular artery comes from the circumflex branch