EXAM 2 - part 6

what is the largest vein of the heart

coronary sinus

what does the great cardiac vein accompany

anterior interventricular artery

what does the middle cardiac vein accompany

posterior interventricular artery

what does the small cardiac vein accompany

right coronary artery near the right lower margin of the heart

what are the smallest veins of the heart

venae cordis minimae

the venae cordis minimae run within the walls of the heart and drain primarily to the ___

right atrium

what is the condition where there is substernal chest pain upon exertion due to a partial occlusion of coronary artery branches

angina pectoris

where are the most common sites for myocardial infarctions (order most common to least)

1. anterior interventricular artery

2. right coronary artery

3. circumflex artery

t/f

the heart has its own contractile mechanisms and does not require a nerve supply to beat rhythmically

true

what is a nerve supply to the heart necessary for

alter rate of beating

parasympathetic innervation to the heart is from ___ nerve

vagus

t/f

the heart conduction system is made of nerve tissue

false - specialized cardiac muscle fibers

what is the natural pacemaker of the heat

sinoatrial node

what is the order of the conduction system

sinoatrial node

atrioventricular node

atrioventricular bundle

right bundle branch

left bundle branch

subendocardial plexus of conduction cells (purkinje fibers)

what is the remnant of the embryonic ductus arteriosus

ligamentum arteriosum

what level is the ligamentum arteriosum located

sternal angle

the __ nerve hooks under the aortic arch posterior to the ligamentum arteriosum

left recurrent laryngeal

the __ nerve hooks under the right subclavian nerve

right recurrent laryngeal

what level is the aortic hiatus

t12

the thoracic duct begins in the abdomen as a dilation of 3 abdominal trunks (intestinal, lumbar, and descending intercostal) called the

cisterna chyli

at what level does the thoracic duct cross to the left side

t5/t6

the thoracic duct drains lymph of the entire body except...

right upper extremity

right thoracic cavity

right side of head and neck