INCOMPLETE (LESSON 15) Heart and Arteries Lab Flashcards
Mediastinum
The space in the medial thoracic cavity between the two pleural cavities in which the heart and other organs are located
Superior vena cava
receives blood from head and upper body and drains it into the right atrium
inferior vena cava
receives blood from the legs and trunk and drains it into the right atrium
coronary veins
return deoxygenated blood from myocardium to coronary sinus
Coronary Sinus
large vessel on the left posterior heart between atria and ventricle, receives venous blood from the veins within the myocardium and drains into the right atrium.
External Heart: Posterior view
External Heart Anterior view
Frontal section of heart
Pathway of blood through heart and lungs
Sequence of excitation
image
Major arteries of the systemic circulation
[image pg 564]
Arteries from aortic arch
- Brachiocephalic trunk
- left common carotid artery
- left subclavian artery
brachiocephalic trunk
unpaired cessel originating from the aortic arch that supplies blood to the right arm and head through the right subclavian and right common carotid arteries, respectively
Vessels that exit and enter the heart
left common carotid artery
middle branch originating from the aortic arch, supplies the left side of the neck and head through external and internal carotids
left subclavian artery
the last branch of the aortic arch,supplies the left upper limb through the axillary artery
arteries of the neck and head
- Left common carotid artery
- right common carotid artery
- external carotid artery
- internal carotid artery
right common carotid artery
one of the two branches of the brachiocephalic artery, delivers blood to the right side of the head and neck
external carotid artery
paired artery located anterior to the internal carotid artery, divides into arteries such as the facial artery that supply all structures of head except brain.
internal carotid artery
paired artery located posterior to the external carotid and lateral to the pharynx, enters the skull via the carotid canal of the temporal bone, supplies the orbit and cerebrum
Arteries of the upper limb and thorax
- right subclavian artery
- vertebral artery
- internal thoracic artery
- axillary artery
- brachial artery
- radial artery
- ulnar artery
right subclavian artery
paired artery located inferior to the clavicle, supplies upper limbs through the axillary artery; the right subclavian artery is on of the two branches of the brachiocephalic artery.
vertebral artery
paired, originates from the subclavian artery, passes through the cervical vertebra and the foramen magnum, forms the basilar artery
internal thoracic artery
paired artery originating from the subclavian artery descending down the posterior side of the rib cage.