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Lecture Ch. 19

Part 3: Circulatory Pathways

QuestionAnswer
how many systemic arteries leave the heart and how many return blood to the heart 1 leaves and 3 return
have same names and run alongside the arteries deep veins
run in the subcutaneous tissues and don't have corresponding arteries superficial veins
Veins tend to be more interconnected and have more variable courses t or F True
high O2 levels what color. low what color red-high low-blue
how does the pulmonary trunk divide right and left pulmonoary arteries
pulmonary trunk blood that is low in O2 and high in CO2 t or F TRUE
the systemic cessels are named by body region traversed organ served, or bone followed TRUE
not all vessels are symmetrical or paired TRUE
division of the aorta ascending, aortic arch, decending abdominal aorta
ascending aorta gives off the right and left coronary arteries only
aortic arch gives off the brachiocephalic trunk, the left common carotid, and the left subclavian. The brachiocephalic trunk divides into the right common carotid and the right subclavian.
T or F. The thoracic aorta becomes the abdominal aorta after passing through the diaphraghm. The abdominal aorta divides to become the left and right common iliac arteries TRUE
the common carotid arteries divide in the upper neck,, into the internal and external carotids
the external carotids give off multiple branches which supply most of the head except for the brain and the eye. T or F TRUE
internal carotids supply what % of the cerebrum as well as the eye. They give off the ophthalmic arteries to the eyes and then divide into the anterior and middle cerebral arteries 80%
the first part of the internal carotid is called the carotid sinus=site of baroreceptors
verebral artereis rise from teh subclavian arteries and provide what % of blood supply to the cerebrum 20%
vertebral arteries pass through the foramen magnum then unite on the anterior surface of the brainstem to form the basilar artery which then divides into the posterior cerebral arteries TRUE
the internal carotids and vertebral sprovide all of the blood supply to the brain; TRUE
they are connected by the anterior and posterior communicating arteries which forms the circle of Willis. this can provide alternate routes of blood flow in the event that one vessels is blocked. TRUE
when the subclavian artery passes ove rthe 1st rib it becomes the axillary artery
the axillary has several branches and becomes the brachial artery
the brachial artery divides and becomes radial and ulnar arteries
ulnar and radial anastamose and form the palmar arches
the internal thoracic (mammary) artery brances from teh subclavian and gives off the anterior intercostal arteries; supplies ant. chest wall and used for coronary bypass surgery TRUE
the descending aorta gives off the posterior intercostal artereis, along with branches to the lungs. esophagus and diaphragm. TRUE
the abdominal aorta divides at about the level of the umbilicus into the common iliac arteries. TRUE
common iliac arteries divide into internal and external iliacs
they supply the pelvic organs the exteranl genitalia and the gluteus muscles internal iliacs
pass out of the abdominal cavity and become the femoral artery external iliac
gives of the deep femoral artery which supplies the thigh muscles femoral artery
passes post through an opening in the adductor muscles called the adductor hiatus and becomes the popliteal artery femoral artery
runs post to the knee joint and divides into the ant and post tibial arteries popliteal artery
supplies the anterior muscle compartment of the leg and becomes the dorslis pedis artery on the dorsum of the foot anterior tibial artery
gives off the fibular artery which supplies the muscles of the lateral calf post tibial artery
anastamose in the foot to form the plantar arch dorsalis pedis and post tibial arteries
drains everything above the diaphragm except for the coronary and pulmonary circulations sup vena cava
unite to form the sup vena cava right and left brachiocephalic veins
form the brachiocephalic veins internal jugular and subclavian veins
drains everything below the diaphragm and is located to the right of the abdominal aorta inferior vena cava
come together to form the inf vena cava common iliac veins
beins in the brain drain into dural sinuses which drain to the internal jugular veins
drain the scalp and face external jugular veins. empty into the subclavian vein
drain into the subclavian veins verebral veins
run alongside the common carotid arereis and join the subclaian veins to form the brachiocephalic veins inernal jugular veins
2 deep veins w/ same name found along side the areries in the limbs TRUE
radial, ulnar, brachial, axillary, an subclavian veins deep veins
cephalic bsilic and median cubital veins superficial veins
runs along the lateral side of the upper limb and drains into the exillary vein cephalic vein
runs along the medial side and joins the brachial vein to form the exillary vein basili vein
connects the two and often used for DRAWING BLOOD median cubital vein
drains the posterior thoracic wall and empties into the sup vena cava it can also provide collateral flow between the IVC and SC in certain situations azygos vein system
veins of the abdomen have the same names as the corresponding arteries TRUE
anterior tibial, fibular,post tibial, popliteal, femoral, external iliac, inernal iliac, and common iliac deep veins
great saphenous and samll saphenous superficial vins of the lower limbs
runs along the medial side of the lower limb and empties into teh femoral VEIN great saphenous
The longest vein in teh body and commonly used for coronary bypass grafting great saphenous vein
runs along the post calf and drains into the popliteal vein small saphenous
Created by: 1671530535