Question

TRACINGS: 36. Trace a drop of blood from the left ovary of human to the Lt antecubital region (include all valves and vessels) (10pts.) You may NOT need all the lines

Answer 1

Blood drop will travel the following path to reach left antecubital region-

Left ovarian vein --> left renal vein --> inferior venacava --> right atrium --> tricuspid valve --> right ventricle --> semilunar valve --> pulmonary artery --> pulmonary capillaries --> pulmonary veins --> left atria --> bicuspid valve --> left ventricle --> aortic valve --> aorta --> arch of aorta --> left subclavian artery --> axillary artery --> Brachial artery.

Blood drop from left ovarian vein will drain into renal vein first and then to inferior venacava, whereas right ovarian vein directly drains into inferior venacava.

Blood drop them reaches right atria and passes to right ventricle, from where it is sent to lungs for deoxygenated of blood, via pulmonary artery which is guarded by semilunar valves. After oxygenation, blood passes to the left atria via pulmonary veins and from left atria to left ventricle. Left ventricle pumps blood into aorta which is the major artery of body and distributes oxygenated blood to the body tissues with the help of it's branches. To the antebrachium, blood drop will have to travel in left subclavian artery which continues further as axillary artery. Axillary artery gives various branches into the arm and continues as Brachial artery in the antebrachium region. Brachial artery further divides into radial artery and ulnar artery.