The length of the external iliac artery in Thais.

In a dissection of 501 pelvic halves of Thai adult cadavers, the average length of the external iliac artery was 9.7 cm.

Common iliac vein in Thais.

From the dissection of 274 adult Thai cadavers, the sites of the beginning and the sites of the ending of the common iliac vein were recorded. The most common out of ten sites of the beginning was the ala of the sacrum (84%). From six sites of the ending, the most common was the body of the 5th lumbar vertebra (69.0%).

Iliolumbar artery in Thais.

In a dissection of 335 pelvic halves of Thai adult cadavers, the iliolumbar arteries were classified into nine types according to the common or separate orgins of their branches. The percentage of type 1 to 9 are 38.8, 17.3, 36.1, 5.1, 0.3, 0.9, 0.6, 0.6 and 0.3, respectively.

Common iliac artery in Thais.

From the dissection of 327 adult Thai cadavers the beginning, the sites of the ending and the length of the common iliac artery were recorded. The common three out of seven sites of the beginning which were anterior to the following structures respectively were : the body of the 4th lumbar vertebra (45.6%), the intervertebral disc between the 4th and the 5th lumbar vertebrae (28.7%) and the body of the 5th lumbar vertebra (21.7%). From seven sites of ending, the first three common were anterior to the following structures respectively: the ala of the sacrum (44.0%), the body of the 5th lumbar vertebra (27.1%), and the intervertebral disc between the 5th lumbar vertebra and the sacrum (17.0%). The average length of the common iliac artery was 4.7 cm.

Internal iliac artery in Thais.

From 322 dissected adult Thai cadavers, the sites of the ending and length of the internal iliac artery were recorded. The ending was found at the following sites:- (1) on the wall of the greater pelvis in 13.0 percent, (2) at the pelvis brim in 67.7 percent, (3) on the wall of the lesser pelvis in 19.3 percent, The average of the length was 4.1 cm.

Superficial veins of upper extremities in Thais.

From 272 dissected adult Thai cadavers the patterns of superficial veins in the cubital region were recorded. The presence of the median cubital vein connecting the cephalic with the basilica vein was founded in 76.7 percent. With the cephalic vein turning medially to join the basilica vein a little above the elbow joint, the brachial portion of the cephalic vein was either rudimentary, absent or taken up by an accessory cephalic vein in 6.6 percent. The cephalic and basilic veins had no communication with each other in the elbow region in 13.4 percent. In the absence of the median cubital vein, the upper end of the median vein of the forearm divided into a median cephalic vein and a median basilica vein to join respectively the cephalic and basilic veins in 3.3 percent. The distribution of the various types was not statistically different from that in the Japanese, American Negroes and America Whites, but significantly different from that in the British and Indian.