Five resin casts of the coronary arteries and the hislological sections of three hesrts with the arteries injected Chinese ink were prepared in human adult autopsy subjec s . 3187 branches of the coronary arterial trees were counted and measured . By Strahler's system the branch pattern of the coronary arterial tree was described . According to the analysis of the geometrical morphology data, the relationships between the diameter , the length and the number of branches in each order and the branch order show the exponential function respectively , which have high correlation significance (p

The blood vessels and nerves of the sole skin of 50 feet of Chinese adult cadavers were observed with an operative microscope. The blood supply of the central part of the sole comes mainly from the medial and lateral plantar ar teries (MPA and LPA). Their average diameter is larger than 2.0mm and their trunk is usually longer than 80mm. When a skin flap is designed, the cutaneous branches from LPA are much better than those from MPA so far as the number of the branches, their external diameter and the extent of the distribution are considered.When the sole skin is stripped away, the cut ends of the cutaneous arteries present a multiple dot-like appearance on the surface of the superficial fascia. The external diameter of the arterial branches, the number of the branches in an unit area, and the total area of the cross section of the branches are different among the regions of the heel and the metatarsal heads, and the central part of the sole. They vary with the weight born on each region.All the cutaneous arteries of the sole are accompanied with veins respectively. Most of the MPA and LPA are accompanied with two veins with a diameter larger than 1.9mm on average. The two veins terminate by joining into two posterior tibial veins.

The origin of 200 occipital arteries on 100 cadavers were investigated. 199 cases of the occipital arteries originated from the external carotid artery and only one was found arising from the common carotid. The artery arised as an independent stem in 80.5% of cases and from a common stem with other arteries in 19.5%. In 85.6% of cases the site of origin of the artery was within 10mm above or below the mandibular level. In addition, the sites of origin of the occipital and facial arteries were compared. It was found that the site of the occipital artery was usually higher than that of the facial artery in contrary to the statement of the conventional textbooks that they are in a level opposite to each other.

The vessels and nerves in the pectoacromial region were dissected under an operative microscope on 50 human specimens. The main blood supply of this region comes from the thoracoacromial artery. Its deltoid, pectoral, and clavicular branches all have secondary branches to the pectoralis major. In 94% of the cases, the .deltoid branch sends out a cutaneous branch known as the thoracoacromial cutaneous branch. Its external caliber is 1.22mm in average and it distributes over the cutaneous region covering the anterior portion of the del-toideus, the subclavian fossa, and the upper portion of the pectoralis major with an average area of 80.63cm2.An extended pectoralis major myocutaneous flap can be designed taking the thoracoacromial artery or its deltoid branch as its pedicle. This myocutaneous flap can contain an axial skin flap supplied by the thoracoacromial cutaneous branch.

For the 1st and 2nd pts.see ibid vol.11,no.4t p.241 & p.251 (1989).The anterior interventricular branch and the circumflex branch of the left coronary artery and the right coronary artery were excised from 7 autopsy adult subjects without heart diseases.A biaxial loading test lor the vascular specimens was completed,which was simultaneously finished in the internal thoracic artery (ITA) and the great saphenous vein (GSV) of the same subjects in order to compare with the coronary arteries.Elastic moduli of the vessels increased with increasing pressure in the vessels.As compared with GSV the mechanical properties of ITA ap-proach the coronary arteries.It is assumed that the coronary artery bypass grafting choose ITA before GSV in view of the mechanical properties of the vascular walls.A ratio of collagen per elastin may be used as an index of the arterial elasticity.It is discussed that the biomechanical properties of the arteries may influence the pathogenesis of the arteriosclerosis.

For the first pt.see ibid vol.11 no.4,p.241 (1989).The anterior interven-tricular branch aad the circumflex branch of the left coronary artery,and the right coronary were excised from 7 autopsy adult subjects without heart diseases.A biaxial loading test for the vascular specimens was completed,which was simultaneously finished in the internal thoracic artery(ITA) and the great saphenous vein (GSV) of the same subjects in order to compare with the coronary arteries.Stress-strain relationships of the vessels were expressed by the exponential strain energy function.The meaning of the two-dimensional material constants for the vessels are discussed.

126 adult male Wistar rats were used.A 4?6 cm~2 standard island skin flap wasraised on one side of the abdominal wall of the rats.In the flaps of the experim-ental group,only the superficial epigastric and lateral thoracic vein were preserved.The process of revascularization,histological changes,glycogen content and lactatedehydrogenase (LDH) activity of the flap were observed postoperatively with Indian ink injection,X-ray,microscopy and microspectrometry.The shrinking rateand degree of edema of the experimental flap were also observed and all comparedwith those of the control flaps.The results indicated that the flaps of experimentalgroup had a higher survival rate and lower degree of edema,and its glycogencontent and LDH activity decreased markedly on the lst postoperative day,andincreased gradully afterwards.Revascularization started on the 2nd postoperative day,such as capillary anastomoses passing through the cut edges of the flap,vesselsentering the flap from the recipient bed,vessels becoming tortous,dilated,andmarkedly proliferated.The results suggest that there was a true plasmatic circulationat the early stage in the simple venous flap and turns to a normal vascular type byrevascularization.The vividness of a flap may be indicated by the variance of themetabolism of carbohydrate in the skin flap.

The micro-vascular architecture of the mucosa and submucosa of human tongue was studied under the surgical microscope and scanning electron microscope. The long branches of the profunda lingual arteries and the terminal branches of the dorsal lingual arteries anastomose into a thick layer of arterial network, under the mucosa and over the superficial muscle of the whole body and root of the tongue. Arteriolae spring from the submucosal arterial network, which get into the mucosa to form the capillary network of mucosa and the 9apillary plexuses of variant papillae.The relationship between the architecture of the lingual submucosal arterial network and the design of flaps, and the clinical significance of tongue diagnostic signs has been discussed.

0.05). The ITA contains relatively higher content of elastin as compared with the others (P

The microvasculature of the rectus abdominis muscle in dogs was observed under scanning electron microscope. The specimens were treated by vascular corrosion east and enzymic digestive methods. Some new results had been obtained.The intramuscular arterioles penetrate the muscular fasciculus with almost right angle. The capillaries go along the myofibers oriented parallel to each other and arrange fascicularly. The morphologically distinct precapillary sphincters are apparent at the original region of the capillaries. There are abundant anastomosing channels between the capillaries which constitute ladder-like microvascular networks encircling the myofibers. Sometimes, the calibre was partial enlarged in the anastomosing channel, which may be beneficial to store of the blood oxygen.The physiological significance of the intramuscular microvasculature was discussed.