Melena
After passing through the gills of a fish, oxygenated blood circulates through the rest of the body via the circulatory system. The oxygen is distributed to tissues and organs, while carbon dioxide is picked up for removal. The cycle repeats as deoxygenated blood returns to the gills for oxygenation.
The rectum is made of tissues that include smooth muscle, mucous membrane lining, and blood vessels. These tissues allow the rectum to stretch to accommodate stool and facilitate its transportation for elimination.
After passing through the filter, the clean blood is returned to circulation through the use of a vascular access device. This device allows the blood to flow from the filter back into the bloodstream. The process helps remove waste and excess fluid from the body, improving overall kidney function in a treatment called hemodialysis.
It travels to the right ventricle passing through the tricuspid valve. Then it travels to the lungs via pulmonary arteries. The oxygenated blood from the lungs returns to the heart (into the left auricle). From the left auricle the blood travels to the left ventricle. The left ventricle pumps it to aorta. The blood travels through the arteries and veins, then it returns to the right auricle of heart.
After passing through the capillaries, blood flows into venules, which then merge to form veins. Veins carry the blood back to the heart, where it can be pumped to the lungs for oxygenation and then circulated throughout the body again.
That mean it contain old blood as if from oesophagus,stomach and upper small intestine.
After passing through the lungs, oxygenated blood travels back to the heart and is pumped out to the rest of the body through the arteries.
The lower rectum has blood vessels entering from the sides of the pelvis
The renal vein returns filtered blood to the bloodstream after passing through the glomerulus in the kidneys.
No. Bleeding from the rectum after the biopsy is normal. This is due to the needle passing through the wall of the rectum; it may strike a blood vessel causing some bleeding or it may not. Also, you may notice a small amount of blood in your urine. This should clear up after a day or two. You may also see blood in your semen. This can last a week or longer. The presence of blood or lack thereof does not indicate cancer.
Bleeding and passing blood clots through the rectum can be caused by several conditions, including hemorrhoids, anal fissures, diverticular disease, or inflammatory bowel diseases like ulcerative colitis or Crohn's disease. In more serious cases, it may indicate colorectal polyps or cancer. It’s important to seek medical attention promptly for an accurate diagnosis and appropriate treatment.
the alveolus
The upper rectum receives its blood supply from branches of the inferior mesenteric artery from the abdomen
Hypoperfusion is inadequate blood flow through an organ.
Hypoperfusion!
into the urinary bladder.
Yes