The partial pressure of nitrogen in the atmosphere is greater than the partial pressure of oxygen in the atmosphere
Indicate whether the statement is true or false
T
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The blood vessel that supplies blood to the pancreas, the small intestine, and most of the large intestine is the
A) celiac artery. B) inferior mesenteric vein. C) hepatic portal vein. D) gastric vein. E) superior mesenteric artery.
This layer of filtration membrane is composed of collagen fibers and proteoglycans in a glycoprotein matrix
a) glomerular endothelial cells b) basal lamina c) pedicels d) filtration slits e) slit membrane
All of the following statements refer to events of tissue repair. Put the events in proper numbered order according to the sequence of occurrence. The initial event, the injury, is already indicated as number one.
1. The skin receives a cut that penetrates into the dermis and bleeding begins. 2. Epithelial regeneration is nearly complete. 3. Granulation tissue is formed. 4. Blood clotting occurs and stops the blood flow. 5. The scar retracts. 6. Macrophages engulf and clean away cellular debris. 7. Fibroblasts elaborate connective tissue fibers to span the break.
Which cells of the pancreatic islets produce glucagon?
A) delta cells B) F cells C) beta cells D) alpha cells