What happens to the fish when it passes through the cardiac sphincter until it reaches the place where the duodenum becomes jejunum? Explain this phenomenon in your own words with your basic knowledge of GI tract physiology.

for its oxygen then it may die, forming rct. The severity of this condition depends on the precise location of the occlusion, which downstream tissues are involved, and how large an area of tissue dies. Use Figure 4.9 as a reference and list the flow of blood through both circuits in order, beginnng with the right atrium (don't forget to include the heart valves). 1. If an embolus breaks off in a systemic vein in the leg, it would be able to pass through: It would occlude: 2. If an embolus formed in the left ventricle, it would be able to pass through: 3. It would occlude: 4.

41. When looking at TV with your legs stretched out, your messenteric arteries _________ so that blood can flow to the small intestine.       coil     dilate     twist     constrict

What are the important differences in the overall metabolic needs of a fish and a turtle and the ability of their circulatory systems to meet those needs? Select all that apply. Fish are less able to meet their metabolic needs than are turtles.  Fish have a two-chamber heart (one atrium and one ventricle) and turtles have a three-chambered heart (two atria and one ventricle). Turtles are endothermic and fish are ectothermic  Blood flows directly to other organs after being oxygenated in turtles, but return to the heart after being oxygenated in fish.  Turtles have a double,-circuit circulatory system whereas fish have a single circulatory system.