A 67-year-old woman with a long history of liver cirrhosis was seen in the emergency department. In this patient with portal hypertension, which of the following veins is most likely to be dilated?
(A) Right colic vein
(B) Inferior epigastric vein
(C) Inferior phrenic vein
(D) Suprarenal vein
(E) Ovarian vein
Ans: (A) Right colic vein
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Which of the following molecules are considered key molecules at metabolic crossroads?
A) glucose-6-phosphate, pyruvic acid, acetyl CoA B) glucose-6-phosphate, lactic acid, acetyl CoA C) acetone, beta-hydroxybutyric acid, ATP D) ATP, pyruvic acid, lactic acid
All but one of the following occur during the inflammatory response. Select the example below that does not describe the process of inflammation
A) Vasoconstriction will prevent excessive blood loss due to injury. B) Chemotaxis draws leucocytes to the site of injury. C) Increases capillary permeability. D) Release of prostaglandins resulting in pain.
Nutrients undergo the last stages of digestion by enzymes located on the cells of the small intestine; then the nutrients are absorbed by these same cells by way of various membrane transport processes. Adipose cells absorb and store excess food energy in the form of fat. You and the other students in the physiology lab you are taking are doing an analysis of cell membrane composition, on unknown
animal tissue samples labeled A and B. All lab groups determined that sample A contained, on average, 81% protein, 18% lipid, and 1% carbohydrate. Sample B contained 85% lipid, 10% protein, and 5% carbohydrate. Sketch a graph of the class data. You now have to make a logical conclusion as to which sample is more likely to be intestine and which is adipose tissue. What do you conclude, and why? What will be an ideal response?
Which one of the following is NOT a mechanism that aids lymph return to the heart?
A) milking action of skeletal muscles B) pressure changes within the thorax C) the pumping action of the heart D) smooth muscle contractions within the lymphatic vessels E) presence of valves within the larger lymph vessels