Unlike blood vessels, the lymphatic system Select one: Can generate local vasoac

Question

Unlike blood vessels, the lymphatic system Select one: Can generate local vasoactive substances. forms a filtrate which eventually becomes urine. removes damaged erythrocytes from the circulation. has a role in controlling blood pressure. reabsorbs protein and foreign particles from the interstitial fluid. During the rapid ejection phase of the cardiac cycle, which ONE of the following statements is INCORRECT? Select one The aortic pressure is rising The ventricular pressure approaches its maximum The ventricular volume is at its lowest. The aortic valve is open The mitral valve is closed. The major mechanism controlling the diameter of arteries in the skin is: Select one: accumulation of metabolic waste products extracellular CO2 concentration myogenic sympathetic nerve activity extracellular K+ concentration

Explanation / Answer

Unlike blood vessels, the lymphatic system > reabsorbs proteinsvand foreign particles from the interstitial fluid. (reason:The lymphatic system has multiple interrelated functions, one of which is the removal of interstitial fluid from tissues)

The 1st option is incorrect as during rapid ejection phase the ventricular pressure is greater than the aorta and pulmonary artery

The major mechanism controlling the diameter of the arteries of the skin > sympathetic nervous system

Repolarization of pacemaker cells takes place due to an increased k+ permeability as k+ ions moves out from the cell.

Myocardial contratractability is increased by adrenaline

Stimulation of heart by sympathetic nervous system causes tachycardia

Increased firing of aoartic barorecrptors increased blood pressure

Chordae tendinae and papiliary muscle > keep hold AV valve frombulding into the atria during ventricular contraction

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