Question

1.The sympathetic nervous system will do the following except:

a)increase vasodilation in the blood vessels in skeletal muscle
b)increase vasoconstriction in the skin
c)increase vasodilation in the blood vessels in the kidneys
d)increase vasodilation in the blood vessels in cardiac muscles

2.Parasympathetic acetylcholine opens Ca2+channels when regulating hearts.

a)True
b)False

3.Essential hypertension could result from the following except
a)kidney disease resulting in decreased urine production
b)increased salt uptake with reduced ability of kidneys to filter
c)increased sympathetic nerve activity
d)increased total peripheral resistance

4)Oncotic pressure normally helps to draw fluid into
a)interstitial fund
b)venous ends of capillaries
c)arterial ends of capillaries

Answer 1

1. The most correct answer for the given question is option 'C'.

Because the sympathetic nervous system stimulation increases vaso dilation in blood vessels in skeletal muscles and also in cardiac muscles of heart. But in the case of skin, blood vessels in kidney and digestive tract, the sympathetic nervous system stimulation cause vasoconstriction.

2. The correct option is 'b'. Because the sympathetic nervous system plays an important role in regulating the heart. Parasympathetic stimulation causes acetylcholine release but it will not opens the Ca+ channel.

3. The most suitable answer for the given question is option ' b '. Because the salt uptake will cause increased water retention in the body. In this case increased salt uptake with kidney dysfunction cause essential hypertension.

Other options are incorrect regarding to the question.

4. The correct option is 'b'. Because the oncotic pressure helps to pull fluid into the circulatory system mainly within the venous end of capillaries with lower pressure.

Other options are incorrect regarding to the given question.