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WorksheetsUROP G.P Test
Total questions: 10
Worksheet time: 10mins
Which two of the following are proteins are involved in muscle contraction?
Trypsin
Actin
Interleukin
Myosin
Motilin
Which of the following is not a physiological property of smooth muscle?
Have the ability to contract generate slow sustained contractions with minimum energy expenditure
Have an intrinsic resting tension in wwhich contractions are superimposed
Have the ability to contract spontaneously
Contain intercalated disks which support synchronised contraction
Can innervate from the autonomic nervous system
Select the missing values:
The resting potential of smooth muscle tends to oscillate from __ to __ mV. These oscillations are known as slow waves.
-80 to -60 mV
-70 to -50 mV
-60 to -40 mV
-50 to -30 mV
-40 to -20 mV
The depolarisation phase of the action potential results from increased membrane permeability of which ion?
Calcium
Potassium
Sodium
Magnesium
Chlorine
The repolarisation phase of the action potential results from an increased permeability of which ion?
Calcium
Potassium
Sodium
Magnesium
Chlorine
Which two of the following plexus are situated within the walls of the intestines?
Submucosal plexus
Lumbar plexus
Sacral plexus
Coccygeal plexus
Myenteric plexus
Acetylcholine agonises which of the following receptors
M3 muscarinic
Alpha-1 Adrenoceptor
Beta-2 adrenoceptor
H1
5-HT3
Which two of the following receptors are agonised by noradrenaline?
M3 muscarinic
Alpha-1 adrenoceptor
Beta-2 adrenoceptor
H1
5-HT3
Histamine agonises which of the following receptors?
M3 muscarinic
Alpha-1 adrenoceptor
Beta-2 adrenoceptor
H1
5-HT3
Smooth muscle activation can be directly affected by blocking which ion channel
K+
Mg2+
Na+
Cl-
Ca2+
