Sympathetic stimulation causes ______________?
(A) Arteriolar constriction
(B) Ciliary muscle contraction
(C) Sweat secretion
(D) All of the above
Resting membrane potential of nerve fiber is_______________?
(A) -70 mv
(B) -90 mv
(C) -55 mv
(D) + 35 mv
Pain sensation from the lateral extremities is transmitted by________________?
(A) Spino thalmamic tract
(B) Dorsal column
(C) Corticospinal tract
(D) Spinocerebellar tract
Respiratory center is situated in_______________?
(A) Medulla oblongata
(B) Spinal cord
(C) Midbrain
(D) Hypothalamus
Preganglionic parasympathetic fibers are_______________?
(A) Somatic only
(B) Parasympathetic
(C) Sympathetic
(D) Cholinergic
Sensations of pain from teeth and temperature are carried by_______________?
(A) Corticospinal tract
(B) Corticobulbar tract
(C) Lateral spinothalamic tract
(D) Ventral spinothalamic tract
Lesions within the basal ganglia produce the following signs except_______________?
(A) Hypotonia
(B) Tremor
(C) Hemiballismus
(D) Athetosis
Which of the following is not true for myelinated nerve fibers______________?
(A) Impulse through myelinated fibers is slower than non- myelinated fibers
(B) Membrane currents are generated at nodes of Ranvier
(C) Saltatory conduction of impulses is seen
(D) Local anesthesia is effective only when the nerve is not covered by myelin sheath
Tremors are seen in disorder of_________________?
(A) Basal ganglia
(B) Pain pathway
(C) Pyramidal tract
(D) Parathyroid gland