Which is the smallest cranial nerve that innervates the superior oblique muscles of the eye?
1. trochlear
2. abducens
3. oculomotor
4. optic

Which of the following is not true regarding parasympathetic system?
1. Preganglionic fibers arise from the thoracic and lumbar regions of the spinal cord.
2. Terminal ganglia are located close to effector organs.
3. Preganglionic fibers are myelinated; postganglionic fibers are not.
4. Parasympathetic postganglionic fibers secrete acetylcholine.

The reflex arc ends at:
1. sensory neuron
2. motor neuron
3. effector
4. receptor

A duct within the mesencephalon, contains cerebrospinal fluid (CSF), and connects the third ventricle to the fourth ventricle is called:

A catecholamine is released as a neurotransmitter by:
1. preganglionic sympathetic fibers
2. postganglionic sympathetic fibers
3. preganglionic parasympathetic fibers
4. postganglionic parasympathetic fibers

Catecholamines like adrenaline and noradrenaline are derived from the amino acid:
1. glycine
2. tyrosine
3. tryptophan
4. glutamic acid

Cocaine acts by interfering the reuptake of dopamine. Thus, cocaine is a:
1. sympathetic agonist
2. sympathetic antagonist
3. sympathetic neurotransmitter
4. parasympathetic agonist

ANS is most directly under the control of:

1. medulla oblongata

2. cerebrum

3. cerebellum

4. hypothalamus

The neurotransmitter released by postganglionic parasympathetic neurons is:
1. acetylcholine
2. norepinephrine
3. epinephrine
4. dopamine

Parkinson disease, caused by lack of dopamine in substantia nigra, is not characterized by:
1. Tremor
2. Rigidity
3. Hypokinesia
4. Flaccid paralysis