The peripheral nervous system in humans PNS consists of cranial nerves and:

1. spinal cord

2. sensory nerves

3. the brain

4. spinal nerves

Blood brain barrier formation is the function of:

1. microglia

2. Schwann cell

3. astrocyte

4. oligodendrocytes

The neuron in humans with many nerve fibers arising from its cell body and that carries impulses to the effectors would be called as:

The regulation of the composition of cerebrospinal fluid is the function of:

1. astrocytes

2. oligodendrocytes

3. microglia

4. ependyma

All the following statements regarding nerve impulse conduction are correct except:
1. Myelinated neurons have a higher conduction velocity than unmyelinated neurons.
2. Nerve impulses occur in an all-or-none manner.
3. The neuron cannot be stimulated during the depolarization phase.
4. The strength of impulses carried along a single nerve fiber can vary with the strength of their stimulus.

The neurotransmitter responsible for sleep induction and mood stabilization is:
1. GABA
2. acetylcholine
3. serotonin
4. dopamine

The organ converts one energy form into another would be called as:

1. effector

2. transducer

3. generator

4. receptor

Sensors that provide information about joint angle, muscle length, and muscle tension, which is integrated to give information about the position of the limb in space are called as:
1. Golgi tendon organs
2. Meissner’s corpuscles
3. proprioceptors
4. nociceptors

The sense of smell differs from other senses as it:

1. is transmitted only to cerebellum.

2. does not transmit to the cerebral cortex via the thalamus

3. is non functional in blinds

4. uses lateral inhibition

The middle ear:
1. is responsible for balancing the body.
2. is responsible for transmitting sound waves from the outer ear to the inner ear
3. contains the otolith organs
4. is a cavity in parietal bone.