Neural Control and Coordination- Quiz 10

Which of the following systems transmits impulse from CNS to involuntary organs and smooth muscles?

• Somatic neural system

• Sympathetic neural system

• Parasympathetic neural system

• Autonomic neural system

Bipolar neuron –

• Has two dendrons

• Has one dendron and one axon

• Is interneuron

• Has no dendron

Which of the following system relays impulse from CNS to skeletal muscles?

• Somatic neural system

• Sympathetic neural system

• Parasympathetic neural system

• Autonomic neural system

Which of the following cells form myelin sheath around axon –

• Neuroglial cell

• Neuron

• Schwann cell

• Astrocyte

When a neuron is not conducting any impulse i.e. resting, the axonal membrane is –

• Comparatively more permeable to K⁺ and impermeable (nearly impermeable) to Na⁺

• Impermeable to negatively charged proteins present in the axoplasm

• Both a and b

• More permeable to Na+ ions than K+ ion.

What generally maintains the electrical charge across the neuronal membrane?

• Na⁺ - K⁺ pump

• Action potential

• resting potential

• Voltage - gated channels

The impulses from CNS to skeletal muscles are relayed through

• SNS

• Somatic neural system

• PSNS

• All of these

Unidirectional transmission of the nerve impulse is maintained by –

• Interneurons

• Myelin sheath

• Synapse

• Membrane polarity

The new potential developed on post-synaptic membrane is –

• Always excitatory

• Always inhibitory

• May be excitatory or inhibitory

• Neither excitatory nor inhibitory

Which of the following regions of the brain is incorrectly paired with its function?

• Cerebellum – Language comprehension

• Medulla oblongata – Homeostatic control

• Cerebrum – Calculation and contemplation

• Corpus callosum – Communication between the left and right cerebral cortices