Nervous System Functions and Pathways Quiz
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Questions and Answers

What is the primary functional unit of the nervous system?

  • Synapse
  • Neuron (correct)
  • Axon
  • Neurotransmitter

Which structure is located after the second lumbar vertebra?

  • Cauda Equina
  • Conus Medullaris
  • Cerebellum
  • Filum Terminale (correct)

What happens when the spinal nerves are damaged?

  • Enhanced reflex responses
  • Increased sensory perception
  • Improved muscle coordination
  • Causes paralysis (correct)

What kind of pathway allows information from multiple sources to converge?

<p>Converging pathway (A)</p> Signup and view all the answers

In the context of the reflex arc, which neuron is responsible for producing action in the muscle?

<p>Motor neuron (B)</p> Signup and view all the answers

Which component does NOT form part of the basic neuronal pathway?

<p>Neuroglia (A)</p> Signup and view all the answers

Where is the white matter located in the spinal cord?

<p>Superficial layer (D)</p> Signup and view all the answers

Which type of neuron synapses with the motor neuron in a reflex action?

<p>Interneuron (B)</p> Signup and view all the answers

What is the primary role of the association areas in the motor function process?

<p>To recognize and organize motor functions before they are initiated (D)</p> Signup and view all the answers

Which tract extends directly from upper motor neurons in the cerebrum to lower motor neurons in the spinal cord?

<p>Corticospinal Tract (A)</p> Signup and view all the answers

What is the function of the lateral columns in the spinal cord?

<p>To control goal-directed limb movements (C)</p> Signup and view all the answers

What is primarily controlled by indirect tracts compared to direct tracts?

<p>Posture and balance (D)</p> Signup and view all the answers

Which area is primarily responsible for the planning and coordination of motor movements?

<p>Basal Nuclei (C)</p> Signup and view all the answers

In most individuals, where is the speech area located?

<p>Left cerebral cortex (C)</p> Signup and view all the answers

What is the main function of the reticulospinal tract?

<p>Regulate motor functions for posture and balance (B)</p> Signup and view all the answers

How do the basal nuclei influence muscle activity?

<p>By either inhibiting or exciting muscles (A)</p> Signup and view all the answers

What is the primary function of the brain and spinal cord?

<p>Integration of information (B)</p> Signup and view all the answers

Which system controls voluntary movements of skeletal muscles?

<p>Somatic Nervous System (C)</p> Signup and view all the answers

Which aspect is NOT maintained by the nervous system?

<p>Physical strength (D)</p> Signup and view all the answers

What distinguishes the Autonomic Nervous System from the Somatic Nervous System?

<p>It regulates involuntary functions. (B)</p> Signup and view all the answers

What is the role of afferent neurons in the nervous system?

<p>Send sensory information to the CNS (A)</p> Signup and view all the answers

Which part of the nervous system is responsible for fight or flight responses?

<p>Sympathetic Division (A)</p> Signup and view all the answers

What connects the preganglionic neuron to the postganglionic neuron in the Autonomic Nervous System?

<p>Autonomic ganglion (A)</p> Signup and view all the answers

What encompasses all nervous tissue outside the Central Nervous System?

<p>Peripheral Nervous System (A)</p> Signup and view all the answers

Which type of neuron has many dendrites and a single axon?

<p>Multipolar neurons (C)</p> Signup and view all the answers

What role do Satellite cells play in the nervous system?

<p>Provide support and nutrition to neurons (D)</p> Signup and view all the answers

What structure provides insulating material around axons in the PNS?

<p>Schwann cells (A)</p> Signup and view all the answers

What is the primary role of myelin sheaths?

<p>Increase the speed of action potential generation (C)</p> Signup and view all the answers

What characterizes bipolar neurons?

<p>One axon and one dendrite (A)</p> Signup and view all the answers

Which type of ion channel opens in response to a change in membrane potential?

<p>Voltage gated channels (C)</p> Signup and view all the answers

What happens during depolarization?

<p>Membrane potential difference decreases (B)</p> Signup and view all the answers

Which cells are responsible for forming myelin sheaths in the CNS?

<p>Oligodendrocytes (D)</p> Signup and view all the answers

What is the primary function of the inferior colliculi?

<p>Major relay center for auditory nerve pathways (D)</p> Signup and view all the answers

Which structure is responsible for regulating general body movement?

<p>Substantia Nigra (D)</p> Signup and view all the answers

Which of the following is NOT a function of the midbrain?

<p>Controlling the left hemisphere functions (B)</p> Signup and view all the answers

What divides the cerebrum into left and right hemispheres?

<p>Longitudinal fissure (D)</p> Signup and view all the answers

What is a primary responsibility of the superior colliculi?

<p>Facilitating visual reflexes and eye movements (D)</p> Signup and view all the answers

Which part of the brain is referred to as the largest part?

<p>Cerebrum (B)</p> Signup and view all the answers

Which hemisphere of the brain is primarily associated with functions such as math and speech?

<p>Left hemisphere (A)</p> Signup and view all the answers

What does the Diencephalon primarily connect?

<p>Brainstem and cerebrum (C)</p> Signup and view all the answers

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