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Questions and Answers
What is the main function of the Peripheral Nervous System (PNS)?
What is the main function of the Peripheral Nervous System (PNS)?
- To carry impulses to and from the brain (correct)
- To carry only sensory information from the CNS
- To coordinate voluntary muscle movements
- To carry impulses within the brain and spinal cord
Which division of the Peripheral Nervous System (PNS) is responsible for conveying impulses from sensory receptors to the CNS?
Which division of the Peripheral Nervous System (PNS) is responsible for conveying impulses from sensory receptors to the CNS?
- Efferent division
- Motor division
- Somatic sensory division (correct)
- Visceral sensory division
What is the function of the Motor division in the Peripheral Nervous System (PNS)?
What is the function of the Motor division in the Peripheral Nervous System (PNS)?
- Transmit impulses solely to the brain
- Control voluntary muscle movements
- Convey impulses from sensory receptors to the CNS
- Bring about motor responses in effector organs (correct)
Which type of fibers transmit impulses from visceral organs to the CNS in the Peripheral Nervous System (PNS)?
Which type of fibers transmit impulses from visceral organs to the CNS in the Peripheral Nervous System (PNS)?
What distinguishes the Somatic Nervous System (SNS) from the Autonomic Nervous System (ANS)?
What distinguishes the Somatic Nervous System (SNS) from the Autonomic Nervous System (ANS)?
Why is not all skeletal muscle activity controlled by the Somatic Nervous System (SNS) considered voluntary?
Why is not all skeletal muscle activity controlled by the Somatic Nervous System (SNS) considered voluntary?
What type of brain tumors are most common?
What type of brain tumors are most common?
Which cell type plays a key role in circulating cerebrospinal fluid?
Which cell type plays a key role in circulating cerebrospinal fluid?
What function do astrocytes serve in relation to neurons?
What function do astrocytes serve in relation to neurons?
Which glial cell type wraps nerve fibers with myelin sheaths?
Which glial cell type wraps nerve fibers with myelin sheaths?
What is the primary role of microglia in the CNS?
What is the primary role of microglia in the CNS?
Which glial cell type forms a living barrier between capillaries and neurons?
Which glial cell type forms a living barrier between capillaries and neurons?
What is the function of glutamate, GABA, dopamine, serotonin, acetylcholine, norepinephrine, and histamine in the nervous system?
What is the function of glutamate, GABA, dopamine, serotonin, acetylcholine, norepinephrine, and histamine in the nervous system?
What is the primary reason why blood-borne alcohol, nicotine, and anesthetics can affect the brain?
What is the primary reason why blood-borne alcohol, nicotine, and anesthetics can affect the brain?
What is the function of the synaptic cleft?
What is the function of the synaptic cleft?
Which region of the Spinal Cord is enlarged where nerves serving the upper and lower limbs leave?
Which region of the Spinal Cord is enlarged where nerves serving the upper and lower limbs leave?
Which type of cells myelinate axons outside the central nervous system?
Which type of cells myelinate axons outside the central nervous system?
What type of responses does the neuron and synapse networks in the Spinal Cord produce to sensory stimulation?
What type of responses does the neuron and synapse networks in the Spinal Cord produce to sensory stimulation?
What is the function of myelin sheath around nerve fibers?
What is the function of myelin sheath around nerve fibers?
What is the role of neurilemma (sheath of Schwann) in peripheral nerve fiber regeneration?
What is the role of neurilemma (sheath of Schwann) in peripheral nerve fiber regeneration?
Where are the cell bodies of sensory neurons located in the spinal cord?
Where are the cell bodies of sensory neurons located in the spinal cord?
What are Nodes of Ranvier?
What are Nodes of Ranvier?
Which part of the gray matter in the spinal cord contains motor neurons of the somatic nervous system?
Which part of the gray matter in the spinal cord contains motor neurons of the somatic nervous system?
What is the function of ascending tracts in the spinal cord?
What is the function of ascending tracts in the spinal cord?
What is the function of the olfactory nerve?
What is the function of the olfactory nerve?
Which nerve supplies motor fibers to four of the six muscles that control eye movement?
Which nerve supplies motor fibers to four of the six muscles that control eye movement?
What is the main function of the trigeminal nerve?
What is the main function of the trigeminal nerve?
Which division of the autonomic nervous system is known as the 'fight-or-flight' system?
Which division of the autonomic nervous system is known as the 'fight-or-flight' system?
Where are the first neurons of the sympathetic division located?
Where are the first neurons of the sympathetic division located?
What type of fibers does the vestibulocochlear nerve mainly transmit?
What type of fibers does the vestibulocochlear nerve mainly transmit?
Which nerve supplies motor fibers to activate the sternocleidomastoid and trapezius muscles?
Which nerve supplies motor fibers to activate the sternocleidomastoid and trapezius muscles?
What is the main function of the glossopharyngeal nerve?
What is the main function of the glossopharyngeal nerve?
Which nerve carries both sensory impulses from skin of face and mucosa, and motor fibers that activate chewing muscles?
Which nerve carries both sensory impulses from skin of face and mucosa, and motor fibers that activate chewing muscles?
What function does the facial nerve mainly regulate?
What function does the facial nerve mainly regulate?
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