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Moodle1

Neurology1

QuestionAnswer
Upper motor neurons A) Travel to the brain B) Carry afferent signals C) Have their cell bodies in the AGH D) Have their cell bodies in the brain Have their cell bodies in the brain
Sensory neurons are also called ______ neurons a A) Motor B) Efferent C) Afferent D) Association Afferent
A subthreshold stimulus to -62mV will cause the neuron to: A) Fire a full impulse down the axon B) Begin to depolarize but not enough to fire an impulse C) Fire an impulse halfway down the axon D) Fire a weak impulse down the axon Begin to depolarize but not enough to fire an impulse
Cerebrospinal fluid (CFS) is located in the A) Epidural space B) Subrachnoid space C) Subdural space D) Arachnoid layer Subrachnoid space
Ascending tracts will: A) Carry motor information to the brain B) Carry sensory information to the brain C) Carry motor information to the skeletal muscles D) Contain cell bodies Carry sensory information to the brain
The cell bodies of the lower motor neurons are found in the: A) Descending tracts B) Posterior gray horns C) Anterior gray horns D) Ascending tracts Anterior gray horns
The cells that provide the myelin sheath of neurons in the central nervous system are the: A) Microglia B) Astrocytes C) Schwann cells/neurolemnocytes D) Oligodendrocytes Oligodendrocytes
The tigger zone of the neuron that decides when to fire is the: A) Axon hillock B) Synaptic vesicle C) Axon D) Soma Axon hillock
A type of neuroglia that is responsible for creating the blood brain barrier is the: A) Oligodendrocyte B) Astrocyte C) Ependymal cell D) Schwann cell Astrocyte
Neurons can be categorized by several characteristics. Which statements is correct? A) Type A neurons are the smallest in diameter B) Type C neurons are not capable of salutatory conduction C) Type B neurons can conduct the fastest impulses Type C neurons are not capable of salutatory conduction
During resting potential,____________are concentrated outside the neuron’s cell membrane? A) Large negative proteins B) K+ C) Na+ D) Rubber duckies with positive attitudes Na+
The resting membrane potential of an average neuron is: A) -55mV B) +30mV C) -70mV D) -90mV -70mV
The outermost connective tissue covering of a nerve is the: A) Endomysium B) Epineurium C) Endoneurium D) Perineurium Epineurium
The subarachnoid space is found between what layers? A) Pia mater and arachnoid B) Dura mater and arachnoid C) Pia mater and spinal cord D) Dura mater and bone Pia mater and arachnoid
What is the layer of the meninges that is in direct contact with the spinal column? A) Dura mater B) Arachnoid C) Epidural layer D) Pia mater Dura mater
IPSP’s A) Cause a resting potential B) Facilitate the neuron’s firing C) Result in slight hyperpolarization D) Result in slight depolarization Result in slight hyperpolarization
The axons traveling downward from L2 towards the coccyx before exiting the intervertebral foramina are called the: A) Filum terminale B) Cauda equine C) Conus medullaris D) Spinal nerves Cauda equine
Neuroglia: A) Support, nourish, and insulate the neurons B) Are found in the CNS only C) Are responsible for conducting nerve impulses D) Are found in the PNS only Support, nourish, and insulate the neurons
The skin and muscles of the back and posterior neck are innervated by neurons that travel in the: A) The ulnar nerve B) The phrenic nerve C) The dorsal rami D) The ventral rami The dorsal rami
Which type of fiber would conduct the slowest nervous impulse? A) Type C fiber B) Type A fiber C) Type B fiber Type C fiber
The effectors of the autonomic nervous system include all of the following except: A) Glands B) Smooth muscle C) Skeletal muscle D) Cardiac muscle Skeletal muscle
What lines the central canal? A) Oligodendrocytes B) Microglia C) Ependymal cells D) Multipolar neurons Ependymal cells
Spinal nerves contain: A) Motor neurons B) Sensory and motor neurons C) Sensory neurons Sensory and motor neurons
The conus medullaris is found at what level on the vertebral column? A) L4 B) L2 C) Can’t be found, it’s a mystery D) Coccyx E) Sacrum L2
Considering one neuron, the impulse is conducted towards the cell body of the neuron from the ____ A) Axons B) Axon hillock C) Dendrites D) Synaptic vesicles Dendrites
The dorsal and ventral roots of each spinal segment unite to form: A) A spinal nerve B) The cervical enlargement C) A spinal meninge D) The dorsal root ganglion A spinal nerve
The extensors of the elbow and wrist are innervated by the: A) Radial nerve B) Median nerve C) Axillary nerve D) Musculocutaneous nerve Radial nerve
Carpal tunnel syndrome is caused by entrapment of the: A) Ulnar nerve B) Median nerve C) Radial nerve D) Axillary nerve Median nerve
When the voltage inside the neuron reaches +30mV A)The sodium gates close B)The sodium gates open C)The postassium gates close D)The music stops The sodium gates close
The ___plexus is formed by the rami of C5-T1 A)Thoracic B)Brachial C)Cervical D)Lexus Brachial
The brain and spinal cord comprise the ____nervous system A)Sympathetic B)Peripheral C)Autonomic D)Central Central
A hyperpoliarized neuron is A)Depolarized B)Entrapped C)Facilitated D)Inhibited inhibited
A neuron with a membrane potential of -90mV is in state of: A)Depolarization B)Hyperpolarization C)Repolarization D)Reversal of polarity Hyperpolarization
The ___nerve innervates the diaphragm A)Ansa cervicalis B)Radial C)Axillary D)Phrenic Phrenic
The division of the autonomic nervous system known as the craniosacral division is the _ A)Parasympathetic division B)Motor division C)Sympathetic division D)Autonomic division Parasympathetic division
Bundles of myelinated axons in the PNS are called: A)Columns B)Nerves C)Tracts D)Horns Nerves
The type of sensory neurons whose cell bodies are found in the dorsal root ganglion are: A) Bipolar neurons B)Unipolar neurons C)Multipolar neurons D)Polar bear like Unipolar
The division of the nervous system that is fight or flight is A)The sensory B)The sympathetic C)The somatic D)The parasympathetic The sympathetic
Sensory neurons enter the spinal cord throught the A)Lateral gray horn B)Ventral root C)Central canal D)Dorsal root Dorsal root
Contains mostly cell bodies of lower motor neurons A)Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissure D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral grey horn Anterior gray horn
Contains axons of sympathetic postganglionic neurons A) Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissured D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral grey h Grey ramus communicans
Indentation on the anterior surface of the cord A)Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissure D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral grey horn Anterior median fissure
Indentation on the posterior surface of the cord A) Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissured D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral grey horn Posterior median sulus
Mixed nerve, located between the roots and the rami A) Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissured D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral grey h Spinal nerve
Contains cell bodies of autonomic postganglionic neurons A)Anterior gray horn B)Sympathetic chain ganglia C)Anterior median fissured D)Grey ramus communicans E)Ventral root F)Posterior median sulcus G)Spinal nerve H)Posterior ramus I)Lateral gr Lateral grey horn
Created by: surewinlina