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Moodle1
Neurology1
| Question | Answer |
|---|---|
| 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 |
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surewinlina
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