Physiology 1 Ese

33 Questions | Total Attempts: 80

SettingsSettingsSettings
Please wait...
Physiology Quizzes & Trivia

Today we’ll be looking at the biological sub-category of physiology, which includes such topics as the central nervous system, cell bodies, the cytoplasm, depolarisation and more. What can you tell us about these topics? Let’s take a look.


Questions and Answers
  • 1. 
    Which of the following cell types is not a supporting cell or glial cell of the central nervous system?
    • A. 

      Schwann cell

    • B. 

      Astrocyte

    • C. 

      Oligodendrocyte

    • D. 

      Ependymal cell

  • 2. 
    The glial cell that has both amoeboid properties to permit migration through the CNS and phagocytosis properties to remove foreign and degenerated material from the CNS tissue, is the
    • A. 

      Schwann cells

    • B. 

      Satellite cells

    • C. 

      Oligodendrocytes

    • D. 

      Microglia

  • 3. 
    The ____ are large, star-shaped cells with numerous cytoplasmic processes radiating outward. They help form the blood-brain barrier.
    • A. 

      Microglia

    • B. 

      Astrocytes

    • C. 

      Oligodendrocytes

    • D. 

      Satellite cells

  • 4. 
    A grouping of cell bodies located within the CNS is known as a
    • A. 

      Tract

    • B. 

      Nerve

    • C. 

      Nucleus

    • D. 

      Ganglion

  • 5. 
    During depolarisation of the plasma membrane,
    • A. 

      Sodium ions move rapidly into the cell

    • B. 

      Potassium ions move rapidly out of the cell

    • C. 

      Membrane permeability to sodium ions decreases

    • D. 

      The outside of the cell becomes positively charged relative to the inside

  • 6. 
    A stimulus that is just strong enough to initiate an impulse in a neuron is called a ________ stimulus
    • A. 

      Base line

    • B. 

      Synaptic

    • C. 

      Threshold

    • D. 

      Differential

  • 7. 
    Suppose both excitatory and inhibitory neurons synapse with a single postsynaptic neuron. What determines if an action potential is initiated in the postsynaptic neuron?
    • A. 

      The kind of neuron involved

    • B. 

      The size of the neuron involved

    • C. 

      Whether the neuron is myelinated or non-myelinated

    • D. 

      The number of EPSPs in relation to the number of IPSPs

  • 8. 
    Impulses are conducted to the soma by the
    • A. 

      Axon

    • B. 

      Axon hillock

    • C. 

      Dendrites

    • D. 

      All of the above

  • 9. 
    An important structure in both learning and memory is the __________.
    • A. 

      Hippocampus

    • B. 

      Pons

    • C. 

      Medulla

    • D. 

      Cerebellum

  • 10. 
    An individual who has an eating disorder along with intense thirst and wildly varying body temperatures may have a dysfunction of the
    • A. 

      Pons

    • B. 

      Medulla

    • C. 

      Thalamus

    • D. 

      Hypothalamus

  • 11. 
    Which of the following is not a lobe of the cerebral cortex?
    • A. 

      Occipital

    • B. 

      Parietal

    • C. 

      Insula

    • D. 

      Cerebellar

    • E. 

      Temporal

  • 12. 
    The basal nuclei (or basal ganglia) are masses of grey matter that function primarily in the
    • A. 

      Perception of auditory and visual stimuli

    • B. 

      Control of voluntary movements

    • C. 

      Relay of sensory and motor information

    • D. 

      Synthesis and release of important regulatory hormones

  • 13. 
    The ventral root portion of the spinal cord is composed of
    • A. 

      Axons of sensory (afferent) spinal neurons

    • B. 

      Nuclei (cell bodies) of sensory spinal neurons

    • C. 

      Axons of motor (efferent) spinal neurons

    • D. 

      Nuclei (cell bodies) of motor spinal neurons

  • 14. 
    There are _____ pairs of cranial nerves and ____ pairs of spinal nerves
    • A. 

      10;30

    • B. 

      31;12

    • C. 

      12;31

    • D. 

      30;10

  • 15. 
    Most sensory input that ascends through the spinal cord and brainstem projects to the
    • A. 

      Pineal gland

    • B. 

      Hypothalamus

    • C. 

      Thalamus

    • D. 

      Mammillary bodies

  • 16. 
    The following are the steps involved in a reflex arc. 1. activation of a sensory neuron 2. activation of a motor neuron 3. response by an effector 4. arrival of a stimulus and activation of a receptor 5. information processing The proper sequence of these steps is
    • A. 

      1, 3, 4, 5, 2

    • B. 

      4, 5, 3, 1, 2

    • C. 

      4, 1, 5, 2, 3

    • D. 

      4, 3, 1, 5, 2

  • 17. 
    The 'knee jerk' reflex is an example of a:
    • A. 

      Axon reflex

    • B. 

      Extensor thrust reflex

    • C. 

      Cross extensor reflex

    • D. 

      Stretch reflex

  • 18. 
    Which higher Centre of the brain does not participate in the control of lower motor neurons?
    • A. 

      Basal ganglia

    • B. 

      Cerebellum

    • C. 

      Hippocampus

    • D. 

      Cerebral cortex (precentral gyrus)

  • 19. 
    Muscle stretch (monosynaptic) reflexes
    • A. 

      Are dependent on descending activation from higher motor neurons

    • B. 

      Involve sensory neurons, spinal cord interneurons and motor neurons only

    • C. 

      Are not present in all skeletal muscles

    • D. 

      Include the knee jerk reflex response to striking the patellar tendon

  • 20. 
    Which of the following cranial nerves does not contain paraympathetic fibres?
    • A. 

      Optic nerve (II)

    • B. 

      Facial nerve (VII)

    • C. 

      Glossopharyngeal nerve (IX)

    • D. 

      Vagus nerve (X)

  • 21. 
    The pacinian corpuscle is a cutaneous receptor for
    • A. 

      Heat

    • B. 

      Cold

    • C. 

      Touch

    • D. 

      Pressure

    • E. 

      Pain

  • 22. 
    Which statement regarding autonomic sympathetic neurons is false?
    • A. 

      They are usually activated as a single unit (mass activation).

    • B. 

      They emerge from the brain and sacral regions.

    • C. 

      They form white and grey rami communicantes fibres.

    • D. 

      They may have ganglia located along the spinal cord.

  • 23. 
    The parasympathetic nervous system is characterised by peripheral ganglia near the:
    • A. 

      Organs and with short postganglionic fibres

    • B. 

      Organs and with long postganglionic fibres

    • C. 

      Spinal cord and with short postganglionic fibres

    • D. 

      Spinal cord and with long postganglionic fibres

  • 24. 
    All of the following characterise the autonomic nervous system EXCEPT
    • A. 

      A two neuron efferent chain

    • B. 

      The presence of nerve cell bodies in the CNS

    • C. 

      The presence of nerve cell bodies in the ganglia

    • D. 

      Innervation of skeletal muscles

  • 25. 
    Which neuron releases noradrenaline as a neurotransmitter?
    • A. 

      Preganglionic sympathetic fibres

    • B. 

      Postganglionic sympathetic fibres

    • C. 

      Preganglionic parasympathetic fibres

    • D. 

      Postganglionic parasympathetic fibres

  • 26. 
    The ‘fight-or-flight’ response includes all of these EXCEPT __________.
    • A. 

      Hunger

    • B. 

      Pounding heart

    • C. 

      Sweating palms

    • D. 

      All of these are part of the fight-or-flight response

  • 27. 
    Which statement about muscarinic receptors is false
    • A. 

      They are not found in autonomic ganglia or at the neuromuscular junctions of skeletal muscle fibres.

    • B. 

      They are subtypes of adrenergic receptors.

    • C. 

      They are not affected by the drug, curare, which specifically blocks nicotinic receptors.

    • D. 

      They can be found on the target organs of specific postganglionic parasympathetic fibres.

  • 28. 
    Accommodation, the ability of the eyes to keep the image focused on the retina as distance is changed, results from contraction of the
    • A. 

      Circular muscles.

    • B. 

      Ciliary muscles.

    • C. 

      Radial muscles.

    • D. 

      Pupil.

  • 29. 
    Four refractory media of the eye, listed in the sequence in which they refract light, are
    • A. 

      Vitreous humour, lens, aqueous humour, cornea

    • B. 

      Cornea, aqueous humour, lens, vitreous humour

    • C. 

      Cornea, vitreous humour, lens, aqueous humour

    • D. 

      Lens, aqueous humour, cornea, vitreous humour

  • 30. 
    Which of the following about myopia is false?
    • A. 

      It is also known as nearsightedness.

    • B. 

      It may result from an eyeball that is too short.

    • C. 

      It is corrected by glasses with concave lenses.

    • D. 

      The blurry image is focused in front of the retina.

  • 31. 
    The correct pathway for impulses leaving the retina is
    • A. 

      Photoreceptors, ganglion cells, bipolar cells, optic nerve

    • B. 

      Optic nerve, photoreceptors, ganglion cells, bipolar cells

    • C. 

      Photoreceptors, bipolar cells, ganglion cells, optic nerve

    • D. 

      Optic nerve, ganglion cells, photoreceptors, bipolar cells

  • 32. 
    As opposed to rods, the cones
    • A. 

      Are less sensitive in low light conditions

    • B. 

      Provide colour vision

    • C. 

      Provide greater visual acuity (sharpness of detail)

    • D. 

      Are more responsive in the daylight

    • E. 

      All of these correctly describe cones.

  • 33. 
    The blind spot of the eye is where
    • A. 

      More rods than cones are found

    • B. 

      The macula lutea is located

    • C. 

      Only cones occur

    • D. 

      The optic nerve leaves the eye