6b) Test Exam Questions And Answers
e
What is the function of the cerebellum? - ANSWER -Coordinates movement and
balance.
What is gray matter? - ANSWER -Neuron cell bodies.
What is white matter? - ANSWER -Myelinated axons.
What is cerebrospinal fluid (CSF)? - ANSWER -Fluid that cushions and protects
CNS.
What are ventricles? - ANSWER -CSF-filled cavities in brain.
What are gyri? - ANSWER -Brain ridges.
What are sulci? - ANSWER -Shallow grooves.
What is the longitudinal fissure? - ANSWER -Separates cerebral hemispheres.
What are the five lobes of the cerebrum? - ANSWER -Frontal, parietal, temporal,
occipital, insula.
What does the frontal lobe control? - ANSWER -Voluntary movement and
reasoning.
What does the parietal lobe process? - ANSWER -Sensory information.
What does the temporal lobe process? - ANSWER -Hearing and memory.
What does the occipital lobe process? - ANSWER -Vision.
What is the insula involved in? - ANSWER -Emotion and perception.
What is the primary motor cortex? - ANSWER -Controls voluntary movement.
, What is the primary somatosensory cortex? - ANSWER -Receives sensory
information.
What is contralateral control? - ANSWER -Opposite hemisphere controls body
side.
What is Broca's area? - ANSWER -Motor speech area.
What is Wernicke's area? - ANSWER -Language comprehension area.
What is the corpus callosum? - ANSWER -Connects two hemispheres.
What are association fibers? - ANSWER -Connect areas within same hemisphere.
What are projection fibers? - ANSWER -Connect cortex to lower CNS.
What are basal nuclei? - ANSWER -Regulate voluntary movement.
What is the limbic system? - ANSWER -Emotion and memory center.
What is the reticular activating system? - ANSWER -Maintains consciousness.
What are the meninges? - ANSWER -Protective membranes of CNS.
What are the three meninges layers? - ANSWER -Dura mater, arachnoid mater,
pia mater.
What is the dura mater? - ANSWER -Tough outer layer.
What is the arachnoid mater? - ANSWER -Middle web-like layer.
What is the pia mater? - ANSWER -Delicate inner layer.
What is the blood-brain barrier? - ANSWER -Selective barrier protecting brain.
What is a reflex? - ANSWER -Rapid automatic response.
What is a reflex arc? - ANSWER -Neural pathway of a reflex.
, What are the five components of a reflex arc? - ANSWER -Receptor, sensory
neuron, integration center, motor neuron, effector.
What is a receptor? - ANSWER -Detects stimulus.
What is an effector? - ANSWER -Muscle or gland responding.
What is resting membrane potential? - ANSWER -Electrical charge difference at
rest.
What ion is most responsible for resting potential? - ANSWER -Potassium (K+).
What is depolarization? - ANSWER -Membrane becomes less negative.
What is repolarization? - ANSWER -Return to resting potential.
What is an action potential? - ANSWER -Rapid electrical signal along neuron.
What is a synapse? - ANSWER -Junction between neurons.
What is a neurotransmitter? - ANSWER -Chemical messenger between neurons.
What is acetylcholine (ACh)? - ANSWER -Neurotransmitter at neuromuscular
junction.
What is the neuromuscular junction? - ANSWER -Synapse between motor neuron
and muscle.
What is multiple sclerosis? - ANSWER -Autoimmune destruction of myelin.
What is a concussion? - ANSWER -Temporary brain injury.
What is a stroke? - ANSWER -Loss of blood flow to brain.
How many cranial nerves are there? - ANSWER -12 pairs.
How many spinal nerves are there? - ANSWER -31 pairs.
What are dermatomes? - ANSWER -Skin areas served by spinal nerves.