Nervous System

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Nervous System

• Jeopardy
• Test Review
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Brain Neuron Eye Ear Misc.
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What is the largest part of the brain called?
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cerebrum
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What part of the brain controls involuntary
actions?
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brain stem
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What is the function of the corpus callosum?
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It connects the left side of the brain to the
right side of the brain.
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What part of the brain controls balance?
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cerebellum
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What structure joins with the medulla to form the
brain stem?
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pons
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Name the three types of neurons.
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sensory, motor, and interneurons
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What part of the neuron receives the message
first?
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dendrites
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What part of the neuron carries the message away
from the cell body?
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axon
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What part of the neuron releases the message?
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axon tips (or axon terminals)
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What type of neuron carries a message from the
central nervous system to the effector?
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motor neuron
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What is the iris?
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colored part of the eye
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What is the outermost layer of the eye?
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sclera
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What is the innermost layer of the eye?
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retina
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What are the light sensitive receptor cells that
help you to see colors?
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cones
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What helps to give the eye its round shape?
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vitreous humor
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What part of the ear acts as a funnel to catch
sound waves?
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external ear
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What is the first structure of the ear to vibrate?
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eardrum
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Name the three smallest bones in the human body.
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hammer, anvil, stirrup
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What part of the inner ear helps to maintain
balance and body position?
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semicircular canals
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What part of the inner ear helps with hearing and
sends the vibrations to the auditory nerve?
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cochlea
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What is an automatic response of the body that
occurs very rapidly and without conscious control?
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reflex
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Why does a reflex occur quickly and automatically?
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The message bypasses the brain.
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When the nervous system makes you feel thirsty,
what body process is it helping you to carry out?
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homeostasis
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Why is the sensation of pain important?
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It alerts the body to danger.
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How does a nerve impulse move from the axon tips
of one neuron to the dendrites of the next neuron?
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It becomes a chemical in order to cross the
synapse.
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More Brain More Neuron More Eye More Ear
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More Misc.
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What is the touch outer covering of the brain
called?
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dura mater
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A bruise-like injury to the brain is called a
_________.
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concussion
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The ______ ____ supply blood flow to the brain.
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capillary beds
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What is the master gland that is located on the
underside of the brain?
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pituitary gland
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What structure of the brain aids in smelling?
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olfactory bulbs
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What type(s) of neurons are found in spinal
nerves?
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sensory and motor neurons
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What type of neurons are found only in the brain
and spinal cord?
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interneurons
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What type of neuron receives a message from the
receptor cells?
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sensory neuron
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Name the 5 structures that make up a neuron.
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dendrites, cell body, nucleus, axon, and axon tips
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State the 6 step path of a nerve impulse.
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receptor, sensory neuron, interneuron, motor
neuron, effector, muscle/gland
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What is the function of the light sensitive
receptor cells called rods?
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They help you to see in dim light.
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Which structure provides blood flow to the eye?
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choroid
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Which structure transports the nerve impulses of
the eye to the brain?
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optic nerve
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Which structure controls the size of the eyes
opening?
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iris
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Which structure focuses incoming light?
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lens
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Which bone in the ear is the first to vibrate?
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hammer
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Which bone in the ear is the last to vibrate?
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stirrup
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SeeingLightHearing______
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vibrations
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Is hearing a physical or chemical sense?
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physical
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What is the tube-like structure that carries
sound waves from the external ear to the ear drum?
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ear canal
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Which two senses are considered chemical senses?
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smell and taste
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Name the four divisions of the nervous system.
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central, peripheral, autonomic, andsomatic
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A message sent or received by your nervous system
is called _______.
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impulse
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Which part of the neuron contains the control
center of the cell?
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cell body
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Describe the position of the image that is
projected onto the retina.
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It is upside down.