Q.1
Which of the following correctly describes the order of the nerve pathways?
  • Receptor, motor neuron, CNS, sensory neuron, effector
  • Effector, sensory neuron, motor neuron, CNS, receptor
  • Receptor, sensory neuron, CNS, motor neuron, effector
  • Receptor, CNS, sensory neuron, motor neuron, effector
Q.2
A group of students did an experiment about taste. They were given salt, sugar, coffee, vinegar and lemon solutions to taste through a straw but they were blindfolded and had to hold their nose firmly closed. They had difficulty identifying the five flavors. Why?
  • Sight is important for taste
  • They weren't allowed to touch the containers with the solutions in
  • The straw takes away the taste
  • Identifying a flavor requires both smell and taste
Q.3
Sense organs have receptors. Receptors detect changes in the environment. Which word describes one of these changes in the environment that is detected?
  • An effector
  • An affector
  • A neuron
  • A stimulus
Q.4
Which two human sense organs have receptors specifically sensitive to chemicals?
  • Ears and eyes
  • Eyes and nose
  • Nose and tongue
  • Eyes and skin
Q.5
Sometimes, when people have an accident and break their back they lose the use of their legs. Why does this happen?
  • The part of the brain that controls their legs is damaged
  • They lose the blood supply to their legs
  • The muscles at the top of the legs become disconnected from the backbone
  • The spinal cord is severed and signals from the brain can't reach their legs
Q.6
Nerve cells of the nervous system that are responsible for converting external stimuli from the organism's environment into electrical impulses that can be transmitted to the brain are called what?
  • Sensory neurons
  • Motor neurons
  • Relay neurons
  • Synapses
Q.7
In which section of the brain are voluntary muscle messages processed?
  • Cerebellum
  • Hypothalamus
  • Frontal lobe
  • Medulla
Q.8
Which two organs comprise the central nervous system?
  • Brain and spinal cord
  • Brain and eyes
  • Eyes and spinal cord
  • Skin and bones
Q.9
Your ears contain receptors sensitive to sound. But what other receptors can be found there?
  • Position
  • Light
  • Smell
  • All three of the above
Q.10
Which of the following are effectors?
  • Eyes and ears
  • Teeth
  • Bones and blood
  • Muscles and glands
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