Canvas Quiz 6

• Cranial nerves can have which of the following functions?

  • Sensory
  • Autonomic
  • Motor
• The anterior horns of the spinal cord contain cell bodies of _____________.

  Somatic motor neurons
• What is the function of the nodes of ranvier?

  • They produce a faster nerve impulse through saltatory conduction
• Which of the following is a characteristic of the parasympathetic division of the nervous system?

  Long preganglionic fibers
• Which of the following is caused by the sympathetic division of the nervous system?


  Acceleration of the heart
• Functions of cerebrospinal fluid

  • Provides buoyancy for the brain
  • Protects the peripheral nervous system from trauma
  • Transports nutrients and removes waste from the brain
  • Forms a liquid cushion around the brain
• Which cranial nerves carry somatic motor information only?

  Hypoglossal (CN XII) and trochler (CN IV)
• Which of the following nerves is NOT a part of the brachial plexus?

  phrenic nerve
• Another term for motor is efferent
• Which of the meninges of the brain is most superficial?

  Dura mater
• Which of the following would be a motor signal?

  • Turning your head to look over your shoulder
  • Pressing the brake at a stop sign
  • Turning the steering wheel
• Which of the following branches does the autonomic system fall under?

  • Motor
  • Peripheral
• Special characteristics of neurons

  • Long-lived
  • High metabolic rate
  • non-mitotic
  • Excitable
• Which of the following cranial nerves is involved in the movement of the eyeballs?

  Trochlear nerves
• Another term for sensory is afferent.
• General functions of the nervous system

  • Collecting information from the internal and external environment
  • Initiating responses in the body
  • Processing and evaluating information
• Which of the following cranial nerves is involved in the control of speech?

  Hypoglossal nerves
• Glial cells differ from neurons in that they _____________.

  are smaller and capable of mitosis
• Which of the following lists the components of a reflex arc in the correct order?

  Sensory receptor, sensory neuron, interneuron, motor neuron, effector.
• The _____________ of the brain is continuous with the spinal cord.

  Medulla oblongata
• Which of the following would be a sensory signal?

  • Feeling a steering wheel
  • Seeing a stop sign
  • Feeling the air conditioning
  • Hearing a siren
• Shallow grooves found throughout the cerebrum are called _____________.

  Sulci
• The region of a neuron where the axon connects to the cell body is called the _____________.

  Axon hillock
• Olfactory and gustatory stimuli are both detected by which type of sensory receptors?

  Chemoreceptors
• The synapses in the nervous system are _____________.

  chemical
• _____________ are short processes that receive signals and transfer them to the cell body.

  Dendrites
• Cranial nerve functions

  • Sensory
  • Motor
  • Autonomic
• Which of the following are parasympathetic responses?

  • Increased digestion
  • Pupil constriction
  • Salvation
  • Decreased heart rate
  • Bronchoconstriction
• The posterior ramus of a typical spinal nerve innervates the _____________.

  Deep muscles and skin of the back
• The thin strand of pia mater that helps to anchor the spinal cord to the coccyx is called the _____________.

  Filum terminale
• Which branch of the nervous system contains cranial nerves?

  • Peripheral
• Gray matter of the spinal cord is divided into _____________.

  Horns