questions

• a drug causes an increase in the release of an excitatory transmitter substance, it will therefore

  increase stimulation of postsynaptic membrane
• the function of enzymes in the synaptic cleft is to ensure

  neurotransmitters are destroyed
• in a reflex arc the

  effector is stimulated before the brain
• which of the following would be contained within the central nervous system (CNS)

  a neuron connecting the sensory and motor neuron
• the central nervous system (CNS) includes the

  brain and spinal cord
• the somatic nervous system controls the

  skeletal muscles
• the body's response to immediate danger includes

  increased nervous stimulation of the adrenal medulla
• two functions of the medulla oblongata are to control

  heart beat and breathing rate
• the optical lobe of the cerebral cortex has association areas for

  vision
• oxygen and carbon dioxide diffuse cross the membranes between capillaries and alveoli by

  diffusion
• at a synapse the neurotransmitters move to the receptor sites by

  diffusion
• the speed of nerve impulse conduction is increased by the presence of

  myelin
• a person recovering for an head injury finds that she has difficulty maintaining balance what part of the brain has been injured?

  Cerebellum
• sensory receptors initiate nerve impluses in

  long dendrites
• due to a head injury a patients ability to breathe has been impaired where has the damage likely taken place

  the medulla oblongata
• in which lobe of the brain are sensory areas for hearing and smelling locates

  temporal
• neurons which carry nerve impulses towards the nervous system are called

  sensory neurons
• voluntary muscle control originates in the

  cerebral cortex
• damage to the optical lobe could affect

  sight
• the level of CO2 in the blood is monitored by the

  medulla oblongata
• damage to the medulla oblongata may result in

  breathing difficulty
• which of the following explains why most organs are supplied by two separate autonomic nerves

  one stimulates the organ and one inhibits it
• which of the following inhibits the contraction of muscles which move food through the digestive system

  sympathetic nervous system
• depolarization of an axon results from the movement of

  sodium ions
• in a reflex arc the nerve impulse is initiated by

  a sensory receptor
• the sympathetic nervous system is responsible for

  increasing blood glucose levels
• damage to corpus callosum could

  inhibit the sharing of information between cerebral hemispheres
• the vocal cords are found in which structure?

  larynx
• internal respiration is defined as?

  exchange of gases between blood and tissues
• oxygen-poor blood becomes oxygen-rich blood at the?

  alveoli
• which describes the function of the nodes of ranvier?

  speed the transmission of nerve impulses
• a nerve to the heart is severed, resulting in a decreased heart rate. the severed nerve was likely a

  sympathetic nerve