Chapter 11
No description yet. This curated deck is ready for daily study.
Card preview (24)
Which of the following influences the speed of an action potential
Both the presence of myelin sheath and the diameter of Axon
Which of the following statements correctly characterize an action potential
Action potentials are initiated by depolarization of the membrane to threshold
Which of the following cell types makes up the majority of cells in the nervous system
Neuroglial cells
What do multiple sclerosis and ALS have in common
They both damage the myelin sheath, slowing action potential transmission.
All of the following are directly involved in synaptic transmission except
Voltage sensitive ion channels in the post synaptic membrane.
An _______ neurotransmitter causes _______ of the post synaptic membrane.
Both b and c
Information coming into the central nervous system arrives via ________ while information going from the central nervous system to the muscles glands and organs travel via ________
Sensory neurons Motor neurons
The brain and spinal cord make up the
Central nervous system
A spinal reflects requires the participation of each of the following except
Cerebral cortex
Which of the following would cause an acceleration of heart rate and increase in blood pressure and a slowing of digestive processes
Sympathetic division of the autonomic nervous system
Which part of the brain is responsible for regulating the heart and respiratory rates and blood pressure
Medulla oblongata
The coordination necessary for musicians to play the piano depends on control exerted by the
Cerebellum
All the following are associated with storage of long-term memory except
Limbic system
Which of the following is characteristic of psycho active drugs
The altar levels of neurotransmitters
Which of the following statements regarding infections of the nervous system is accurate
Bacterial meningitis is generally more severe than viral meningitis
Which of the following ions are directly involved in the generation of an action potential
Sodium ions and potassium ions
An action potential will be generated when the sum of all graded potentials reaches
Threshold
The action of neurotransmitters is very fleeting due to their prompt removal from the synthetic cleft all of the following are strategies for rapid removal of neurotransmitters except
Rapid uptake of the neurotransmitter by the postsynaptic neuron
Short-term memory occurs in
The limbic system
Excitatory neurotransmitters ______
Result in depolarization of the postsynaptic membrane
What event at the axon terminal’s is stimulated by the action potential
The release of a no transmitter in the synapse
Which neuroglial cells form the myelin sheath on axon in the CNS and are attacked and lost in the disease multiple sclerosis
Oligodendrocytes
Which of these statements concerning psychoactive drugs is false
Psychoactive drugs cannot cross the blood brain barrier
Central nervous system _____
Receives processes and stores information