Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
1. How does the sympathetic autonomic nervous system react to a stressful situation? Select one.
A. Increases blood-flow to digestive organs B. Reduces respiratory rate C. Increases heart-rate D. Decreases blood-flow to skeletal muscle |
"C. Increases heart-rate
1.1 Central and Peripheral Nervous |
|
|
2. Match each function with the type of cell that performs that function. Select your answer from the pull-down list.
a. Propagates an action potential that will lead to stimulation of a central nervous system interneuron B. Disposes of dead brain cells and bacteria C. Protects and cushions nerve fibers found in the peripheral nervous system D. Protects nerve cells in the peripheral nervous system by producing a myelin sheath E. Propagates an action potential that will lead to stimulation of a skeletal muscle F. Helps to protect neurons from harmful chemicals in the blood 1. Ependymal Cell 2. Satelites Cells 3. Motor (efferent) neuron 4. Microglia 5. Astrocytes 6. Schwann Cells 7. Sensory (afferent) neuron |
A.-7 - Sensory (afferent) Neuron
B.-5 Astrocytes C. -6 Schwann Cells D.- 1 Ependymal Cell E.-5 - Astrocytes F.- 2 - Sateltes Cells. |
|
|
3. Which statement describes how a neuron ensures a normal unidirectional flow of action potential? Select one.
A. Axons carry impulses away from the cell body. B. Synapses carry impulses to the axon hillock. C. Neurofibrils carry impulses through the cell body. D. Dendrites carry impulses away from the cell body. |
A. Axons carry impulses away from the cell body.
1.1 |
|
|
4. List the events that restore membrane charge and ionic concentration following an action potential in order from first (1) to last (5). Select your answer from the pull-down list.
a. Potassium channels begin to open. b. The membrane's potassium permeability increases while sodium permeability decreases. c. The membrane repolarizes with an outflow of positive ions. d. Potassium ions rapidly diffuse out of the neuron into tissue fluid. e. The original extracellular and intracellular concentrations of sodium and potassium ions are reestablished by the sodium-potassium pump. |
1 = C
2 = B 3 = A 4 = D 5 = E |
|
|
5. How does a neurotransmitter conduct the nerve impulse across a synaptic cleft? Select one.
A. It diffuses the impulse into the receiving neuron's nucleus and activates an action potential. B. It opens the Na+ ion-gated channels in the receiving neuron. C. It opens the K+ ion gated channels in the sending neuron. D. It repolarizes the receiving neuron's cell membrane. |
A. It diffuses the impulse into the receiving neuron's nucleus and activates an action potential.
|
|
|
6. Which of the following are parts of a patellar reflex? Choose 3 answers
A. Sensory neuron B. Association neuron C. Quadriceps muscle of thigh D. Cerebral cortex E. Stretch receptor |
A. C. E.
|
|
|
7. Which of the following are structural components of the peripheral nervous system? Choose 3 answers
A. Cranial nerves B. Oligodendrocytes C. Spinal cord D. Spinal nerves E. Sensory fibers |
A. C. D.
|
|
|
8. Match each body part with the corresponding innervating system. Select your answer from the pull-down list.
A. Cardiac muscle B. Gastrocnemius muscle C. Triceps muscle D. Urinary bladder E. Deltoid muscle F. Diaphragm Choice: Autonomic Choice: Somatic |
A. Protection of Neurons.
|
|
|
9. What structural benefit for nerve impulse transmission does the spinal cord provide? Select one.
A. Protection of neurons B. Alkaline control for pH adjustments C. Endocrine control point for nerves D. Signal degradation |
Write Down Paper
|
