When a section of the resting neuron is stimulated:
a. sodium ions rush into the cell
b. sodium ions rush out of the cell
c. the interior of the cell becomes slightly positive
d. both A and C above
d. both A and C above
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Match the following cavities and organs:
A) Thoracic B) Abdominopelvic C) Cranial 1) Stomach 2) Heart 3) Uterus 4) Brain 5) Lungs
Which cells recognize and destroy tumors in a non-specific fashion, without requiring prior exposure to antigens?
A. Plasma cells B. Natural killer cells C. Macrophages D. Dendrocytes E. B cells
Neuron X makes inhibitory axon-axonal synaptic contact with neuron Y at the synapse of Y and neuron Z. Which will occur when action potentials are stimulated in neuron X?
A. The synapse between neurons Y and Z will be changed from an excitatory synapse to an inhibitory one. B. Neuron Y will be inhibited from reaching the threshold to fire an action potential. C. Neurons Y and Z will both be less likely to reach threshold and fire an action potential. D. The release of neurotransmitter by neuron Y will be inhibited. E. Neurons Y and Z will both be more likely to reach threshold and fire an action potential.
Antibodies bind to antigens to destroy them.
Answer the following statement true (T) or false (F)