Nokea
Transmission across a synapse is achieved mainly by a________ .
- A. ionic bonding
- B. diffusion of neurotransmitter across the cleft
- C. physical contact of axon to dendrite allowing the nerve impulse to continue onward
- D. diffusion of sodium ions across the cleft
Correct Answer: B
Rationale: Transmission across a synapse is primarily achieved by the diffusion of neurotransmitter molecules across the synaptic cleft. When an action potential reaches the axon terminal, it triggers the release of neurotransmitters, which diffuse across the cleft and bind to receptors on the postsynaptic neuron. This chemical signaling allows for precise and regulated communication between neurons.
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- A. V-VII
- B. IX-X
- C. VII-XI
- D. III-VI
Correct Answer: B
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- A. Anorexia, nausea, and vomiting
- B. Transient hypertension
- C. Constipation
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Correct Answer: D
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- A. Heart rate of 68 bpm
- B. Respiratory rate of 24
- C. Blood pressure of 106/82 mm Hg
- D. Temperature of 96.8°F (36.0°C)
Correct Answer: C
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