Which one of the following statements is correct about the nervous system?
A. It takes air into and out of the body to supply oxygen and remove carbon dioxide.
B. It uses blood vessels to transport blood around the body through the heart.
C. It receives and processes sensory information from internal and external parts of the body.
D. It consists of cells that produce and secrete chemicals into the bloodstream via a duct.
What is the best justification for the role of voltage-gated ion channels in nerve impulse transmission?
A. They actively respond to membrane potential changes, leading to depolarization.
B. They block the ions movement across the membrane to sustain the neuron.
C. They produce energy when the sodium ions move to the inside of the axon.
D. They allow potassium ions to diffuse to the inside of the axon, forming repolarization.
Answer (2)
The correct statement about the nervous system is that it receives and processes sensory information from internal and external parts of the body. Voltage-gated ion channels play a crucial role in nerve impulse transmission by responding to membrane potential changes, leading to depolarization. This mechanism is essential for the rapid communication of signals within the nervous system.
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The nervous system receives and processes information from the body and environment. Voltage-gated ion channels are crucial for nerve impulses as they respond to changes in membrane potential, causing depolarization. This mechanism is essential for the proper functioning of neuron communication. ;
