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Which of the following correctly describes how nerve impulses move throughout the body?
A. electrical transmission through neurons and electrical transmission between neurons
B. Chemical transmission through neurons and chemical transmission between neurons
C. Chemical transmission through neurons and electrical transmission between neurons
D. electrical transmission between neurons and chemical transmission between neurons

A man wakes from sleep, hears a strange noise, becomes alarmed, and runs downstairs. Which of the following describes the corresponding events taking place in his nervous system?
A. sensory neurons > spinal cord > brain > motor neurons
B. sensory neurons > brain > spinal cord > motor neurons
C. motor neurons > brain > spinal cord > sensory neurons
D. motor neurons > spinal cord > brain > sensory neurons

Which of the following sets of terms could be used in a description of the peripheral nervous system?
A. Motor neurons and sensory neurons
B. Brain and spinal cord
C. Motor neurons and brain
D. Sensory neurons and spinal cord

I think its D, A, A but I'm not 100% sure. If someone could please check over my answers that would be awesome :)

Respuesta :

Erudite1
The correct options are as follows:
1. ELECTRICAL TRANSMISSION THROUGH NEURONS AND CHEMICAL TRANSMISSION BETWEEN NEURONS [D].
Neurons, which are the nerve cells that carry nerve impulses are made up of cell body and dendrites. Electrical events propagate signals within a neuron and chemical processes transmit the signals from one neuron to the other.
2. SENSORY NEURON - BRAIN - SPINAL CORD - MOTOR NEURONS [B].
Waking up from sleep involves sensory neurons. Hearing of a strange sound is made possible by the activity of the brain. The man become alarm as a result of the message to the body from the brain via the spinal cord and running  involves motor neurons.
3. MOTOR NEURONS AND SENSORY NEURONS [A].
The peripheral nervous system is one of the two components of the nervous system and is made up of the nerves and the ganglia outside the brain and the spinal cord. The neurons of the peripheral nervous system is made up of sensory and motor neurons. The sensory neurons bring signals to the central nervous system while the motor neurons carry signals out of the central nervous system.

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