Question

How are messages carried throughout the human body from the brain to the nervous system? 

      A. Active transport  B. Chemical channels  C. Electrical signals  D. Magnetic synapses ​

Answer 1

Answer:

C)

Explanation:

Your nervous system contains millions of nerve cells (Neurons), which are specialised to transmit messages from one part of your body to another one. The neurons carry messages in the form of electrical signals called nerve impulses.

For that reason, the correct response is letter C)

Answer 2

Answer:

The correct answer is – electrical signal. The messages in our body that need to be sent from the brain to the different parts of the nervous system are carried by the electrical signals.

Explanation:

The signal or messages transfer in our body according to the voltage gradient created by the different ions present inside and outside of the cell.  The sensory organs receive the messages through the sensory nerve to the central nervous system. The motor nerve transfers this message to the effector organ by creating the electrical gradient.  

Further explanation:

The nerve impulse is the form of the electrical signal caused by the changes in the voltage inside and outside of the axons.  

The speed of the nerve impulse is fast and can go up to the speed  of 250mph. The conduction speed can be increased by increasing the diameter of the axon and increasing the temperature.  

The important ions that are involved in changing the electrical gradient of the cell is sodium, potassium, calcium and chlorine.

During the transmission of nerve impulse, the cell changes from its resting membrane potential to the depolarization of the cell . The sodium ions enter in the cell for the depolarization of the cell. The potassium ions are responsible for maintaining resting membrane potential of around -50 to + 70 mV depending on the type of the cell. Hence, the change in the electrical potential of the cell helps in the transmission of the nerve impulse from the brain to the nervous system.

Learn more:  

1. Nerve impulse https://brainly.com/question/11882843 ( answer by AL2006 Ace).

2. Electrical impulse https://brainly.in/question/2260933 ( answer by Chetnachaudhary).

Keywords

Electrical impulse, nerve impulse, electric potential, ions, potential, permeability and central nervous system.