Calcium Potassium
Sodium Magnesium Phosphorus Chloride
Answer:
Sensory neurons.
Explanation:
The sensory neurons are the active neurons that is responsible for the sensing of any activity occur on the skin. This sensory neuron send messages to the central nervous system in order to get instructions for the muscles to do suitable actions. The motor neuron send messages from central nervous system to the muscles. The burning of feet sense by sensory neurons present in the feet so avoiding such burning, the individual makes a decision of going into the ocean fastly.
The conducting system of the heart consists of cardiac muscle cells and conducting fibers (not nervous tissue) that are specialized for initiating impulses and conducting them rapidly through the heart (see the image below). They initiate the normal cardiac cycle and coordinate the contractions of cardiac chambers. Both atria contract together, as do the ventricles, but atrial contraction occurs first.
The conducting system provides the heart its automatic rhythmic beat. For the heart to pump efficiently and the systemic and pulmonary circulations to operate in synchrony, the events in the cardiac cycle must be coordinated.
For A.) When there is an injury, the blood platelets start to accumulate around the open wound to begin clotting and prevent bleeding.
Explanation: If you have a wound on the skin, then white blood cells immediately go to the wound to heal the wound, so that you don't bleed.
For B.) The blanket brain sends signals to reinforce the clotting process until blood loss from the injury is stopped completely.
Explanation: The brain helps send signals to the white blood cells to notify them to try to stop the bleeding.
