Answer: The correct match for the given organs and function is a s follows-
1) Protects against infection - spleen, lymph nodes
2) Senses stimuli - brain, spinal cord.
Spleen and lymph nodes are the organs of the lymphatic system that help in destroying pathogens ( disease causing organisms) that enter the body of the individual.
Brain and spinal cord are the part of nervous system, which senses the information from environment and interprets it in the form of appropriate response.
Answer: protein ..i hope this helped!
Explanation: protein is a nutrient used to make and repair our body cells like blood and muscle cells.
It marks the start of fall.
Hope this helps!
Plz can u mark me as brainliest?
The normal membrane potential inside the axon of nerve cells is –70mV, and since this potential can change in nerve cells it is called the resting potential. When a stimulus is applied a brief reversal of the membrane potential, lasting about a millisecond, occurs. This brief reversal is called the action potential
<span>A stimulus can cause the membrane potential to change a little. The voltage-gated ion channels can detect this change, and when the potential reaches –30mV the sodium channels open for 0.5ms. The causes sodium ions to rush in, making the inside of the cell more positive. This phase is referred to as a depolarisation since the normal voltage polarity (negative inside) is reversed (becomes positive inside). </span>
<span>Repolarisation. At a certain point, the depolarisation of the membrane causes the sodium channels to close. As a result the potassium channels open for 0.5ms, causing potassium ions to rush out, making the inside more negative again. Since this restores the original polarity, it is called repolarisation. As the polarity becomes restored, there is a slight ‘overshoot’ in the movement of potassium ions (called hyperpolarisation). The resting membrane potential is restored by the Na+K+ATPase pump.</span>