Electric signals are converted into chemicals at the synapse between two neurons so they can easily cross the gap and transport the chemical messenger to the following neuron, where it is changed back into an electrical signal.
The involuntary actions to stimuli are known as reflex actions. They take place without the conscious brain regions being involved. Reflex acts are all automatic behaviours. The brain and spinal cord of the central nervous system are involved in the reflex activity. Alternatively, voluntary actions are those that are controlled by the cerebellum of the brain. …
What is the difference between a reflex action and walking? Read More »
So far, we have been talking about nervous tissue, and how it collects information, sends it around the body, processes information, makes decisions based on information, and conveys decisions to muscles for action. In other words, when the action or movement is to be performed, muscle tissue will do the final job. How do animal …
A delicate organ like the brain, which is so important for a variety of activities, needs to be carefully protected. For this, the body is designed so that the brain sits inside a bony box. Inside the box, the brain is contained in a fluid-filled balloon which provides further shock absorption. If you run your …
‘Reflex’ is a word we use very commonly when we talk about some sudden action in response to something in the environment. We say ‘I jumped out of the way of the bus reflexly’, ‘I pulled my hand back from the flame reflexly’, or ‘I was so hungry my mouth started watering reflexly’. What exactly …
Human Brain Is reflex action the only function of the spinal cord? Not, since we know that we are thinking beings. The spinal cord is made up of nerves that supply information to think about. Thinking involves more complex mechanisms and neural connections. These are concentrated in the brain, which is the main coordinating centre …
Two important uses of washing soda and baking soda:- Washing soda (Na2CO3.10H2O) Baking soda (NaHCO3) (i)It is used as an electrolyte (i)It can be used to test the garden soil for acidity. If bubbles are developed, then the soil is too acidic. (ii) It can be used as a water softener for laundry (ii) If …
Give two important uses of washing soda and baking soda. Read More »
The reaction of the acid with base gives a product of corresponding salt and water, which is considered a neutralisation reaction. e.g. KOH + HCl → KCl + H2O Ca(OH)2 + H2CO3 → CaCO3 + 2H2O
Plaster of Paris ( CaSO4.1/2H2O) should be stored in a moisture-proof container because moisture can affect the Plaster of Paris by slowing down the setting of the plaster because of hydration. As a result, plaster will be ineffective.
(A) He changed the fresh milk’s pH from 6 to slightly alkaline to stop the production of lactic acid, which would otherwise cause the milk to turn sour. (b) Because the pH is initially neutralised by the lactic acid created here before it is reduced to set the milk into curd, this milk takes a …
