how does the brain act as controlling unit
Answers
Explanation:
The brain begins to develop very early, starting in the third week of pregnancy, and continues the processes to create cell material throughout a lifetime.
At birth, the human brain has tens of billions of neurons. By age 6, the brain is 90 percent developed. Numbers increase to more than 100 billion neurons into adulthood. Neurons are the brain's messengers, transporting signals to trigger functions within the brain and throughout the entire body.
"The brain is the control center of the body," said Dr. Jennifer Rubin, neurologist and associate professor of pediatrics at the Ann & Robert H. Lurie Children's Hospital of Chicago.
"The largest part of the brain, called the cerebral cortex, performs voluntary actions that you control, like speaking or picking up an object. The back part of the brain, called the brain stem, controls automatic or involuntary actions, like your eyes moving together or your heart beating."
Neurons send and receive messages using electrical and chemical signals. Generally, they have a plantlike design -- the cell has a single stemlike appendage called an axon that sends messages and branches called dendrites that receive messages.
Synapses are neuron cell connectors that aid in message transmission. The body has more than 100 trillion synapses to facilitate neuron-to-neuron communication.
There are neurons designed for specific functions, Rubin explained.
"Sensory neurons send information from the body about the senses, like taste, temperature and vibration, toward the brain. Motor neurons send information away from the brain to the muscles of the body in order to make them move. Interneurons are the connections between the motor and sensory neurons in the brain."
Motor neurons have a protective coating called a myelin sheath. Damage from illness or injury can slow and interrupt movement. Rubin's work involves providing care for patients with multiple sclerosis, an illness that impacts the myelin sheath. HOPE ITS HELP U ❤
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Answer:
The various activities are taken place with controller the brain .
There are many activities such digestion , ingestion , respiration , cell division , breathing , tissues formation etc .
They are divided into voluntry actions and involuntary actions .
The Brain have neurons which are contacted to all receptors of various body parts .
As this information along pass to the brain .
Brain controls all involantary actions such as beating of heart and digestion etc and voluntary action such as breathing etc .
Brain also controls the glands which secret various hormones .