explain the functions of human brain?
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The human brain is the command center for the human nervous system. It receives input from the sensory organs and sends output to the muscles. The human brain has the same basic structure as other mammal brains, but is larger in relation to body size than any other brains.
Facts about the human brain
The human brain is the largest brain of all vertebrates relative to body sizeIt weighs about 3.3 lbs. (1.5 kilograms)The brain makes up about 2 percent of a human's body weightThe cerebrum makes up 85 percent of the brain's weightIt contains about 86 billion nerve cells (neurons) — the "gray matter"It contains billions of nerve fibers (axons and dendrites) — the "white matter"These neurons are connected by trillions of connections, or synapses
Anatomy of the human brain
The largest part of the human brain is the cerebrum, which is divided into two hemispheres. Underneath lies the brainstem, and behind that sits the cerebellum. The outermost layer of the cerebrum is the cerebral cortex, which consists of four lobes: the frontal lobe, the parietal lobe, the temporal lobe and the occipital lobe. [Related: Nervous System: Facts, Functions & Diseases]

Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each of these contains fluid-filled cavities called ventricles. The forebrain develops into the cerebrum and underlying structures; the midbrain becomes part of the brainstem; and the hindbrain gives rise to regions of the brainstem and the cerebellum.
The cerebral cortex is greatly enlarged in human brains, and is considered the seat of complex thought. Visual processing takes place in the occipital lobe, near the back of the skull. The temporal lobe processes sound and language, and includes the hippocampus and amygdala, which play roles in memory and emotion, respectively. The parietal lobe integrates input from different senses and is important for spatial orientation and navigation.
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Facts about the human brain
The human brain is the largest brain of all vertebrates relative to body sizeIt weighs about 3.3 lbs. (1.5 kilograms)The brain makes up about 2 percent of a human's body weightThe cerebrum makes up 85 percent of the brain's weightIt contains about 86 billion nerve cells (neurons) — the "gray matter"It contains billions of nerve fibers (axons and dendrites) — the "white matter"These neurons are connected by trillions of connections, or synapses
Anatomy of the human brain
The largest part of the human brain is the cerebrum, which is divided into two hemispheres. Underneath lies the brainstem, and behind that sits the cerebellum. The outermost layer of the cerebrum is the cerebral cortex, which consists of four lobes: the frontal lobe, the parietal lobe, the temporal lobe and the occipital lobe. [Related: Nervous System: Facts, Functions & Diseases]

Like all vertebrate brains, the human brain develops from three sections known as the forebrain, midbrain and hindbrain. Each of these contains fluid-filled cavities called ventricles. The forebrain develops into the cerebrum and underlying structures; the midbrain becomes part of the brainstem; and the hindbrain gives rise to regions of the brainstem and the cerebellum.
The cerebral cortex is greatly enlarged in human brains, and is considered the seat of complex thought. Visual processing takes place in the occipital lobe, near the back of the skull. The temporal lobe processes sound and language, and includes the hippocampus and amygdala, which play roles in memory and emotion, respectively. The parietal lobe integrates input from different senses and is important for spatial orientation and navigation.
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Protected within the skull, the brain is composed of the cerebrum, cerebellum, and brainstem. ... The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body. The central nervous system (CNS) is composed of the brain and spinal cord.
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