About brain

A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells.

Brain

selective focus phot of artificial human skull

medical

human brain figurine

silhouette of man illustration

people

blue

silhouette

Cute baby toddler playing building with learning toy stacking blocks at home. Early age education. Kids hand brain and fine motor skills development. Logic activity for preschoolers.

photography

intelligence

brick

low angle photo of cliff

nature

texture

pattern

brown coral under the body of water with sun streaks in closeup photography

two men wearing blue lab coats

Toddler playing with learning toys at home or kindergarten. Baby sorting organising objects blocks with specific colors. Early age education. Kids hand brain development activity for preschoolers.

brain figurine

low angle photography of drop lights

woman covering her face with white book

book

reading

study

people in white shirt holding clear drinking glasses

health

operating theatre

healthcare

Cute baby toddler playing with learning toy pyramid stacking blocks at home or kindergarten. Early age education. Kids hand brain fun development activity for preschoolers.

sliced vegetables

orange heart decor

white and blue square illustration

yellow

yellow background

puzzle