The Human

Brain

THE FUNCTIONS OF THE BRAIN

THE FUNCTIONS OF THE BRAIN

• The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell.

THE FUNCTIONS OF THE BRAIN

• The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell.

• It controls our body, receives information, analyzes information, and stores information (our memories).

THE FUNCTIONS OF THE BRAIN

• The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell.

• It controls our body, receives information, analyzes information, and stores information (our memories).

• The brain produces electrical signals, which, together with chemical reactions, lets the parts of the body communicate.

THE FUNCTIONS OF THE BRAIN

• The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell.

• It controls our body, receives information, analyzes information, and stores information (our memories).

• The brain produces electrical signals, which, together with chemical reactions, lets the parts of the body communicate.

• Nerves send these signals throughout the body.

THE FUNCTIONS OF THE BRAIN

• there are 100,000 miles of blood vessels in the brain

THE FUNCTIONS OF THE BRAIN

• there are 100,000 miles of blood vessels in the brain

• the brain can live for 4-6 minutes w/o oxygen, 5-10 minutes there is permanent damage

SIZE OF THE HUMAN BRAIN

• The average human brain weighs about 3 pounds.

• At birth, the human brain weighs less than a pound.

• The human brain reaches its full size at about 6 years of age.

• Humans have the largest brain to body size.

Parts of the Brain

Parts of the Brain

Parts of the Brain

• The cerebrum is the largest part of the brain.

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes• frontal lobe: deals with reasoning, movement,

parts of speech, emotions

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes• frontal lobe: deals with reasoning, movement,

parts of speech, emotions• parietal lobe: movement, perception of

stimuli, recognition

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes• frontal lobe: deals with reasoning, movement,

parts of speech, emotions• parietal lobe: movement, perception of

stimuli, recognition• occipital lobe: visual processing

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes• frontal lobe: deals with reasoning, movement, parts

of speech, emotions• parietal lobe: movement, perception of stimuli,

recognition• occipital lobe: visual processing• temporal lobe: memory, speech

Parts of the Brain

• The cerebrum is the largest part of the brain.• Divided into 4 parts called lobes• frontal lobe: deals with reasoning, movement, parts

of speech, emotions• parietal lobe: movement, perception of stimuli,

recognition• occipital lobe: visual processing• temporal lobe: memory, speech

Parts of the Brain

• The cerebellum lie below the cerebrum.

Parts of the Brain

• The cerebellum lie below the cerebrum.-coordinates the skeletal muscles-helps keep balance

Parts of the Brain

• The brain stem connects to the spinal cord.

Parts of the Brain

• The brain stem connects to the spinal cord.- controls the breathing

Parts of the Brain

• The brain stem connects to the spinal cord.- controls the breathing-blood pressure and heart beat

Parts of the Brain

• The brain stem connects to the spinal cord.- controls the breathing- blood pressure and heart beat- muscles in the digestive system