Your Amazing Brain:

The Inside Tour

Did You Know…?Your brain contains 100 billion neurons and 60

trillion synapses (cortex)

Did You Know…?Your brain contains 100 billion neurons and 60

trillion synapses (cortex)The average adult brain weighs about 1.4 kg (3

lbs)

Did You Know…?Your brain contains 100 billion neurons and 60

trillion synapses (cortex)The average adult brain weighs about 1.4 kg (3

lbs)Your brain makes up about 2% of body weight yet

takes 20% of the body’s blood supply

Did You Know…?Your brain contains 100 billion neurons and 60

trillion synapses (cortex)The average adult brain weighs about 1.4 kg (3

lbs)Your brain makes up about 2% of body weight yet

takes 20% of the body’s blood supply Brain does not fully mature until age 25-30 years

The Key Players:Frontal Lobe:reasoning, judgment,higher order thinking(NOT fully developed until 25-30 yrs)

Temporal Lobe:hearing, speech

Parietal Lobe: pain, pressure, touch, speech

Occipital Lobe: vision

The Major Parts:

cerebrum

skull

meninges (3 layers)

spinal cord

thalamuscorpus

collosum

medulla oblongata

pituitary glandcerebellum

ponshypothalamus

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Collosum

Thalamus

Hypothalamus

Pituitary Gland

Pons

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus

Hypothalamus

Pituitary Gland

Pons

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus Sends information to cortex about sensation, spatial awareness, sleep-wake cycles and consciousness

Hypothalamus

Pituitary Gland

Pons

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus Sends information to cortex about sensation, spatial awareness, sleep-wake cycles and consciousness

Hypothalamus Controls pituitary gland, controls body temperature, thirst, hunger

Pituitary Gland

Pons

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus Sends information to cortex about sensation, spatial awareness, sleep-wake cycles and consciousness

Hypothalamus Controls pituitary gland, controls body temperature, thirst, hunger

Pituitary Gland Secretes hormones that control the entire bodyA.K.A: The Master Gland

Pons

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus Sends information to cortex about sensation, spatial awareness, sleep-wake cycles and consciousness

Hypothalamus Controls pituitary gland, controls body temperature, thirst, hunger

Pituitary Gland Secretes hormones that control the entire bodyA.K.A: The Master Gland

Pons Communicates between cortex and cerebellum, contains many cranial nerves that control face

Medulla Oblongata

What the Parts Do:Parts FunctionsCerebrum(cortex)

Voluntary activities, motor control, speech, vision, thinking, pain

Corpus Callosum

Connects right and left hemispheres of cortex

Thalamus Sends information to cortex about sensation, spatial awareness, sleep-wake cycles and consciousness

Hypothalamus Controls pituitary gland, controls body temperature, thirst, hunger

Pituitary Gland Secretes hormones that control the entire bodyA.K.A: The Master Gland

Pons Communicates between cortex and cerebellum, contains many cranial nerves that control face

Medulla Oblongata

Controls functions vital to life such as breathing and heartbeat

The Inside View:

What the Parts Do Continued:Parts FunctionsCerebellum Balance and movement co-ordination

Meninges

Skull (cranium)

Cranial nerves

What the Parts Do Continued:Parts FunctionsCerebellum Balance and movement co-ordination

Meninges Protection of the brain3 layers (dura, arachnoid, pia)Cerebrospinal fluid in between dura and arachnoid)

Skull (cranium)

Cranial nerves

What the Parts Do Continued:Parts FunctionsCerebellum Balance and movement co-ordination

Meninges Protection of the brain3 layers (dura, arachnoid, pia)Cerebrospinal fluid in between dura and arachnoid)

Skull (cranium) Protection and support of brain

Cranial nerves

What the Parts Do Continued:Parts FunctionsCerebellum Balance and movement co-ordination

Meninges Protection of the brain3 layers (dura, arachnoid, pia)Cerebrospinal fluid in between dura and arachnoid)

Skull (cranium) Protection and support of brain

Cranial nerves Bundles of nerves that exit from base of brain12 cranial nervesControl of facial muscles, tongue, hearing, vision, smellVagus nerve controls viscera (some internal organs)

The View from Below:

Optic chiasma

The Brain’s Blood Supply:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

When Things Go Wrong:

The End!