Brain and Cranial Nerves Functions

Cerebrum

Processes conscious thoughts and sensations

Longitudinal Fissure

Central Sulcus & Lateral Sulcus

Precentral Gyrus

Contains primary MOTOR cortex

Postcentral Sulcus

Contains primary SENSORY cortex

Frontal Lobe

Controls voluntary skeletal muscle movement, where intelligent thought comes from

Parietal Lobe

Processes general senses

Occipital Lobe

Processes vision

Temporal Lobe

Processes vision and equilibrium

Cerebellum

Monitors and controls proprioception

What is Proprioception?

monitors body in space

(alcohol messes with this)

Olfactory Bulb

Transmit OLFACTORY (smell) info to brain

Olfactory Tract

Transmit OLFACTORY (smell) info to brain

(en route to brain)

Optic Nerve

Transmit VISUAL info to brain

Option Chiasm

Transmit VISUAL info to brain

Corpus Callosum

Allows communication between left and right cerebral hemisphere

Midbrain

Keeps cerebrum in state of wakefulness (RAS), controls visual/auditory reflexes (corpora quadrigemina)

Pons

Has areas that controls respiration

Medulla Oblongata

Contains vital control centers (heart rate, respiratory rate, blood pressure)

Corpora Quadrigemina - Superior Colliculi

In midbrain, visual reflexes

Corpora Quadrigemina - Inferior Colliculi

In midbrain, hearing reflexes

Fornix

Nerve tract for olfaction

Thalamus

Processes and sends sensory info to cerebrum

Relay center for sensation

Hypothalamus

Controls pituitary

Mammillary Body

Feeding and memory center

Pineal Gland/Body

Secretes melatonin, regulates sleep-wake cycle

Pituitary Gland

Secretes lots of hormones

Choroid Plexus

Produces cerebrospinal fluid

Septum Pellucidum

N/A (membrane)

Lateral Ventricle

Chamber containing cerebrospinal fluid (wrapped by septum pellucidum)

Cerebral Aqueduct

Circulates cerebrospinal fluid

Fourth Ventricle

Chamber containing cerebrospinal fluid