Anatomy and Physiology-Brain part functions and hearing parts

cerebrum

controls conscious thought, learning and speech

frontal lobe

regulates decision making and planning

parietal lobe

controls visual-spatial processing and body positioning

occipital lobe

involved in visual memory of objects

temporal lobe

involved in emotional and olfactory memories

cerebellum

maintains posture, balance and movement, coordinates voluntary muscle movements

transverse fissure

divides cerebrum and cerebellum

corpus callosum

bundle of nerves connecting left and right halves of the brain

thalamus

sorts information from the PNS and relays it to the cerebrum

pons

Relays information to and from the medulla oblongata and is involved in controlling the rhythm of breathing,  links the cerebral cortex and cerebellum.

midbrain

controls visual and auditory reflex centers

optic chiasm

receives nerve impulses from the eyes

spinal cord

link between brain and PNS

medulla oblongata

Transmits impulses between the spinal cord and brain, controls vital functions

brain stem

Connects parts of the nervous system, regulate certain visceral activities and does involuntary actions

hypothalamus

site of regulation of water balance and body temperature

diencephalon

Processes sensory information

Auricle

collects sound waves

Tympanic membrane (eardrum) and ossicles

amplifies sound waves to the inner ear

Cochlea: organ of corti

transforms soundwaves into auditory impulse to be received by brain

Cochlea: perilymph

fluid that vibrates basilar membrane, which has tiny receptor cells attach to it

Cochlea: tectorial membrane

when stimulated, it polarizes the ends of nerve cells which creates an action potential

Cochlea: maculae

receptor cells that help maintain static equilibrium. Keeps head upright

Otoliths

Calcium salt gel that signal maculae to tell brain that head is moving through vestibular nerve. Detects linear acceleration and gravity in vestibular system.

Semicircular canals

maintains dynamic equilibrium and balance while moving