Ch16 Brain And Cranial Nerves

Provide protection, physical stability, and shock absorption Dura matter – tough fibrous out most layer Arachnoid matter - Middle layer contains a sub arachnoid space Pia mater- Innermost layer surrounding vertebral body

Located posterior function: muscle memory and coordination Contains the arborvitae

It borders the cerebral cortex and diencephalon Function is emotional state and memory

Contains the thalamus and hypothalamus also the penial gland that secretes melatonin.

Located in Diencephalon Connection between spinal cord/brainstem and the cerebrum Function sensory data besides olfactory

Inside diencephalon Right above the brainstem In charge of maintaining homeostasis a stable internal environment, behavior and hormones release By controlling the pituitary gland (master gland)

Located on the brainstem above the pons Function visual and auditory data primitive processing for survival Contains corpora quadrigemina *Superior and inferior colliculi

Bump located on the brain stem Connects to cerebellum Function Relay station to thalamus and cerebellum. Regulates motility in visceral organs and helps coordinate movement of skeleton

Located at the base of the brainstem connected to the spinal cord. Function relay station of Info going to and coming from higher regions of the brain. Regulates blood pressure, digestion and cardiovascular control center.

Location entire top of brain Grows much faster and begins to fold into two hemispheres right and left. Corpus callosum- allows two hemispheres to relay info back and fourth makes humans different from other animals, allows us to reason, speak and think. cerebral cortex- lining of gray matter Gyri - peaks sulci - valleys contains frontal lobe- decision maker and processor motor functions. occipital lobe’s - sight parietal lobe - sensation cold hot touch pain somata sensory temporal lobe - sounds and hearing

The production and circulation of cerebrospinal fluid Ventricles are lined with ependymal cells most cells maintain CSF some areas of ependymal cells are called choroid plexus and they produce new CSF in every ventricle Pink paint on model

C shaped one in each hemisphere connected to the third ventricle by the inter-ventricle foramen

Donut shaped marrow cavity that runs along the midline of the dienCephalon

Superior to the fourth ventricle third and fourth ventricle communicate through the cerebral aqueduct

Located between Cerebellum and brainstem shaped like a tent CSF fluid leaves through the fourth ventricle into arachnoid space through 4th ventricle

Telencephalon

Fissure- large gap Sulcus- small valley Gyrus- mountain

Primary motor cortex motor output voluntary generated process before leaving brain

Primary sensory cortex somatic senses pain temperature touch pressure Itch

Group of cell bodies helps with relay and connection

Superior and inferior colliculi Visual and auditory processing

Found deep in cerebrum In charge of taste

Ventricles are aligned with ependymal cells most of cells maintain cerebrospinal fluid some areas of a ependymal cells are called choroid plexus and produce new CSF

Hormones secretes hormones to pituitary gland master gland