LONGITUDINAL FISSURE is...
a very deep median groove that separates the right and left hemispheres from each other
TRANSVERSE CEREBRAL FISSURE is...
the horizontal separation between the cerebellum and the two cerebral hemispheres
are found in both of the longitudinal and transverse cerebral fissures. They are like enlarged veins and contain venus blood. The CSF in the subarachnoid space is reabsorbed back into the blood at the drual sinuses.
LOBES OF THE CEREBRUM
each cerebral hemisphere is subdivided into FRONTAL, PARIETAL, OCCIPITAL AND TEMPORAL L_ _ _ s.
separates the frontal lobe from the parietla lobe. Runs along the coronal plane.
CEREBRAL CORTEX is..
the superficial gray matter - the surface of the brain.
PRECENTRAL GYRUS is...
also called Primary Motor Cortex - a landbark gyrus just anterior to the central sulcus countless neuron cell bodies, dendrites, and axons form billions of suynapses in these ridges most outgoing motor impulses for voluntary muscle contraction begin here as conscious throught.
POSTCENTRAL GYRUS is...
also called Primary Somatosensory Conrtex... a landmark gyrus just posterior to the central sulcus. * most incoming somatic sensory impulses arrive here.
Somatic sensory info...
is sensory infomatoin coming from skin, muscles and joints.
WERNICKE'S AREA is....
possibly for speech recognition (understanding what words mean and for sounding out unfamiliar words). In most people the left hemisphere is dominant for speech.
BROCA'S AREA is...
for motor speech control (being able to pronounce the word you are thinking). In most people the left hemisphere is dominant for control of motor speech.
PRIMARY AUDITORY CORTEX (AREA)
used for sound/speech
PRIMARY VISUAL CORTEX (AREA)
used for visual images.
receive messages for the sense of small from bipolar neurons in the nasal cavity. Axons travel in each tract to the appropriate part of the cortex.
also known as the 'master gland' and is controlled by the hypothalamus.
appears as a white "arch" on the medial surface of each hemisphere. It consists of many tracts that form the main communication pathway between the two hemispheres. It is a high speed information highway enablling the two hemispheres to "talk to each other." Many nerve impulses travel back and forth between the two hemispheres along the myelinated axons of this "arch" - Larger than the fornix
appears as a smaller verson of the corpus callosum located below it. Functionally, it serves as a communication pathways between the two cerebral hemispheres. Like the corpus callosum, it enables the two hemispheres to "talk to each other."
cavities within the brain where cerebrospinal fluid is produced.
toward the back of the body
the deep cavity visible between the corpus callosum and the fornix. found in each hemisphere of the cerebrum.
the shallow groove around the thalamus. When you put the two hemispheres of the cerebrum together it creates this narrow cavity
the canal that drains fluid from the 3rd ventrical down to the fourth
the fluid filled space just anterior to the cerebellum
Away from the midline of the body
a group of loosely scattered neurons found throughout the core of the brainstem