Nervous System II Flashcards
(150 cards)
protective covering & related brain structures: arachnoid granulations
fingerlike structures that project from the subarachnoid space into the blood-filled dural sinuses, SITE OF PRODUCTION OF CEREBROSPINAL FLUID
protective covering & related brain structures: arachnoid mater
thin netlike layer located between dura mater & pia mater
protective covering & related brain structures: bone
skull
protective covering & related brain structures: dural (sagittal) sinus
areas where the two layeres of the dura mater split forming channels; venous blood travels through these channels as it returns from the brain to vessels leading to the heart
protective covering & related brain structures: dura mater
tough superficial white fibrous connective tissue covering the brain spinal cord that is attached internally to the cranium and separated from the vertebral column by the epidural space
protective covering & related brain structures: epidural space
space that lies between the dura mater and the bony vertebral column and contains blood vessels, loose connective tissue, and fat tissue
protective covering & related brain structures: falx cerebelli
partition of the dura mater that separates the right & left cerebellar hemispheres
protective covering & related brain structures: falx cerebri
partition of the dura mater that extends inferiorly into the longitudinal fissure & separates the right & left cerebral hemispheres
protective covering & related brain structures: gray matter
region of CNS that lacks myelin and therefore looks gray, inside white matter
protective covering & related brain structures: meninges
membranes which enclose the brain & spinal cord- dura mater, arachnoid mater, pia mater
protective covering & related brain structures: pia mater
thin deepest meningeal layer composed of connective tissue that contains many blood vessels that aid in nourishing the underlying brain and spinal cord as it follows all the sulci & gyri
protective covering & related brain structures: subarachnoid space
real space formed by thin connective tissue strands that extend between the arachnoid mater and the pia mater that contains cerebrospinal fluid, SITE OF PRODUCTION OF CSF
protective covering & related brain structures: subdural space
potential space between the dura mater and the arachnoid mater
protective covering & related brain structures: superior sagittal sinus
same as dural sinus
protective covering & related brain structures: tentorium cerebelli
partition of dura mater that separates occipital lobes of the cerebrum from the cerebellum
protective covering & related brain structures: white matter
Outside of gray matter, covered in myelin
site of production of cerebrospinal fluid
manufactured in specialized blood capillaries derived from pia mater, called choroid plexuses; most cerebrospinal fluid is made in choroid plexus of the lateral ventricle
site of production of cerebrospinal fluid: cerebral aqueduct (aqueduct of sylvius)
narrow canal connects 4th ventrile to the 3rd ventricle and passes lengthwise through the brainstem
site of production of cerebrospinal fluid: choroid plexus
tiny, reddish cauliflower like masses of specialized capillaries from the pia mater that secret CSF (cerebrospinal fluid)
site of production of cerebrospinal fluid: fourth ventricle
in the brain stemp, anterior to the cerebellum.
site of production of cerebrospinal fluid: intervertebral foramina
openings at the anterior end of the ventricle that communicates with lateral ventricles.
site of production of cerebrospinal fluid: lateral ventricles
largest ventricles - 1st is in left cerebral hemisphere, 2nd is in right cerebral hemisphere
site of production of cerebrospinal fluid: third ventricle
narrow space in the midline of the brain betweent he corpus callosum (a bridge of axons that link the two cerebral hemispheres)
ascending tracts & functions: fasciculus gracilis and cuneatus
In posterior funiculi of the spinal cord, conduct sensory impulses from the skin, muscles, tendons, and joints to the brain, where they are interpreted as sensations of touch, pressure, and body movement.