BIO 260/BRULTE/MARTININ/CHP 14 SPINAL CORD
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| WHAT ARE THE FX OF THE SPINAL CORD? | 1. HIGHWAY FOR SENSORY/MOTOR COMMAND TO/FROM BRAIN. 2. INTEGRATES & PROCESSES SENSORY 411 ON ITS OWN.
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| THE SPINAL CORD STARTS AT ____ ___ OF SKULL AND ENDS AT ___ VERTEBRA | 1.FORAMEN MAGNUM.2. L1 (LUMBAR)
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| THE DORSAL (BACK/POSTERIOR) SURFACE OF SPINAL CORD HAS A SHALLOW LONGITUDINAL GOOVE OR ____ | POSTERIOR MEDIAN SULCUS
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| THE ANTERIOR MEDIAN FISSURE IS A DEEP CREASE ALONG THE ___ SURFACE | VENTRAL
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| EACH REGION OF THE SPINAL CORD ALONG THE CERVICAL,THROACIC,LUMBAR CONTAIN TRACTS OF THAT SEGMENT AND THOSE ___ TO IT. | INFERIOR
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| SPINAL CORD TRACTS THAT BEGIN AT THE SACRAL REGION ARE THE ___ AND END ___ | 1. NARROWEST 2. SACRAL REGION
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| WHERE ARE INTERNEURONS FOUND ON S.C.? | SEGMENTS OF EXPANDED S.C. CALLED ENLARGEMENTS
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| WHAT IS THE FX OF INTERNEURONS IN S.C.? | RELAY ARRIVING SENSORY 411 AND COORDINATING SOMATIC MOTOR NEURONS CONTROLLING LIMB MUSCLES
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| THE CERVICAL ENLARGEMENT SUPPLIES NERVES TO THE ___ ___ & UPPER ___ | 1. PECTORAL GIRDLE 2. LIMBS
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| THE ___ ENLARGEMENT SUPPLIES NERVES TO PELVIS & LOWER LIMBS | LUMBAR
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| WHERE DOES S.C. TAPER OFF TO FORM WHAT? | INFERIOR TO LUMBAR ENLARGEMENT; TAPERS TO CONICAL TIP CALLED CONUS MEDULLARIS
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| WHAT EXTENDS FROM THE TIP OF THE CONIS MEDULLARIS ALONG THE LENGTH OF VERTEBRAL CANAL AS FAR AS S1 OR S2? | FILUM TERMINALES
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| WHAT IS THE FX OF THE FIBROUS TISSUE OR FILUM TERMINALES? | PROVIDE LONGITUDINAL SUPPORT AS PART OF COCCYGEAL LIGAMENT
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| HOW MANY SEGMENTS IS THE S.C.? | 31
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| EVERY SPINAL SEGMENT HAS A PAIR OF ___ ___ GANGLIA. | DORSAL ROOT (BACK/POSTERIOR)
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| WHERE ARE THE CELL BODIES OF SENSORY NEURONS ON S.C.? | DORSAL ROOT GANGLIA (BACK/POSTERIOR)
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| WHERE ARE THE DORSAL ROOT GANGLIA LOCATED? | LIES BETWEEN THE PEDICLES OF VERTEBRAL COLUMN
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| WHERE ARE THE DORSAL ROOTS? | FOUND ON EITHER SIDE OF SPINAL CORD
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| WHAT ARE THE DORSAL ROOTS? | THEY ARE THE AXONS OF THE SENSORY NEURONS OF DORSAL ROOT GANGLION.
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| ANTERIOR TO DORSAL ROOT,___ ___ LEAVES SPINAL CORD. | VENTRAL ROOT
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| EVERY SPINAL SEGMENT HAS A PAIR OF ___ ___ GANGLIA. | DORSAL ROOT (BACK/POSTERIOR)
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| WHERE ARE THE CELL BODIES OF SENSORY NEURONS ON S.C.? | DORSAL ROOT GANGLIA (BACK/POSTERIOR)
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| WHERE ARE THE DORSAL ROOT GANGLIA LOCATED? | LIES BETWEEN THE PEDICLES OF VERTEBRAL COLUMN
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| WHERE ARE THE DORSAL ROOTS? | FOUND ON EITHER SIDE OF SPINAL CORD
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| WHAT ARE THE DORSAL ROOTS? | THEY ARE THE AXONS OF THE SENSORY NEURONS OF DORSAL ROOT GANGLION.
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| ANTERIOR TO DORSAL ROOT,___ ___ LEAVES SPINAL CORD. | VENTRAL ROOT
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| WHAT DO VENTRAL (FRONT/ANTERIOR) ROOTS CONTAIN? | AXONS OF BOTH SOMATIC AND VISCERAL MOTOR NEURONS THAT CONTROL PERIPHERAL EFECTORS (MUSCLES OR GLANDS)
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| DORSAL (BACK) ROOTS ARE USUALLY ___ THAN VENTRAL (FRONT) ROOTS. | THICKER
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| DORSAL/VENTRAL ROOTS ENTER AND LEAVE VERTEBRAL CANAL THROUGH ___ ___ | INTERVETEBRAL FORAMINA
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| THE DORSAL ROOT GANGLION AND VENTRAL ROOT (FIBERS) COME TOGETHER TO FORM ONE SPINAL NERVE. T OR F | TRUE
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| WHY ARE SPINAL NERVES CALLED MIXED NERVES? | CONTAIN BOTH SENSORY(AFFERENT) AND MOTOR (EFFERENT) FIBERS
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| AFTER AGE 4 THE ___ __ CONTINUES TO GROW BUT THE __ __ DOES NOT. | 1. VERTEBRAL COLUMN 2. SPINAL CORD
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| HOW DO THE DORSAL AND VENTRAL ROOTS ELONGATE after age 4 years old? | the vertebral column keeps growing and carries dorsal root ganglion and spinal nerves farther away
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| By age 4 how is the growth of spinal cord aligned? | segments of s.c. aligned with corresponding vertebrae
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| why is the cauda equina like that of a horse tail? | the long extensions of the filum terminale and dorsal/ventral roots found caudally beyond the L2
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| what separates s.c. from external environment? | vertebral column,surrounding ligaments,tendons,muscles
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| what protects the neural tissue from the bony vertebral canal? | spinal meninges
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| Like CSF in the brain,what is the FX of the spinAL MENINGES? | PROTECT,PHYSICAL STABILITY AND SHOCK ABSORBER
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| WHERE CAN YOU FIND SPINAL MENINGES? | S.C. AND SPINAL NERVES
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| WHERE DO BLOOD VESSELS BRANCH TO SUPPLY O2 AND NUTRIENTS TO S.C. ? | SPINAL MENINGES
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| WHAT ARE THE 3 LAYERS OF SPINAL MENINGES? | 1. DURA MATER 2. ARACHNOID MATER 3. PIA MATER
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| AT THE FORAMEN MAGNUM,THE SPINAL MENINGES CONNECT WITH ___ ___ THAT SURROUNDS BRAIN. | CRANIAL MENINGES
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| WHAT DOES THE OTER DURA MAER OF S.C. MADE OF? | DENSE IRREGULAR C.T. AND OUTER/INNER SURFACE COVERED BY SIMPLE SQUAMOUS EPITHELIUM
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| THE EPUDURAL SPACE OF THE DURA MATER HAS _,_,_ | areolar tissue,blood vessels, adipose tissue
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| WHICH LAYER OF SPINAL MENINGES BLENDS WITH FILUM TERMINALE TO FORM COCCYGEAL LIGAMENT? | DURA MATER
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| THE INNER SURFACE OF THE DURA MATER IS IN CONTACT WITH OUTER SURFACE OF ___ __ | ARACHNOID MATER
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| WHAT IS THE MIDDLE MENINGES OR ARACHNOID LAYER MADE UP OF? | SIMPLE SQUAMOUS EPITHELIUM
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| WHAT SEPARATES THE ARACHNOID MATER FROM THE INNER MOST LAYER (PIA MATER)? | SUBARACHNOID SPACE
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| WHAT DOES THE SUBARACHNOID SPACE CONTAIN? | CSF
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| WHAT IS THE FX OF CSF IN SUBARACHNOID SPACE? | ACTS AS SHOCK ABSORBER AND DIFFUSION MEDIUM FOR GASES,NUTRIENTS,WASTE,NEUROTRANSMITTERS
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| WHAT ARE THE BUNDLES OF FIBERS OF ARACHNOID MATER? | ARACHNOID TRABECULAE
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| WHAT IS INTERWOVEN WITH ARACHNOID TRABECULAE? | ELASTIC AND COLLAGEN FIBERS OF PIA MATER
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| WHERE ARE THE BLOOD VESSELS SUPPLYING S.C FOUND? | PIA MATER
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| what connects the pia mater and spinal arachnoid mater to the dura mater? | paired denticulate ligaments
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| what does the surface of the s.c. have to keep inner pia mater in place? | thin layer of astrocytes and cytoplasmic extensionslock collagen fibers of pia mater
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| WHAT IS THE FX OF THE DENTICULATE LIGAMENTS? | PREVENT SIDE TO SIDE MOVEMENT AND INFERIOR MOVEMENT OF S.C.
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| WHAT PREVENTS SUPERIOR MOVEMENT OF S.C.? | THE FILUM TERMINALE BLENDING INTO COCCYGEAL LIGAMENT
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| THE CENTRAL,MASS OF GRAY MATTER OF SECTIONAL S.C. IS DOMINATED BY __ | CELL BODIES OF NEURONS AND GLIAL CELLS
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| THE OUTER ___ MATTER OF S.C CONTAINS MYELINATED AND UNMYELINATED AXONS ORGANIZED IN TRACTS OR COLUMNS | WHITE MATTER
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