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BIO 260/ CHP 14
BIO 260/BRULTE/MARTININ/CHP 14 SPINAL CORD
| Question | Answer |
|---|---|
| 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. |
| THE SPINAL CORD STARTS AT ____ ___ OF SKULL AND ENDS AT ___ VERTEBRA | 1.FORAMEN MAGNUM.2. L1 (LUMBAR) |
| THE DORSAL (BACK/POSTERIOR) SURFACE OF SPINAL CORD HAS A SHALLOW LONGITUDINAL GOOVE OR ____ | POSTERIOR MEDIAN SULCUS |
| THE ANTERIOR MEDIAN FISSURE IS A DEEP CREASE ALONG THE ___ SURFACE | VENTRAL |
| EACH REGION OF THE SPINAL CORD ALONG THE CERVICAL,THROACIC,LUMBAR CONTAIN TRACTS OF THAT SEGMENT AND THOSE ___ TO IT. | INFERIOR |
| SPINAL CORD TRACTS THAT BEGIN AT THE SACRAL REGION ARE THE ___ AND END ___ | 1. NARROWEST 2. SACRAL REGION |
| WHERE ARE INTERNEURONS FOUND ON S.C.? | SEGMENTS OF EXPANDED S.C. CALLED ENLARGEMENTS |
| WHAT IS THE FX OF INTERNEURONS IN S.C.? | RELAY ARRIVING SENSORY 411 AND COORDINATING SOMATIC MOTOR NEURONS CONTROLLING LIMB MUSCLES |
| THE CERVICAL ENLARGEMENT SUPPLIES NERVES TO THE ___ ___ & UPPER ___ | 1. PECTORAL GIRDLE 2. LIMBS |
| THE ___ ENLARGEMENT SUPPLIES NERVES TO PELVIS & LOWER LIMBS | LUMBAR |
| WHERE DOES S.C. TAPER OFF TO FORM WHAT? | INFERIOR TO LUMBAR ENLARGEMENT; TAPERS TO CONICAL TIP CALLED CONUS MEDULLARIS |
| WHAT EXTENDS FROM THE TIP OF THE CONIS MEDULLARIS ALONG THE LENGTH OF VERTEBRAL CANAL AS FAR AS S1 OR S2? | FILUM TERMINALES |
| WHAT IS THE FX OF THE FIBROUS TISSUE OR FILUM TERMINALES? | PROVIDE LONGITUDINAL SUPPORT AS PART OF COCCYGEAL LIGAMENT |
| HOW MANY SEGMENTS IS THE S.C.? | 31 |
| EVERY SPINAL SEGMENT HAS A PAIR OF ___ ___ GANGLIA. | DORSAL ROOT (BACK/POSTERIOR) |
| WHERE ARE THE CELL BODIES OF SENSORY NEURONS ON S.C.? | DORSAL ROOT GANGLIA (BACK/POSTERIOR) |
| WHERE ARE THE DORSAL ROOT GANGLIA LOCATED? | LIES BETWEEN THE PEDICLES OF VERTEBRAL COLUMN |
| WHERE ARE THE DORSAL ROOTS? | FOUND ON EITHER SIDE OF SPINAL CORD |
| WHAT ARE THE DORSAL ROOTS? | THEY ARE THE AXONS OF THE SENSORY NEURONS OF DORSAL ROOT GANGLION. |
| ANTERIOR TO DORSAL ROOT,___ ___ LEAVES SPINAL CORD. | VENTRAL ROOT |
| EVERY SPINAL SEGMENT HAS A PAIR OF ___ ___ GANGLIA. | DORSAL ROOT (BACK/POSTERIOR) |
| WHERE ARE THE CELL BODIES OF SENSORY NEURONS ON S.C.? | DORSAL ROOT GANGLIA (BACK/POSTERIOR) |
| WHERE ARE THE DORSAL ROOT GANGLIA LOCATED? | LIES BETWEEN THE PEDICLES OF VERTEBRAL COLUMN |
| WHERE ARE THE DORSAL ROOTS? | FOUND ON EITHER SIDE OF SPINAL CORD |
| WHAT ARE THE DORSAL ROOTS? | THEY ARE THE AXONS OF THE SENSORY NEURONS OF DORSAL ROOT GANGLION. |
| ANTERIOR TO DORSAL ROOT,___ ___ LEAVES SPINAL CORD. | VENTRAL ROOT |
| WHAT DO VENTRAL (FRONT/ANTERIOR) ROOTS CONTAIN? | AXONS OF BOTH SOMATIC AND VISCERAL MOTOR NEURONS THAT CONTROL PERIPHERAL EFECTORS (MUSCLES OR GLANDS) |
| DORSAL (BACK) ROOTS ARE USUALLY ___ THAN VENTRAL (FRONT) ROOTS. | THICKER |
| DORSAL/VENTRAL ROOTS ENTER AND LEAVE VERTEBRAL CANAL THROUGH ___ ___ | INTERVETEBRAL FORAMINA |
| THE DORSAL ROOT GANGLION AND VENTRAL ROOT (FIBERS) COME TOGETHER TO FORM ONE SPINAL NERVE. T OR F | TRUE |
| WHY ARE SPINAL NERVES CALLED MIXED NERVES? | CONTAIN BOTH SENSORY(AFFERENT) AND MOTOR (EFFERENT) FIBERS |
| AFTER AGE 4 THE ___ __ CONTINUES TO GROW BUT THE __ __ DOES NOT. | 1. VERTEBRAL COLUMN 2. SPINAL CORD |
| 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 |
| By age 4 how is the growth of spinal cord aligned? | segments of s.c. aligned with corresponding vertebrae |
| 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 |
| what separates s.c. from external environment? | vertebral column,surrounding ligaments,tendons,muscles |
| what protects the neural tissue from the bony vertebral canal? | spinal meninges |
| Like CSF in the brain,what is the FX of the spinAL MENINGES? | PROTECT,PHYSICAL STABILITY AND SHOCK ABSORBER |
| WHERE CAN YOU FIND SPINAL MENINGES? | S.C. AND SPINAL NERVES |
| WHERE DO BLOOD VESSELS BRANCH TO SUPPLY O2 AND NUTRIENTS TO S.C. ? | SPINAL MENINGES |
| WHAT ARE THE 3 LAYERS OF SPINAL MENINGES? | 1. DURA MATER 2. ARACHNOID MATER 3. PIA MATER |
| AT THE FORAMEN MAGNUM,THE SPINAL MENINGES CONNECT WITH ___ ___ THAT SURROUNDS BRAIN. | CRANIAL MENINGES |
| WHAT DOES THE OTER DURA MAER OF S.C. MADE OF? | DENSE IRREGULAR C.T. AND OUTER/INNER SURFACE COVERED BY SIMPLE SQUAMOUS EPITHELIUM |
| THE EPUDURAL SPACE OF THE DURA MATER HAS _,_,_ | areolar tissue,blood vessels, adipose tissue |
| WHICH LAYER OF SPINAL MENINGES BLENDS WITH FILUM TERMINALE TO FORM COCCYGEAL LIGAMENT? | DURA MATER |
| THE INNER SURFACE OF THE DURA MATER IS IN CONTACT WITH OUTER SURFACE OF ___ __ | ARACHNOID MATER |
| WHAT IS THE MIDDLE MENINGES OR ARACHNOID LAYER MADE UP OF? | SIMPLE SQUAMOUS EPITHELIUM |
| WHAT SEPARATES THE ARACHNOID MATER FROM THE INNER MOST LAYER (PIA MATER)? | SUBARACHNOID SPACE |
| WHAT DOES THE SUBARACHNOID SPACE CONTAIN? | CSF |
| WHAT IS THE FX OF CSF IN SUBARACHNOID SPACE? | ACTS AS SHOCK ABSORBER AND DIFFUSION MEDIUM FOR GASES,NUTRIENTS,WASTE,NEUROTRANSMITTERS |
| WHAT ARE THE BUNDLES OF FIBERS OF ARACHNOID MATER? | ARACHNOID TRABECULAE |
| WHAT IS INTERWOVEN WITH ARACHNOID TRABECULAE? | ELASTIC AND COLLAGEN FIBERS OF PIA MATER |
| WHERE ARE THE BLOOD VESSELS SUPPLYING S.C FOUND? | PIA MATER |
| what connects the pia mater and spinal arachnoid mater to the dura mater? | paired denticulate ligaments |
| 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 |
| WHAT IS THE FX OF THE DENTICULATE LIGAMENTS? | PREVENT SIDE TO SIDE MOVEMENT AND INFERIOR MOVEMENT OF S.C. |
| WHAT PREVENTS SUPERIOR MOVEMENT OF S.C.? | THE FILUM TERMINALE BLENDING INTO COCCYGEAL LIGAMENT |
| THE CENTRAL,MASS OF GRAY MATTER OF SECTIONAL S.C. IS DOMINATED BY __ | CELL BODIES OF NEURONS AND GLIAL CELLS |
| THE OUTER ___ MATTER OF S.C CONTAINS MYELINATED AND UNMYELINATED AXONS ORGANIZED IN TRACTS OR COLUMNS | WHITE MATTER |
Created by:
mich826
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