Karteikarten
Fundamentals of the Nervous System
Karten in diesem Stapel (48)
- 1Nervous System is divided structurally into...CNS and PNS
- 2Nervous System is divided functionally into...SNS and ANS
- 3Central Nervous Systembrain and spinal cord
- 4Peripheral Nervous Systemnerve fibers and their nerve cell bodies that reside outside the CNS
CN I-XII and 31 spinal nerves - 5What is the functional unit of the nervous system?Neurons
- 6What are neurons composed of?cell body, dendrites, and axons
- 7Neuronal axons (nerve fibers)transmit impulses to other neurons or to a target organ or muscle
- 8Sensory Nervestransmit impulses to the CNS from peripheral sensory organs
- 9Nucleuscollection of nerve cell bodies in CNS
- 10Ganglionnerve cell body aggregation in the PNS
- 11Tractbundle of nerve fibers that connect the nuclei in CNS
- 12Nervebundle of nerve fibers, the connective tissue holding it together, and blood vessels
- 13Cranial Nervesnerves exiting the cranium
- 14Spinal Nervesnerves exiting the vertebral column
- 15Nervous tissues consists of 2 types of cellsneurons (nerve cells) and neuroglia (glia cells)
- 16What 3 layers make up the meninges/spinal cord?pia mater, arachnoid mater, dura mater
- 17Pia materinnermost meningeal layer, delicate, transparent covering
- 18Where is the cerebrospinal fluid located?Subdural space.
between the pia mater and arachnoid mater - 19Dura Materthick tough layer external to pia and arachnoid mater
- 20What separates the dura mater from vertebral column?The fat filled epidural space
- 21Peripheral Nervous System Functionnerve fibers and cell bodies outside the CNS
conduct impulses to/away from CNS - 22Central Nervous System Functionbrain and spinal cord.
integrate and coordinate incoming/outgoing neural signals,
carry out higher mental functions - 23Nerve Fiber consists of...axon, neurolemma,and surrounding endoneurial connective tissue
- 24NeurolemmaSchwann Cells surrounding axon
(myelinated or unmyelinated) - 25Nerve fibers are supported and protected by...Endoneurium, Perineurium, and Epineurium
- 26PNS consists of what 2 nerve fibers?afferent and efferent fibers
- 27Afferent fiberssensory
convey neural impulses to CNS from sense organs - 28Efferent Fibersmotor
convey neural impulses from CNS to effector muscles - 29Cranial NervesCN I-XII
exit the cranium foramina - 30Spinal Nerves31 pairs
(plus spinal root XI)
exit the vertebral column thru intervertebral foramina - 31Spinal Level vs Vertebral Levelcord vs bone
- 32Where do spinal nerves originally arise from?nerve rootlets
- 33Rootlets converge into 2 nerve roots...Anterior (ventral) nerve root
Posterior (dorsal) nerve root - 34Anterior Nerve Rootsmotor (efferent) fibers
nerve cell bodies in anterior horn of gray matter to effector organs - 35Posterior Nerve Rootssensory (afferent) fibers
from cell bodies in spinal or posterior root ganglion extending peripherally to sensory endings and centrally to posterior horn of gray matter - 36What forms when posterior and anterior nerve roots unite?Spinal nerve
- 37What happens after the spinal nerve forms from the posterior and anterior nerve roots?divides into posterior and anterior rami
- 38Dermatomeunilateral area of skin innervated by sensory fibers of single spinal nerve
- 39Myotomeunilateral muscle innervated by single spinal nerve
- 40Posterior (primary) rami of spinal nervessupply synovial joints, deep muscles of back, and overlying skin in segmental pattern
(NO PLEXUSES) - 41Anterior (primary) rami of spinal nervessupply anterior/lateral areas of trunk, UEs, LEs.
Can form into somatic nerve PLEXUSES creating multisegmental peripheral nerves - 42Somatic Fiberssomatosensory fibers and somatic motor fibers
- 43Somatosensory Fiberstransmit sensation from body to CNS
exteroceptive or proprioceptive senstaions - 44Somatic Motortransmit impulses to skeletal muscles
- 45Visceral Fibersvisceral sensory fibers and visceral motor fibers
- 46Visceral sensory fiberssmallest component
transmit pain or subconscious visceral reflex sensations
Ex. stretch and distention and nonlocalized abd pain - 47Visceral Motor Fibersimpulses to smooth muscle and glandular tissues
presynaptic and postsynaptic - 48Somatic Nervous System
Informationen
- Beschreibung
- CHAPTER 1 OF MOORE CLINICALLY ORIENTED ANATOMY
- Erstellt von
- Britney Matthews
- Aufrufe
- 61
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