Exam 3 Flashcards
Neurolemmocytes in PNS and oligodendroglia in the CNS comprise the
Myelin sheaths
Star shaped neuroglia
Astrocytes
What contains cerebral spinal fluid
Subrarachnoid space, cerebral aqueduct, ventricles
What contains cell bodies of peripheral somatic sensory neurons
Dorsal root ganglia
Collection of neuron cell bodies and synapses lying inside the CNS
Nucleus
Centers in brain that control respiration
Pons and medulla
Coordinates reflexes and movements that serve to maintain posture
Cerebellum
Relay center for both sensory abd motor activities (link between cerebral cortex and lower centers)
Thalamus
Division of nervous system related to stress
Autonomic, sympathetic
The ANS functions to maintain homeostasis. Excitatory activies of sympathetic and inhibitory activities of the parasympathetic
True
Division of nervous system that is associated with everyday regulation of visceral effectors
Autonomic, parasympathetic
What contains peripheral somatic motoneurons
Ventral horn
Parasympathetic
Craniosacral origin
Preganglionic neuron
Conduct impulses to ganglion
Postganglionic neuron
Conduct impulses from ganglion
Sympathetic
Thoracolumbar origin
Sympathetic chain ganglia
Extend from C2 to coccyx vertebrae
Part of neuron that conducts impulses away from soma
Axon
Found in spinal cord
Cell bodies of efferent neurons
Cell bodies of interneurons
Cell bodies of afferent neurons are located
Dorsal root ganglia
Contains cell bodies of peripheral sympathetic autonomic motoneurons
Sympathetic chain ganglia
Sensory neurons of peripheral nervous system are
Pseudounipolar
Which part of spinal cord supplies nerves to shoulder girdles and arms
Cervical
Adult spinal cord extends to which vertebral level
L1 or L2
Most superficial layer of meningeal covering of spinal cord is
Dura mater
Fold of dura mater that projects between cerebral hemispheres in the midsagittal plane
Falx cerebri
Diffusion of cerebral spinal fluid across arachnoid villi returns this fluid to
Venous circulation
Lateral apertures and median aperture provide a passageway for the circulation of cerebral spinal fluid to the
Subarachnoid space
Primary motor and sensory strips of cerebral cortex are separated by the
Central sulcus
The surface of the precenteal gyrus contains the
Primary motor cortex
Sensory and motor regions of the cortex are connected to nearby areas that interpret the incoming data or coordinate the motor response. Those areas are
Association areas
Portions of cerebral cortex are interconnected by
Association fibers
Commissural fibers
Projection fibers
Vagus nerve is number
10
Voluntary motor commands are routed over which pathways
Corticospinal tracts
Preganglionic neurons from T and L segments that synapse with the postganglionic neurons in the paravertebral ganglia are part of which division of the autonomic nervous system
Sympathetic
Cells of CNS are derived from
Ectoderm
Cranial nerves 3, 4, 6 control eye movement which may be tested by having patient look up down, right left and diagonally
True
