Nervous Flashcards
What makes up the central nervous system?
Brain and spinal cord
nerve fibers and cell bodies outside CNS
that conduct impulses toward or away from the CNS.
Peripheral nervous system
What makes up a nerve?
Bundle of nerve fibers
What covers a nerve?
Endoneurium, perineurium, epineurium
collecFon of cell bodies outside the CNS
Ganglion
What are afferent fibers?
Sensory- distal to proximal (touch table- sense to brain)
What are efferent fibers?
Motor (proximal to distal)- brain sends signal to touch
Cranial nerves exit the cranial cavity through __ in the cranium
Foramina
Spinal nerves=
Segmental nerves
Spinal nerves exit the vertebral column through __, and contain motor and sensory fibers
Intervertebral foramina
Motor fibers
Ventral roof
Sensory fibers
Dorsal root
Autonomic nervous system has
Sympathetic and parasympathetic
Consists of motor fibers (visceral efferent) that stimulate smooth (involuntary) muscle;
modified cardiac muscle, and glandular muscle—not under conscious control.
Autonomic system
craniosacral
Parasympathetic
thoracolumbar
Sympathetic
catabolic; energy-expending (“fight of flight”)
Sympathetic
homeostatic or anabolic; energy- conserving (“rest and digest”)
Parasympathetic
transmits the sensation for touch, pain, temperature, and position from
sensory receptors.
Somatic sensory
innervates only skeletal muscle (voluntary and reflexive movement)
Somatic motor
Why as pts do we need to know about the nervous system?
Nerves are in control of all the systems in our body, various restrictions and compressions can inh’ibit functioning and increase pain. We can help aid in neural reeducation, neuromobilization, and desensitization
Strip of skim (1 nerve root)
Dermatome
Patch of skin (1 nerve)
Peripheral nerve
