Chapter 13 spinal stuff
Babinski sign
Stroking an infants foot on the side of the sole produces a fanning of the toes known as the
Spinal meninges
The specialized protective membrane that surrounds the spinal cord is the
Dermatone
The specific bilateral region of the skin surface monitored by a single pair of spinal nerves is known as a
Dermatome
The specific region of the body surface monitored by a single pair of spinal nerves is known as
Descending Tracts
Axons convey motor commands down into the spinal cord by way of
Acquired Reflexes
Complex, learned motor patterns are called
Innate reflexes
Connections that form between neurons during development produce
Gamma efferents
Contraction of the myofibrils within intrafusal muscle occurs when impulses arrive over
Nerve Plexus
A complex interwoven network of nerves is called a
Crpssed extensor reflex
A motor response that occurs on the side opposite the stimulus is referred to as a
Polysynaptic reflex
A reflex arc that has at least one interneuron between the sensory neuron is a
Receptor
A specialized cell that monitors conditions in the body or the external environment is called a
Reinforcement
Elevated facilitation leading to an enhancement of spinal reflexes is called
Ganglia
In the peripheral nervous system (PNS), neuron cell bodies are located in
Reflexes
Programmed, automatic, involuntary motor responses and motor patterns are called
Somatic reflexes
Provide a mechanism for involuntary control of the muscular system
Cranial reflex
Reflexes processed in the brain are called
Gray Comissures
The areas of the spinal cord where axons cross from one side of the cord to the other are the
Pia Mater
The blood vessels servicing the spinal cord run along the surface of the
Dorsal ramus
The branch of each spinal nerve that provides sensory and motor innervation to the skin and muscles of the back is the
Nuclei
The cell bodies of neurons in the gray matter of the spinal cord form groups called
Motor Nuclei
The cell bodies of neurons that receive and relay information from peripheral receptors are called
Sensory nuclei
The cell bodies of neurons that receive and relay information from peripheral receptors are called
Perineurium
The connective tissue partition that separates adjacent bundles of nerve fibers in a peripheral nerve is referred to as the
Cauda Equina
The nerves that collectively radiate from the conus medullaris are known as the
Dura mater
The outermost covering of the spinal cord is the
Epineurium
The outermost layer of a spinal nerve is called the
Brachial plexus
The radial, median, and ulnar nerves originate in the
Filum terminale
The supportive fibrous strand of the pia matter is the
Conus medullaris
The terminal portion of the spinal cord is called the
Columns
The white matter of the spinal cord is divided into regions called
Flexor reflex
The withdrawal reflex affecting the muscles of a limb is a
Convergence
When two neuronal pools synapse on the same motor neurons, the process is called
