A-- Spinal Nerves
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| central part of cell where nucleus is found | cell body
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| usually multiple and short, carry impluses toward cell bodies. | dendrite
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| single process, usu. long, carries impulses away from cell body | axons
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| CNS | made up of brain and spinal cord
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| PNS | spinal nerves, cranial nerves, and associated ganglia.
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| Controls voluntary activities, skeletal muscles | Somatic nervous system
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| Controls involuntary activities, smooth and cardiac muscles, glands | Autonomic nervous system
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| How many pairs of spinal nerves are there? | 31
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| How many pairs of cervical spinal nerves are there? | 8
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| ulnar and median nerves both are in what plexus? What do they do? | supply muscles of forams and hiands. supply skin of thumbs
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| Where does the spinal nerve C1 exit the vertebral column? | Exits between the occipital bone and C1.
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| How are the spinal nerves from T1 down named? | Named according to the vertebrae located above them.
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| Where would the spinal nerve L4 exit? | between L4 and L5
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| Spinal nerves are formed by the union of what two things? | ventral and dorsal root
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| Ventral root consist of what type of nerve fibers and which direction to they carry impulses? | Motor or efferent fibers, carry impulses away from CNS
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| Dorsal root consists of what type of fiber and what direction do they carry impulses? | sensory or afferent fibers, carry impulses toward CNS.
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| The radial nerves are in what plexus? They supply what? | Thumb, and posterior muscles or arms and skin of forearms and hands....triceps???
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| Which nerves are segmented? | thoracic nerves
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| Cervical plexus is formed by the ventral rami of which nerves? | C1-C5
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| Bracial plexus is formed by which ventral rami? | C5-T1
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| Lumbar plexus is make up of which ventral rami? | T12-L4
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| Sacral plexus is made up of which ventral rami? | L4-S5
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| Area of skin innervated by the sensory fibers of a given spinal nerve? | Dermatomes
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| Responsible reception, integration, and transmission of nerve impulses. | neuron
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| Responsible for supporting and protecting neurons. | neuroglial cells
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| What is the longerst nerve in the body? Does it extend for L3, L4, and L5? True or False | Sciatic: True
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| The Sciatic nerves do not supply muscles to the skin of thigh, legs, and feet. True or False | False
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| Femoral nerves supply impulses to muscles to anterior thigh and sensory impuleses from the skin of thighs and legs | True
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| above the knee is the leg | false
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| the orbitor nerves supply motor impulses to what part of the body | thigh
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