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WorksheetsAnatomy Chpt 11 part 3
Total questions: 27
Worksheet time: 17mins
Within the white matter of the spinal cord are bundles of axons that serve as the routes of communication to and from the brain. what are these called
Spinal tracts
decussion
fascicles
nerves
group of spinal tracts associated with balance and muscle tone
extrapyramidal tracts
pyramidal
spinothalamic
spinocerebellar
Spinal tract that is responsible for fine movements of hands, fingers, feet, and toes on the opposite side of the body
extrapyramidal
Corticospinal (pyramidal)
spinocerebellar
dorsal
Nerve fibers that are gathered together in bundles
fascicles
mixed nerves
motor nerves
sensory
How many cervical nerves are located in the spine C1-C8
10
5
8
2
How many thoracic nerves are located in the spine. T1-T12
8
5
12
10
How many Lumbar nerves are in the spine L1-L5
10
12
5
2
How many sacral nerves are in the spine S1-S5
5
10
12
6
Term that is referred to when most of the spinal cord tracts cross from one side of the body to the other in the brainstem. Sensory signal from the right side of the body are sent to the left side of the brain.
mixed nerves
decussation
spinal atract
.nerve impulse
Spinal nerves are part of the Peripheral nervous system (PNS)
true
false
Term the refers to bundle of neurons that transmits impulses between the brain and spinal cord and the rest of the body
spinal tract
nerve
fascicle
axon
contains both sensory and motor fibers. can transmit signals in two directions
Mixed Nerves
Nerves that contain only sensory (afferant) fibers such as optic nerve
sensory nerves
contain only motor (efferent) fibers and carry messages to muscles and glands
motorNerves
Nerve networks that formed by subdividing of the branches of each spinal nerve
Meninges
sciatic
plexus
femoral
nerves that supply the muscles, skin of neck, tops of the shoulders, and part of the head. where the phrenic nerve is located
cervical plexus
innervates the lower part of the shoulder and the arm. (axillary, radial, ulner, radial, and median nerve)
brachial plexus
Nerve fibers of the first four lumbar vertebrae, supplies thigh and leg. femoral nerve
Lumbar plexus
formed from nerves L4, L5, and S1- S4. contains sciatic nerve
Sacral plexus
Specific area of skin innervated by a spinal nerve
axillary
sacral
dermatome
paraplegia
Involves the contraction of a skeletal muscle after being simulated by a somatic motor neuron.
Somatic reflex
afferent reflex
efferent reflex
sensory reflex
A deep groove that divides the cerebrum into right and left cerebral hemispheres.
corpus callosum
longitudinal fissure
diencephalon
hypothalamus
The largest portion of the brain
cerebrum
corpus callosum
cerebellum
brainstem
Surface of brain marked by thick ridges called
sulci
cerebellum
gyri
fissures
The shallow grooves along the surface of the brain are called
fissures
gyri
sulci
diencephalon
Second largest region of the brain, contains the most neurons out os all the rest of the brain
Cerebellum
cerebrum
diencephalon
corpus callosum
part of the brain that consists of Midbrain, Pons, and Medulla oblongata
corpus callosum
cerebellum
brain stem
cerebrum
Part of the brain that sits between the cerebrum and the midbrain
cerebellum
diencephalon
brainstem
corpus callosum
different than the spinal cord, this forms on the surface of the brain consisting of cell bodies and interneurons covers the cerebrum and cerebellum in a layer called the cortex
white matter
gray matter
Underneath the cortex this contains bundles of axons that connect one part of the brain to another
gray matter
white matter
The bundle of nerves that connects the brain's two hemispheres is the
Corpus Callosum
longitudinal fissure
cerebellum
sulci
Dorsal (posterior) nerve root
carries sensory information into the spinal cord
Ventral (anterior) Nerve root
carries motor information out of the spinal cord
Spinal Nerve
Single nerve resulting from fusion of dorsal and ventral nerve roots.
