Chapter 10 Test Review Flashcards
A cluster of sensory neuron cell bodies
Posterior root ganglion
A simple fast, predictable automatic response to help protect the body
Reflex arc
Bones of the spine that enclose and protect the spinal cord
Vertebrae
In a reflex arc, the muscle or gland that responds with an action
Effector
A group of lumbar, sacral, and coccygeal nerves that branch off the lower end of the spinal cord
Cauda equina
The innermost layer of the meninges that is attached to the brain and spinal cord
Pia mater
Structure that responds to some environmental change and initiates a sensory impulse
Receptor
Opening that runs lengthwise through the spinal cord; CSF circulates through it
Central canal
Lymphatic fluid-filled space between the arachnoid and dura mater
Subdural space
Reflex arc structure that transmits the impulse to a muscle or gland
Motor neuron
Matter within the spinal cord shaped like the letter “H”
Gray matter
Fat filled space between the vertebrae and dura mater
Epidural space
Reflex structure that passes the impulse from the receptor to the CNS
Sensory neuron
Part of a spinal nerve containing sensory nerve fibers that carry impulses toward the spinal cord
Posterior root
Part of a spinal nerve containing motor neurons carrying impulses away from the spinal cord
Anterior root
Tough outermost layer of the meninges
Dura mater
Space between the arachnoid and Pia mater contains CSF
Subarachnoid space
Filament that anchors the inferior portion of the spinal cord
Filum terminale
Region in the CNS that connects the sensory and motor portions of the reflex arc
Integrating center
Cone-shaped tip of the spinal cord
Conus medullaris
Three connective tissue membranes covering the brain and spinal cord
Meninges
Tracts of white matter that run up and down the spinal cord
Columns
Cobweb-like middle layer of the meninges
Arachnoid
Area in the pre-central gyrus of the frontal lobe, controls specific muscles or groups of muscles
Primary motor
Area in the occipital lobe, permits vision
Primary visual
Area in the temporal lobe, permits hearing
Primary auditory
Cerebral area that controls smell
Primary olfactory
Area in the frontal lobe, translates thoughts into speech
Motor speech
Post central gyrus area, receives sensations of pain, touch, pressure and temperature
Primary somatosensory
Cerebral area that integrates general and special sensations to form a common thought
Common integrative
The color of cerebrospinal fluid
Colorless and clear
The entire nervous system contains between 1/3-2/3 cup of CSF or about ___ mL
80-150mL
List functions of cerebrospinal fluid
Contains nutrients, serves as shock absorber, contains white blood cells to fight infection
Cranial Nerve X: main nerve of parasympathetic nervous system; senses and controls internal organs
Vagus
Cranial Nerve I: sense of smell
Olfactory
Cranial Nerve XII: propioception and tongue movement
Hypoglossal
Cranial Nerve IX: swallowing taste; sensation from tongue
Glossopharyneal
Cranial Nerve V: chewing, facial sensation
Trigeminal
Cranial Nerve VI: propioception and eyeball movement
Abducens
Cranial Nerve VII: taste and facial
Facial
Cranial Nerve III: control of the eyes lens and pupil
Oculomotor
Cranial Nerve VIII: hearing and equilibrium
Vestibulocochlear
Cranial Nerve IV: proprioception and eyeball movement
Trochlear
Cranial Nerve II: vision
Optic
Cranial Nerve XI: swallowing, head and shoulder movement
Accessory
Relative to the human brain, the sheep brain is (larger, smaller)
Smaller
Relative to the human brain, the sheep brain olfactory bulbs are (larger, smaller)
Larger
Relative to the human brain, the sheep brain cerebrum (larger, smaller)
Smaller
CSF is formed by ___ and secretion from blood in capillaries called ___; cells that form it are know as ___
Filtrations
Choroid plexus
Epemdymnal cells
Type of impulse relayed and interpreted by the thalamus
Sensory
List functions of the limbus system
Basic emotions
Condition that result from and excessive accumulation of CSF within the ventricles
Hydrocephalus
Type of reflexes that the corpora quadrigemina is concerned with
Visual and auditory
At rest, the brain consumes about ___ percent of the body total oxygen
20%
The structure that acts as a bridge connecting the spinal cord and medulla to upper portions of the brain
Pons
The medulla serves as a conduction pathway for all ascending and descending tracts. What type of impulses are transmitted by its white matter?
Motor and sensory
Brain center that regulates the heart and diameter of blood vessels
Cardiovascular
Movements of your left hand are initiated by motor neurons that originate in the ___ side of your cerebrum
Right
Brain cavities where cerebrospinal fluid circulates
Ventricles
Band of white matter that connects the two halves of the cerebrum
Corpus callosum
The part of your brain stimulated by your ringing alarm clock
Reticular activating system
The outer layer of the cerebrum
Cortex
Part of the brain that coordinates walking balance, and the ability to speak understandably
Cerebellum
The outer layer of the cerebrum is composed of ___ matter
Gray
Ridges that make up the surface of the cerebrum
Gyri
Name functions of the hypothalamus
Olfactory relay, control of body temperature, tell your body when it is thirsty/hungers, behavioral patterns