Midterm Review Flashcards
receive information and transfer it to the cell body
Dendrites
he message sending component of the nerve cell.
Axons
is the space between axon of one neuron and the dendrite of the next neuron
Synapse
What does the synapse allow
allows for communication between different parts of the NS.
are chemicals that transmit information across the synapse
Neurotransmitters
medications for CNS pathologies act by…?
facilitating or inhibiting neurotransmitter activity
s a lipid/protein that encases and insulates the axon, increasing speed of impulse conduction.
Myelin
Larger nerves c milenation have…
fastest transmission
composed of axons that carry information away from cell bodies, found in the brain and spinal cord posterior Horn.
White matter
an area that contains a large number of cell bodies and dendrites, covers the entire surface of the cerebrum (cerebral cortex) *anterior horn
Grey matter
Information is conveyed by white matter and is processed and integrated by grey matter.
Information is conveyed by white matter and is processed and integrated by grey matter.
The brain is made up of..
cerebrum, cerebellum, and brainstem
responsible for contralateral voluntary control of extremity and facial movements
Cerebrum
primary motor
Frontal in Cerebrum
primary sensory
Parietal
primary auditory
Temporal
primary vision
Occipital
coordinator Controls balance and muscular movements,
Cerebellum
houses reflex centers for visual, auditory, and tactile responses
Brain stem Midbrain
functions with the medulla to regulate the breathing rate; contains reflex centers that assist with orientation of the head in response to visual and auditory stimulation
Pons
Control centers for heart and respiration rates; reflex centers for vomiting, sneezing, and swallowing
Medulla
Two primary functions of the spinal cord
Coordination of motor information and movement patterns, and Communication of sensory information
extends vertically throughout the length of the brain stem, maintains and adjusts level of arousal
Reticular activating system
Provide feedback to CNS about muscle length
Muscle Spindles
Names the 12 Cranial Nerves
Olfactory Optic- Oculomotor- Trochlear- Trigeminal- Abducens Facial Vestibulocochlear- Glossopharyngeal- Vagus- Spinal Accessory- Hypoglossal- T
Olfactory
smell
Optic
Vision
Oculomotor
pupil constriction and dilation, eye movement.
Trochlear
eye movement, looking down and looking toward midline.
Trigeminal
- Muscles for chewing, sense of pain/touch for head/face.
Abducens
- Eye movement away from midline (eye rolling)
.
Facial
facial expression muscles, and taste in 2/3rds of the tongue
Vestibulocochlear
- hearing and balance.
Glossopharyngeal
taste in the back portion of the tongue, swallowing muscles.
Vagus
Very important role in the body, controls sensory and motor functions in the heart and glands, as well as, takes part in digestion.
Spinal Accessory
Trapezius and SCM to control the head movement.