The Brain Part 1 Flashcards
what does the brainstem consist of?
medulla oblongata, pons, and midbrain
what are the meninges?
dura mater(dense), arachnoid(loose network), pia mater
what are the three functions of the cerebrospinal fluid?
provide cushioning to the brain, support to the brain, and chemical balance
what makes cerebrospinal fluid?
choroid plexus
around how much of cerebrospinal fluid is in circulation?
~140ml
where does the CSF circulate?
through ventricles, spinal epidural space, and central canal.
where is CSF located?
subrachnoid space
what (two) sources provide the blood supply to the brain?
internal carotids, and vertebral/basilar arteries
what allows the bllod flow from the brain to the rest of the body?
internal jugular
What is responsible for the infomation bypass/ relay connect brain and spinal cord?
medulla oblongata white matter
What is responsible for ANS reflex control( brathing, blood pressure, and heart rate)?
medulla oblongata gray matter
what part of the brain is responsible for cranial nerve attatchment?
medulla oblongata gray matter
what part is responsible for the relay of somatic sensory to the thalamus?
medulla oblongata gray matter
what part is responsible for the relay of visceral sensory infor?
medulla oblongata gray matter
what responsible for the involuntary control of vommiting, sneezing, coughing, and swallowing?
medulla oblongata gray matter
what links the cerebellum to the rest of the brain?
pons
what is responsible for getting the sensory info to the thalamus, and motor info the to cranial and spinal nerves?
pons white matter
what is responsible for the cranial nerve sensory relay/ motor commands, respiration rate adjustment, and reslay sensory and motor info to cerebellum?
pons gray matter
what connects motor neurons between brain and spinal cord?
mid brain white matter
what in the mid brain transmits sensory info to the thalamus?
white matter(peduncles)
what is responsible for the reflex response to auditory and visual stimuli?
mid brain gray matter
what part of brai contains reticular formation?
mid brain gray matter
MO: Nucleus gracilis and nucleus cuneatus:
somatic sensory relay to thalamus
MO: solitary nucleus
integrates and relays visceral sensory information
MO: cardiac centers
control heart rate and force contraction
MO: vasomotor centers:
regulates distribution of blood flow
MO: Respriatory centers
control breathing
what are the function of the reticular formation?
motor coordination, CV control, pain modulation, sleep/consciousness, habituation
MB: superior colliculi:
visual refleces
MB: inferior colliculi:
auditory reflexes
MB: red nucleus:
fine motor control of upper limb
MB: substania nigra
regulates activity of the basal nuclei
MB: Reticular activating system (RAS):
consiousness
what is responsible for the coordination between brain regions and spinal cord?
cerebellum white matter
what is responsible for balance and posture, as well as involuntary, fine tuning of on going motor movements like walking?
cerebellum gray matter
