six major regions of the brain Flashcards
the central nervous system is made up of
brain and spinal cord
functions of the central nervous system
integrates and coordinates input and output
it receives sensory information and initiates motor control
six major regions of the brain
cerebrum cerebellum diencephalon midbrain pons medulla oblongata
largest region of the brain
cerebrum
cerebrum is divided into paired ______________ by
cerebral hemispheres , longitudinal fissure
cerebrum communicate via the
corpus callosam
what is the gyri and sulci of the neural cortex?
gyri - elevations on the surface of the cerebrum
sulci- depressions on the surface of the cerebrum
function of gyri and sulci of neural cortex ?
increase surface area, increase number of corticol neurons
the cerebrum is divided into lobes:
frontal lobe
temporal lobe
parietal lobe
occipital lobe
function of the frontal lobe
primary motor area and conscious thought
function of the temporal lobe
primary auditory, smell and speech area
function of the parietal lobe
primary somatosensory and taste area
function of the occipital lobe
primary visual area
primary motor area- voluntary control of ___________
skeletal muscle
primary somatosensory are - sensory information from _________ and _______
skeletal muscle and skin
processing centres- perform ___________________
higher-level analytical functions including Wernicke’s and Broca’s area both involved in speech
what is contralateral control?
the major cortex of each cerebral hemisphere is mainly responsible for control of movement of the opposite side of the body
right side of the brain- left side of the body
left side of the brain- right side of the body
processing centres are integrative areas, usually in ______________
dominant hemisphere (left)
Wernicke’s area is also known as the
general interpretive area
the function of Wernicke’s area?
it integrates sensory information to form visual and auditory memory
the speech center is also known as the ____?
broca’s area
the function of Broca’s area
regulates breathing and vocalization, the motor skill needed for speaking
stroke is also known as
cerebrovascular accident
what is cerebrovascular accident
it is also known as stroke which is a sudden death of brain cells and tissues
how stoke/ cerebrovascular accident (CVA) arises
due to the lack of oxygen when the blood flow to the brain is lost by blockage (ischemic) or rupture of an artery to the brain (hemorrhagic)
what is aphasia
language disorder that affects the ability to communicate
aphasia does not impair the person’s intelligence
aphasia is common in
dominant hemisphere stroke (left)
what is Wernicke’s aphasia?
ability to grasp the meaning of spoken words is chiefly impaired. it is commonly associated with dominant temporal lobe CVA
What is Broca’s aphasia
individual with broca’s aphasia have trouble speaking fluently but their comprehension can be relatively preserved. It is associated with frontal lobe/ motor disorders
diencephalon includes
hypothalamus, thalamus, and pineal gland
what is the function of hypothalamus?
regulates hunger, sleep, thirst , body temperature and water balance
controls the pituitary glands; serves as a link between the nervous and endocrine system
the function of the thalamus
receives all sensory input except the sense of smell and sends it to the the appropriate areas of the cerebrum
function of the cerebellum?
receives and integrate sensory input from the eyes, ears and muscles about the current position of the body- adjusts postural muscles to maintain balance.
function of the midbrain?
relay station between the cerebrum and the spinal cord or cerebellum
has reflex centers for visual, auditory and tactile
function of the pons?
communicates between the cerebellum and the rest of the CNS
medulla oblongata contain __________________
reflex centres for regulating heartbeat, breathing, and vasoconstriction (blood pressure)
central canal of the spinal cord is a narrow passage containing
cereborospinal fluid
what are the 5 protections of the CNS
- scalp
- bones
- meninges
- cerebral spinal fluid
- blood brain barrier