Quiz 6 (final) Flashcards
Find in subarachnoid space; clear fluid; carry oxygen and nutrients through the brain; absorbs shock and protects the brain and spinal cord
Cerebrospinal fluid
Makes very strong separation of what’s in the brain from outside of the brain;should keep bacteria out
Blood brain barrier
Water on the brain; damage to the arachnoid mater
Hydrocephalus
Cranial meninges
- Dura mater
- Arachnoid mater
- Pia mater
Blood supply
- Internal carotid arteries
- Vertebral arteries
- Internal jugular veins
Where is CSF made
Lateral ventricals
Flow of CSF
Start in lateral ventricle and ends in SAS
Brain stem (3)
- Midbrain
- Pons
- Medulla oblongata
On/off switch for breathing; connects to cerebellum
Pons
Regulates and directs ascending and descending tracts; cranial nerve originate
Medulla oblongata
Little brain
Cerebellum
Posture, equilibrium, and balance
Cerebellum
Deep in the center midline
Diencephalon
Diencephalon (3)
- Epithalamus
- Thalamus
- Hypothalamus
Pineal gland and emotional response to smell
Epithalamus
Relay, directs all sensory impulses to the cerebral cortex ( pain, touch, and pressure)
Thalamus
Controls and connects to pituitary gland; controls ANS, coordinates between NS and endocrine system, body temp
Hypothalamus
What gland is attached to the hypothalamus
Pituitary gland
Brain represents: (3)
2% total body weight
20% body’s blood supply
20% consummation of the O2 and glucose
Primary somatosensory area is located:
Parietal lobe
Primary motor area is located:
In front edge of frontal lobe
Where pyramids cross in brain stem, in medulla oblongata
Decussation
Controls the rate and rhythm of breathing
Respiratory rhythmic center
A lot of incoming sensory neurons, consciousness, filter out unimportant stuff, in thalamus
Reticular activating system (RAS)
Grooves on the brain (up)
Convolutions/gyri
Grooves on the brain going down deep
Sulcus/fissure
Located behind frontal bone, does executive functions ( self control, planning, and reasoning)
Frontal lobe
Upper sides of skull
Parietal lobe
Lower sides of skull
Temporal lobe
Back of the skull
Occipital lobe
How much of the brain is designated to different areas (little man)
Sensory/motor homunculus map
What connects the hemispheres
Corpus collosum
Gray matter
Outside
White matter
Inside
Help initiate and terminate movements, suppress unwanted movements, and regulates muscle tone
Function of the basal ganglia/nuclei
Neurotransmitter used
Dopamine
Disease it can cause
Parkinson’s
Part of corpus collosum and cerebrum and diencephalon ; runs emotions
Limbic system
Visual area
Occipital lobe
Gustatory area (taste)
Parietal lobe
Auditory area
Superior part of temporal lobe
Olfactory area
Inferomedial part of temporal lobe
Specializes in performing
Hemispheric lateralization
Musical and artistic awareness, spatial and pattern perception, recognition of dances and emotional content of language
Right hemisphere
More in reasoning, numerical and scientific skills, spoken and written languages and ability to understand sign language
Left hemisphere
Electrical activities of the brain
Electroencephalogram EEG
Olfactory
Sense of smell
Optic
Sense of sight
Oculomotor
Eyelid, pupil, and several extra ocular muscles
Facial
Some of taste buds, muscles in lower face
Vestibulocochlear
Hearing and balance
Vagus
Majority of the parasympathetic nervous system
Hypoglossal
Movement of tongue
Inability to move some facial muscles out of nerve 7
Bell’s palsy
What senses coming in your aware of, what muscles you consciously control
Somatic nervous system SNS
Senses perceived
Pain, touch, temp
Unconscious senses
Autonomic nervous system ANS
Senses ANS perceive
Blood pressure, stress on internal organs, co2 detection internally
Divisions of PNS (3)
- Somatic nervous system
- Autonomic nervous system
- Enteric nervous system
Digestive system (stretch receptors in stomach)
Enteric nervous system ENS
Sensory receptors internally in the body
( chemoreceptors that monitor blood co2, electrolytes; mechanoreceptors that detect the degree of stretch in the walls of organs or blood vessels)
Interoceptors
Run from CNS to ganglia
Preganglionic neuron
Run from ganglia to organs
Postganglionic neuron
What parts of the body does the ANS supply
Internal, heart, respiratory, glands in skin
Which cranial nerve carries 80% of parasympathetics
CN10
Part of the brain that controls ANS
Brain stem ( lower part of the brain )
Preganglionics exit in the SNS
T1-L2
Preganglionic exit in PNS
CN10
Location of ganglia in SNS
Away from organ it controls
Location of ganglia in PNS
Right at organ where it controls
Increase activity of ANS (fight or flight)
Sympathetic nerve
Decrease activity of ANS
Parasympathetic nerve
Cardiovascular center is located
Medulla oblongata
Posture, equilibrium, balance
Cerebellum
Respiratory center
Medulla oblongata
Consciousness
RAS
Circadian clock
Hypothalamus
Relays sensory input to cerebral cortex
Thalamus
Emotions
Lymbic system
Hunger, thirst, body temp
Hypothalamus