Everything Flashcards
Three functions of the nervous system?
Monitoring the bodys internal and external environmens
Integrating sensory information
Coordinating voluntary and involantury responses of other organs
What is the central nervous system (CNS)?
Brain and spinal court
What is the peripheral nervous system?
Nervous system outside the CNS
Which two divisions do we have in the PNS? And what do they do?
Afferent division brings information to the CNS
Efferent division carries motor commands
Put these words in the correct order:
Pinch
Efferent system
Skeletal muscle
CNS
Afferent system
Somatic sensory
Pinch
Somatic sensory
Afferent system
CNS
Efferent system
Somatic nerve system
Skeletal muscle
What does the autonomic nerve system activates
Parasympathetic division
Sympathic division
Smooth muscle
Cardiac muscle
Glands
Adipose tissue
What does the visceral sensory recept?
Monitoring internal conditions and the status of other organs
What is the way of transporting information in a neuroncel?
Information comes in the cel thru the dendrites
Then thru the cell body
Along the axon
Thru the axon terminals
Thru the synapses
What is myoline?
electrical isolation around the nerve axon. It jumps over from myoline to myoline, because of this the electric potential goes faster
What is the synaps?
Is the end of an axon. It communicates with an other cell. It exchanges information by neurotransmitters. This al happens at the end of the axon terminal
What does the Neuroglia do?
Support neurons for faster impulses, protection and provide proper environment
What is the meninges?
And what is the anatomy?
Three layer membrane that protects the brain and spinal cord
Dura mater - Tough outer layer against the cranium
Arachnoidea - Smooth layer directly attached to the dura mater, sends spiderlike connection to the pia mater
Subarachnoid - fills up the space with cerebral spinal fluid inside of the spiderlike connection
Pia mater - delicate, highly vascularized inner layer
What is the function of meninges?
Shock absorption
Removal of waste products
Provision of certain nutrients (ions, vitamin c)
What is Cerebrospinal fluid?
Fluid in and around the brain and spinal (and ventrikels) that acts as shock absorber, transport nutrients, oxygen, neurotransmitters.
What is the blood-brain-barrier?
Border between the blood circulation and the CNS by diffusion. It gives permission what goes thru(nutritions, ions) and not(waste).
What kind of nutritions uses the brain the most?
Glucose
How many cardiac output does the brain receives?
20%
Which arteries forms the circle of Willis?
Vertebral arterie
Basilar arterie
Posterior cerebral
Middel cerebral
Anterior cerebral
Internal carotid
What are the four regions of the brain?
The cerebrum - Big brain
Diencephalon - Interbrain
Brainstam - Midbrain/pons/medulla oblongata
Cerebellum - Small brain
Which four lobes does the big brain have?
Frontal lobe (pre frontal cortex)
Parietal lobe
Temporal lobe
Occipital lobe
What is sulci and gyri?
Gyri Is the noodle
Sulci is the groove between the noodles
What is gray matter and what is white matter?
White matter are myelinated axons
Gray matter are the nerve cell bodies
What is the function of the frontal lobe?
Primair motor cortex
What is the function of the Parietal lobe?
Primary sensation/sensory
What is the function of the Occipital lobe?
Primary vision
What is the function of the temperal lobe?
Primary is hearing and speech
What is the function of the pre-frontal cortex?
Planning, memories and complex skill memories
Which side of the brain controls the left side of the body and which side of the brain controls the right side of the body?
Left brain right side
Right brain left side
What are association fibres, commissural fibres and projection fibres?
White matter
Assoiciation fibres are within one hemisphere (one sight)
Commissural fibres are connections between right and left hemisphere
Projection fibres bundels of axxons that are connected to the rest of the regions of CNS
What does the basal nuclei consists of and what does it do?
Masses of grey matter, ganglion, subconsciousnes, cycling and walking
Which three parts does the diencephalon (interbrain) conists of? And what do they do?
Epithalamus - Melatonin wake and sleep
Thalamus - Conscious awareness, blocks 99% of sensory input
Hypothalamus - control center for autonomic nerve system (breathing, circulation, temperature, thirst/hunger), produces hormones
What are the three parts of the brainstam? And what do they do?
Midbrain - Controle muscle tones and posture, HQ
Pons - Links small brain with the rest of the CNS
Medulla oblongata - Regulates vital autonomic functions
What are the two important functions of the Cerebellum (small brain)?
- Maintaining balance and equilibrium
- programming and fine tuning, learned movements patterns
How many spinal nerves are there? How many each?
8 cerv
12 thor
5 lumb
5 sacr
1 coccyx
What is the function of the spinal cord?
Highway for sensory and motor impulses between brain and organs
What are the three important structures of the spine?
Vertebrea
Spinal disc
Ligaments
Ventral root = sensory input
Dorsal root = motor output
Right or wrong?
Wrong
Ventral root = motor output
Dorsal root = sensory input
Where does the spinal nerve receives sensory information from?
The skin, called the dermatome
Where are the spinal nerves; C5, C6, C7, C8, T4, T10, L1, L4
Good luck touching yourself
What is a myotome?
The identifying muscle, the end station of the nerve
Name the 5 steps of the reflex arc?
1 Stimulus activates receptor
2 Receptor activates sensory
3 Proces interneuron
4 Inter neuron activates motor neuron
5 Motor neuron triggers respons by peripheral effector
What is the difference between simple and complex reflex?
Patella-reflex is simple reflex, you have no controle over
Hand in the fire is complex, if you want you can stay in the fire
What are the two divisions of the ANS?
Sympathetic
Parasympathetic
Sympathetic nerves are from T1 till L2. True or false?
True
Parasympathetic nerves are cranial nerves; 3, 7, 9 and 10.
True or false?
True
What are the signs of a stroke? And what are the fast diagnostics?
Blindness one side
Sensori-motor hemisyndrome
Speech
Dizziniess
Consciousness decreased
Face dropping one side
Arm/leg weakness
Speech difficulty
Management of a stroke?
Secure ABC
Evac
What is a seizure?
Sudden and temporal abnormal electric activity of the brain
Manifestation of seizure?
Typically acute onset, with short duration
Localized forms - one side of the brain/body
Generalized - both side
Management seizure
ABC
Protect patient voor injury
Exclude hypoglycemia
Seizure longer then 5 min - fucked up
What is meningitis?
Infection of the meninges
What are the signs of meningitis?
Severe headache
Fever
Stiff neck
Early management of meningitis?
ABC
Isolate patient
ABX
Give corticosteroids
Evac
What are the red flaggs for back pain?
Back pain <18 and >50
Recent trauma
Pain at rest and night
Symptoms of fever or weight loss
Radiation to the legs
Hypo or hyperreflexia