Neuro module 1 Flashcards
Congenital malformation wherein there is a failure in closure of vertebral arches , the Spinal cord &/or nerve roots included
Spina bifida with meningomyelocele
Which of the following are INCORRECTLY paired?
A. Neuroepithelium - neuroblast - neuron
B. Neural tube - mesenchymal cells - microglial cell
C. Ectoderm - neural tube - neuroepithelium - oligodendrocyte
D. Neuroectoderm - glial blast - astrocyte
B - Mesenchymal cells are DIRECTLY from MESENCHYME
During the third week of embryonic growth the brain begins to develop in the early fetus in a process called _____________
Induction
Connection between the 3rd and 4th ventricle
Cerebral aqueduct
A part of a neuron that has special sensory receptors.
Dendrites
Calvaria and brain are small but the face is normal size, thus the brain is underdeveloped
Microencephaly
Arachnoid & pia mater is collectively known as
Leptomeninges
Which part of the neuron is Longer in length, absent Nissl Bodies, absent Spine/ Gemmules
AXON
During 4th week of development, these flexures persist.
Brain flexures (midbrain flexure and cervical flexure)
Common symptoms of this disease is Hypoplastic, flaccid bilateral LE. Urinary incontinence due to areflexia.
Lumbar menigomyelocele
Broca area is located at Brodmann area
44, 45
True or false. neural crest soon divides into three cell masses
False. Two
Membrane surrounding the brain and spinal cord that is impermeable to fluid
Pia mater
Posterior lobe of the cerebellum is connected to the ______
Cerebral cortex
A part of neuron that has specialized motor receptors
Axon
MOTOR-ACTION-AXON
It surrounds the brain and the spinal cord and is responsible for keeping in the cerebrospinal fluid
Dura mater
What cranial nerves are located in the midbrain
III , IV
The cytoplasm of the cell body contains large aggregations of ___________
Rough endoplasmic reticulum- Nissl substances
Unipolar neurons in the spinal ganglia are derived from ________________
Neural crest cells
What part of the brainstem can you see the olives
Medulla
All sensory neurons and association neurons are Multipolar. TRUE OR FALSE? if false, what makes the statement wrong?
FALSE. Motor and association neurons are Multipolar neuron. Sensory neurons are pseudoUnipolar and Bipolar.
Separates right and left hemisphere
Longitudinal fissure
Separates temporal and parietal lobe
Lateral fissure of Sylvius
Clusters of basophilic Rough ER, found in abundance in the neuron soma.
Nissl bodies
What lobe of the cerebellum is for the coordination of limb movements
Anterior
What part of the brain Forms the caudal floor of the 4th ventricle
Medulla
Anomalies associated with acrania
Meroanencephaly
Anterior and posterior lobe of the cerebellum is divided by
Primary fissure
There are three types of neurons. Please draw.
Multipolar- Has numerous dendrites projecting from the cell body
Bipolar – only a single dendrite which arises from the pole of the cell body opposite to the origin of the axon
Pseudounipolar – a single dendrite and axon arise from a common stem of the cell body unipolar,
Anomaly concerning meninges, part of the brain and ventricular system
Meningohydroencephalocele
Also called the neocerebellum
Posterior lobe
Cranial nerve IX has ____ function
A. Motor
B. sensory
C. Motor and sensory
C. Remember the mnemonic Some Say Marry Money But My Brother Says Bad Business Makes Money Legend M - motor S- sensory B - both
Failure of the cephalic part of the neural tube to close during the 4th week of development
Exencephaly
Immune mediated destruction of myelin confined to the CNS leading to slowing of conduction and neurological dysfunction
Multiple sclerosis
What lobe of the cerebellum is associated with balance
Flocculonodular
Where can Centers associated with auditory, visual and pupillary reflexes be found
Midbrain
Which of the following are not paired correctly:
A. Frontal: logic:: parietal: pain
B. Vagus: sensory:: Abducens: mixed
C. Midbrain: aqueduct :: Thalamus: third ventricle
B - vagus: mixed while abducens: motor
This part of the neuron has No Golgi apparatus, and Nissl Bodies
axon
What neurotransmitter is secreted by the substantia nigra
Dopamine
It lines cavities within brain ( ventricles ) and spinal cord (central canal.
Ependymal cells* cuboidal or columnar in shape
Cytoplasmic process of a neuron except
A. Perikaryon
B. Axon
C. Dendrites
A
What do you call the swellings or the smaller branches of axon?
Terminal Bouton
Pons cranial nerves
Trigeminal (V)
Abducens (VI)
Facial (VII)
Vestibulocochlear (VIII)
Brodmann area for primary motor
4
When does formation of neural plate takes place
3rd week of gestation
NTD’s can be predetermined through Amniocentesis which will confirmed an elevated maternal serum called ________
AFP (alpha fetoprotein)
Brain stem is composed of
Midbrain, pons, medulla
All sensory neurons are Pseudounipolar Except sensory neurons of special senses classified as Bipolar. True or false, if false what makes the statement wrong?
TRUE
Reduces the incidence of NTD by as much as 70% if ________ is taken daily 3 months prior to conception and continuing throughout gestation
Folic acid/folate, 400 mg
Neuron that is responsible for the myelination of the CNS
Oligodendrites
PNS- Schwann cells
What portion of the brain forms the lower part of the lateral wall and floor of the Third ventricle
Hypothalamus
Congenital malformation that results in Non fusion of the embryonic halves of the vertebral arches
Spina Bifida
Right and left hemisphere is divided by
Longitudinal fissure
- A disorder wherein there is immune mediated destruction of myelin confined to the CNS leading to slowing of conduction and neurological dysfunction.
- in the PNS?
- Multiple sclerosis
2. Guillain Barre Syndrome
True or false. The difference in structure of the superior and inferior follicular is the presence of substantia nigra
False. The presence of red nucleus in the superior and its absence in the inferior colliculi
Projection that connects broca’s area and wernicke’s area?
Arcuate fasciculus
Medulla cranial nerves
Glossopharyngeal (IX)
Vagus (X)
Accessory (XI)
Hypoglossal (XII)
Property of a neuron that enables it to transmit information for one cell to another
Conductivity
This pathway results in hyperkinesis of the thalamus (if altered with over production excitatory neurotransmitter)
Direct pathway
Primary gustatory area can be seen in what lobe
Parietal lobe
Separates parietal and occipital lobe
Transverse sulcus
dissolution of the Nissl bodies in the cell body of a neuron
Chromatolysis
Brodmann area for primary sensory
3,1,2
These are Highly specialized intercellular junctions which allow communication by linking neurones of each nervous pathway
Synapse
Immune mediated destruction of myelin inthe PNS; illness is often trigerred by an infection
Guillain-Barre Syndrome
What cerebellar lobe is associated with regulation of muscle tone
Anterior
True or false. Embryonic endoderm over developing notochord thickens to form neural plate
False. Ectoderm
Which part of the brain Influences the timing and force of contractions of voluntary muscle
Cerebellum
Indicate the boundary between motor (medial), sensory (lateral)
Striae medullaris
Spinal cord in affected area is open because the neural folds failed to fuse
Spina bifida with myeloschisis
Brodmann area for wernicke’s area
22
What neurotransmitter is destroyed during Alzheimer’s disease? what destroys it?
Alzheimer’s disease an early pathological feature is loss of synapses from the Hippocampus and Cerebrum;
the synapses mediating neurotransmission are affected; acetylcholine is rapidly destroyed once secreted by cholinesterases
Posterior and flocculonodular lobe of the Cerebellum is divided by the
Posterolateral fissure
Neural tube : CNS = _____: PNS
Neural crest
Extends from the the frontal to occipital bones, above the anterior and middle cranial fossa. Posteriorly above the tentorium cerebelli.
Cerebrum
Parietal and occipital lobe is separated by the
parieto-occipital sulcus
What type of cell in the nervous system can transform into large amoeboid phagocytic cell cells.
Microglia.For Protectionirregular shape , rod like comma shaped nucleus *from mesenchyme