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Gross Anatomy 2

Brain Stuff

QuestionAnswer
Contains the corticospinal tract in what part of the brain pyramids and pyramidal decussation; Medulla
Produced by the inferior olivary nucleus which projects fibers to the cerebellum in what part of the brain Olive; Medulla
Contains ascending ipsilateral sensory fibers from T6 and below in what part of the brain fasciculus gracilis; Medulla
Contains ascending ipsilateral sensory fibers from T6 and above in what part of the brain fasciculus cuneatus; Medulla
Produced by the nucleus gracilis where fibers from fasciculu gracilis synapse in what part of the brain gracile tubercle; Medulla
Produced by nucleus cuneatus where fibers from fasciculus cuneatus synapse in what part of the brain cuneate tubercle; Medulla
Cranial nerves emerging from Medulla CN 9,10, 11(cranial portion), 12
Sulci and fissures on the Medulla ventrolateral sulcus, dorsolateral sulcus, dorsal median, ventral median fissure
Fibers connecting the medulla and cerebellum inferior cerebellar peduncle
Cranial nerve nuclei in the Medulla CN 8(Part), 9, 10, 11(cranial portion), 12, 5(Part)
Pons is divided into two parts Dorsal pons/tegmentum and basal pons
Part of the pons that forms the floor of the 4th ventricle and contains nuclei and tracts Dorsal pons/tegmentum
Ventral, bulbous portion of the pons Basal pons
Contains neurons whose axons cross to the opposite side and enter the cerebellum Basal pons
Basal pons provides a connection between ____ and the ____ cerebellum and contralateral cerebrum
Fibers connecting the pons and the cerebellum middle cerebellar peduncle
Cranial nerve nuclei in the dorsal pons/tegmentum CN 5(part), 6, 7, 8(part)
Cranial nerves emerging from the pons CN 5(part), 6, 7, 8(part)
Regions of the midbrain tectum and cerebral peduncle
Midbrain is divided by what? cerebral aquaduct
Part of the midbrain that is dorsal to the cerebral aqueduct Tectum
Part of the midbrain that is ventral to the cerebral aqueduct cerebral peduncle
Cerebral peduncle is divided into two parts tegmentum and basal peduncle
Posterior to substantia nigra tegmentum
Anterior to substantia nigra and contains corticospinal tract basal peduncle
This is in the tectum of the midbrain and its composed of what corpora quadrigemina; superior colliculi and inferior colliculi
Cranial nerves emerging from the midbrain CN 3 and 4
Fibers connecting the midbrain and cerebellum Superior cerebellar peduncle
Cranial nerve nuclei in the midbrain 3,4,5(part)
Other nuclei in the midbrain red nucleus, substantia nigra, superior colliculus and inferior colliculus
An extrapyramidal motor nucleus Red Nucleus
Extrapyramidal motor nucleus and site of pathology in parkinson's substantia nigra
Nuclei involved in visual reflexes Superior colliculus
Nuclei involved in the auditory pathway Inferior colliculus
Core of the cerebrum Diencephalon
A large collection of nuclei in the diencephalon which project to the cerebral cortex thalamus
Thalamus has 3 parts medial geniculate, lateral geniculate and ventral posterior
Of the thalamus, which part is involved in the auditory pathyway medial geniculate
Of the thalamus, which part is involved in the visual pathway lateral geniculate
Of the thalamus which part is involved in the general sensory pathways ventral posterior
Collection of nuclei located anterior and inferior to the thalamus hypothalamus
Influences the autonomic and endocrine systems hypothalamus
What does the hypothalamus include mamillary nucleus and infundibulum
Region above and posterior to the thalamus epithalamus
What does the epithalamus contain pineal gland
Lobes of the telencephalon frontal, parietal, occipital, temporal, insula
Primary motor area In frontal lobe on precentral gyrus
Secondary motor area/premotor area Anterior to the primary motor area in the frontal lobe
Primary somatic sensory/primary general sensory area/somatosensory area On the postcentral gyrus in the parietal lobe, for general sensation
Primary auditory area In the temporal lobe, for hearing
Primary visual area In the occiptal lobe adjacent to the calcarine fissure, mostly on the medial aspect, for vision
Motor speech area/broca's area On the lateral frontal lobe
Sensory language area/wernicke's area On the temporal and parietal lobes, usually on the left side
Olfactory area On the medial aspect of the temporal lobe
Areas adjacent to each of the primary sensory cortices, where meaning is given to the sensation Association Cortex
Large, C-shaped extrapyramidal motor nucleus located in the wall of the lateral ventricle of the telencephalon caudate nucleus
Wedge-shaped extrapyramidal motor nucleus of the telencephalon lenticular nucleus
Lenticular nucleus is composed of two distinctly different nuclei Putamen(lateral nucleus) & Globus Pallidus(medial nucleus)
Located in the temporal lobe associated with the olfactory and limbic systems Amygdaloid Nucleus
Fibers in the medullary white that connect cortices within the same hemisphere Association Fibers
Fibers in the medullary white that connect cortices in opposite hemispheres Commissural Fibers
Fibers in the medullary white that connect the cortex with subcortical areas Projection Fibers
Major white areas Internal Capsule, Corpus Callosum, Fornix
Essentially a large extrapyramidal motor center located in the posterior cranial fossa cerebellum
Functions of the cerebellum maintains equilibrium, adjusts muscle tone, influences synergy of muscle movement, influences voluntary, fine motor movement
CT coverings over the brain and spinal cord Meninges
Delicate vascular tissue lying on the surface of the PNS Pia Mater
External to the pia mater Arachnoid mater
Between the pia and arachnoid mater subarachnoid space
What contains CSF subarachnoid space
Outermost layer dura mater
Blood spaces within the dura overlying the brain and contains most of the venous blood from the brain dural sinuses
Small outpockets of archnoid bulging into the dural sinuses arachnoid granulations/arachnoid villi
Dural reflection that separates the left and right hemispheres falx cerebri
Dural reflection that forms a tent over the cerebellum Tentorium Cerebelli
Sheath of dural withing the vertebral canal extending from the foramen magnum to the second sacral segment and anchored to the coccyx by what? Dural Sac; filum terminale
Tooth-like lateral extensions of the pia around the cord Denticulate ligaments
Anchors the pia and arachnoid to the dura Denticulate ligaments
A pair in the cerebral hemispheres connected to the third ventricle by the what? Lateral Ventricles; Interventricular foramina
In midline and in diencephalon 3rd ventricle
In the midbrain and connects the 3rd and 4th ventricles Cerebral Aqueduct
Between cerebellum and pons/medulla 4th Ventricle
Expanded subarachnoid spaces Cisterns
Medial and lateral apertures open into this space Cerebellomedullary Cistern
Vascular CT inside the ventricles that forms the CSF Choroid Plexus
Created by: 1277880004