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7-8 cranial cavity

QuestionAnswer
The teeth are located on what processes? Alveolar of maxilla and mandible
What does the coronal suture separate? Frontal and parietal bones
Are sphenoid and ethmoid paired? No
What is the name for an additional bone in a suture? Sutural bone
What does the squamous suture separate? Temporal and parietal bones
What runs deep the pterion? Middle meningeal a.
What is bregma? Where coronal and sagittal sutures meet
What is lambda? Where lamboid and sagittal sutures meet
What does the occipital condyle articulate with? Superior articular facet of C1
What does the sagittal suture separate? Parietal bones
What forms part of the hard palate? Palatine process
What nerve runs through the stylomastiod foramen? Facial nerve
What does the spinal cord run through? Foramen magnum
What is located near the hypophysial plate? Pitutary gland
Five layers of the scalp and characteristics Skin Connective Tissue Aponeurosis- epicranial Loose connective tissue- peels away Pericranium- superficial to skull
What are epidural and subdural spaces? POTENTIAL spaces where bleeding can happen
Two layers of dura mater Periosteal (against skull) and meningeal layers
Three layers of the meninges superficial to deep Dura, arachnoid, pia
Arachnoid mater characteristics Means spider; thin, flimsy
Pia mater characteristics Deepest layer, on brain
What two locations is CSF found? Dural venous sinuses and subarachnoid space
What is located in the subarachnoid space? Arteries, blood flow to brain, CSF
What is the superior sagittal sinus for? Blood flow, between two layers, CSF due to leaking
What is the sickle shaped area of dura mater that goes into cerebral hemispheres? Falx cerebri
What planes is the falx cerebri in? Mid-sagittal and sagittal
What is the tent over the cerebellum named? Tentorium cerebelli
What is the confluence of sinuses? Where the superior sagittal, inferior sagittal, and transverse sinuses come together and drain. This is how CSF leaks into subarachnoid space. Located anteriorly and interally from the occipital protuberance
What does the sigmoid sinus drain into? Internal jugular vien
What sinus causes infections to spread? Cavernous sinus, drains into internal carotid
What is the dura mater important for? Keeping the blood from the body and brain separate; blood brain barrier
Why are pitutary gland tumors so dangerous? They compress the nerves and vessels
Four lobes of the cerebrum and responsibilites Temporal- hearing Occipital- vision Frontal- emotions, higher learning Parietal- spatial awareness
What does the central sulcus separate? Frontal and parietal lobes
What is the middle aspect of the brain? Diencephalon
What are the responsibilities of the thalamus and hypothalamus? Thalamus- relay system Hypothalamus- thirst, hunger, hormone secretion, etc
What are the three parts of the brainstem? Top- midbrain Middle- pons Bottom- medulla oblongata
What are the three things the medulla oblongata helps with? Respiratory, cardiac, vomit centers
What is in charge of balance and motor coordination? Cerebellum
What joins the right and left sides of the brain? Corpus collosum
What are the lateral ventricles (1st and 2nd) inferior to? Corpus collosum
What connects the 3rd and 4th ventricles? Cerebral aqueduct
what is the 4th ventricle posterior to? Pons
CSF contents Mostly water, some nutrtients; made by the choroid plexus
What connects the right and left thalamus? Interthalamic relay
Circle of Willis Internal carotid and all cerebral arteries. Commuication
What arteries are often involved with strokes? Middle cerebral, anterior inferior and posterior inferior cerebellar arteries
What is formed by the vertebral arteries? Basilar artery
What supplies the occipital lobe with arterial blood? Posterior cerebral artery
What is a major branch from the internal carotid? Middle cerebral a.
What is the bifurcation of the basilar artery? Posterior cerebral artery
What is a common area for aneurysms? Basilar artery bifurcation
Anterior ethmoidal foramen Anterior ethmoidal artery, nerve, vein *Ethmoid bone*
Foramina of Cribiform Plate Olfactory nerves *Ethmoid bone*
Posterior ethmoidal foramen Posterior ethmoidal artery, nerve, vein *Ethmoid bone*
Optic canal Optic nerve (CN II), ophthalmic artery *Sphenoid bone*
Superior orbital fissure Oculomotor nerve (CN III), trochlear nerve (CN IV), ophthalmic nerve (CN V-1, 3 branches), abducens nerve (CN VI), superior ophthalmic vein *Sphenoid bone*
Foramen rotundum Maxillary neve (CN V-2) *Sphenoid bone*
Foramen ovale Mandibular nerve (CN V-3), accessory meningeal artery, lesser protrosal nerve *Sphenoid bone*
Foramen spinosum Middle meningeal artery and vein, meningeal branch of mandibular nerve *Sphenoid bone*
Foramen lacerum Greater protrosal nerve *Between sphenoid and temporal bones*
Hiatus for lesser and greater protrosal nerves NERVES *Temporal bone*
Internal acoustic meatus Facial nerve (CN VII), vestibulocochlear nerve (CN VIII), labyrinthine artery *Temporal bone*
Jugular foramen Inferior protrosal sinus, glossopharyngeal nerve (CN IX), vagus nerve (CN X), accessory nerve (CN XI), sigmoid sinus, posterior meningeal artery *Between occipital and temporal bones*
Hypoglossal canal Hypoglossal nerve (CN XII) *Occipital bone*
Foramen magnum Spinal cord, medulla oblongata, meninges, vertebral arteries, meningeal branches of vertebral arteries, spinal roots of accessory nerves *Occipital bone*
Created by: beranml