Ch.5 Head Sectional Flashcards
This structure follows the shape of the lateral ventricle, it is:
- the floor of the anterior horns
- the body of the lateral ventricle
- the roof of the inferior horns
Caudate nucleus
This forms the lateral wall of the third ventricle.
Thalamus
This is a single midline structure.
3rd Ventricle
This is a band of white fibers that separates the caudate nucleus and thalamus medially from the lentiform nucleus laterally.
Internal Capsule
This is a large white band that connects the two cerebral hemispheres.
corpus callosum
This structures surrounds the cerebral aqueduct and consists of the cerebral peduncles anteriorly and the corpora quadrigemina posteriorly.
The Midbrain
This is located in the superior margin of the falx cerebra.
superior sagittal sinus
This is located in the inferior margin of the falx cerebri.
The inferior sagittal sinus
This forms a partition between the cerebrum and the cerebellum.
Tentorium Cerebelli
This forms a junction between the tentorium cerebelli and the falx cerebri.
Straight sinus
These two structures project into the superior cistern.
pineal body and corpra quadrigemina
This sinus courses laterally along the internal surface of the occipital bone.
Transverse sinus
This ventricle is at the level of the pons and the cerebellum.
4th Ventricle
The cerebellar peduncles connect this structure with other parts of the central nervous system.
Cerebellum
This sinus is anterior to the hypophysis.
sphenoid
The internal carotid arteries go through what sinus that lays laterally to the hypophysis.
Cavernous Sinus
This artery is in the pontine cistern anterior to the pons.
Basilar Artery
The sigmoid sinus drains into what?
The internal jugular vein
This muscle is lateral to the ramus of the mandible.
Masseter
This muscle is medial to the ramus of the mandible
Temporalis
This gland is posterior to the ramus, anterior to the mastoid, and lateral to the internal jugular vein and internal carotid artery.
Parotid
The layer of the cerebral hemispheres is gray matter and is called what?
cortex
What is the space between the cerebral hemispheres?
Longitudinal Fissure
What is the membranous partition between the cerebral hemispheres?
Falx cerebri
What is the layer of meninges that is in closest contact with the surface of the cerebrum?
Pia Mater
What are the 3 layers of meninges?
- Dura Mater- outer fibrous connective tissue
- Arachnoid- Thin layer
- Pia Mater- Most delicate inner layer
What is the name of the meningeal layer that forms the tough outer covering for the brain?
Dura Mater
What is the name of the space between two adjacent cerebral gyri?
Sulci
What is the name of the meningeal layer that extends from the top of one gyrus to another forming a bridge over the sulci?
Arachnoid
Between which two layers of meninges is the cerebrospinal fluid located?
Arachnoid and Pia Mater
Which ventricle of the brain is the most superior?
Lateral ventricle
What is the most anterior lobe of the cerebrum?
Frontal
What blood filled space is located in the superior margin of the falx cerebri?
Superior Sagittal Sinus
Name the 5 regions and meninges between the outer layer of meninges and the cerebral cortex.
- Dura Mater
- Falx Cerebri
- Arachnoid
- Subarachnoid
- Pia Mater
What blood vessels are located in the anterior portion of the longitudinal fissure?
Anterior cerebral artery
What is the blood filled space at the internal margin of the posterior part of the falx cerebri?
Inferior Sagittal Sinus
What region of white matter is between the caudate nucleus and the lentiform nucleus?
Internal Capsule
Which of the basal ganglia is closest to the insula?
Extreme Capsule
What specialized capillary struture is found in the ventricles of the brain?
Choroid Plexus
What is the name f the venous sinus located at the junction of the flax cerebri and the tentorium cerebella?
Inferior Sagittal Sinus
How can you distinguish between the inferior sagaittal sinus and the straight sinus?
The straight sinus will be closer in proximity to the superior sagittal sinus posterior.
What is the blood vessel in the space anterior to the pons?
Basilar Artery
What blood vessels are immediately lateral to the pituitary gland?
Internal Carotid
What large cranial nerve is typically evident as it emerges from the pons?
Optic Nerve
What lobe of the brain is evident anterior to the petrous ridges?
Temporal Lobe
What is the name of the dura mater between the 2 cerebellar hemispheres?
Falx Cerebri
What is the name of the central part of the cerebellum?
Vermis
What bone forms the majority of the lateral walls of the nasal cavity?
Maxillary
What specific band of bone is lateral to the temporalis muscle?
Zygomatic Arch
What bone forms the majority of the medial wall of the orbit?
Ethmoid
Into what vessel does the sigmoid sinus drain?
Internal Jugular
What muscle is lateral to the ramus of the mandible?
Masseter Muscle
What portion of bone is immediately posterior to the parotid gland?
Mastoid Process
The space posterior to the nasal cavity is called the?
Nasopharynx
Which is more anterior the carotid canal or the jugular foramen?
Carotid Canal
In sagittal sections through the lateral region of the face and neck, what gland is located anterior and inferior to the EAM?
Parotid Gland
All muscles of facial expression are innervated by this cranial nerve and insert on the skin of the face. These mucles include -frontalis, orbicularis oculi, orbicularis oris, buccinator and platysma.
Cranial Nerve VII (facial)
These muscles of mastication are innervated by the mandibular division of this cranial nerve and insert on the mandible and consist of - masseter-temporalis-lateral pterygoid and medial pterygoid muscles.
Cranial Nerve V (Trigeminal)
This is the largest salivary gland and is wedged between the ramus of the mandible and the mastoid portion of the temporal bone.
Parotid gland
This gland is located medial to the body and the angle of the mandible.
Submandibular
This gland is the smallest salivary gland and is located in the floor of the mouth adjacent to the lingual frenulum.
Sublingual
What are the 5 lobes that each cerebral hemisphere is divided into?
- Frontal
- Parietal
- Occipital
- Temporal
- Insula
These are regions of gray matter scattered throughout the cerebral white matter.
Basal Ganglia
The basal ganglia include what 3 structures?
- Caudate Nucleus
- Lentiform Nucleus
- Claustrum
This is centrally located and surrounded by the cerebral hemispheres.
Diencephalon
The Diencephalon consists of what 3 parts?
- epithalamus
- thalamus
- hypothalamus
The brainstem is divided into what 3 parts?
- Midbrain
- Pons
- Medulla Oblongata
The Midbrain is divided into what 2 parts?
- Corpora Quadragemina
- Cerebral Peduncles
The cerebellum is located ____ to the brainstem.
Posterior
The cerebellum has 2 hemispheres that are connected by what structure?
Vermis
Gray matter surrounding the branching white matter is called?
Arbor Vitae
Cerebrospinal fluid is produced by what?
Choroid Plexus in the ventricles