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L1: Skull and Cranial Cavity
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L1: Skull and Cranial Cavity

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Questions and Answers

Which of the following imaging techniques is commonly used to identify strokes?

  • CT scan (correct)
  • X-ray
  • Ultrasound
  • T2-weighted MRI

    • Which artery is most commonly involved in strokes?

  • Inferior cerebral artery
  • Lateral cerebral artery
  • Anterior cerebral artery
  • Middle cerebral artery (correct)

    • Which portion of the brain does the middle cerebral artery supply?

  • Inferior
  • Posterior
  • Anterior
  • Lateral (correct)

    • What happens when there is no anastomoses of cerebral arteries within the brain?

    <p>Ischemia occurs</p> Signup and view all the answers

    What are the possible deficits caused by a stroke in the area supplied by the middle cerebral artery?

    <p>Lateral deficits</p> Signup and view all the answers

    What is the function of the cerebellum?

    <p>Balance and posture</p> Signup and view all the answers

    Which layer of the scalp will contain the majority of the blood vessels supplying the tissues of the scalp?

    <p>Dense Connective Tissue</p> Signup and view all the answers

    Which bone does not directly suture with the frontal bone?

    <p>Mandible</p> Signup and view all the answers

    Which sense is the olfactory nerve (CN I) responsible for?

    <p>Smell</p> Signup and view all the answers

    Which main arteries supply the brain?

    <p>Internal carotid and vertebral arteries</p> Signup and view all the answers

    What is the name of the arterial circle formed by anastomosis between the internal carotid arteries and the vertebral arteries?

    <p>Circle of Willis</p> Signup and view all the answers

    Which artery supplies the medial and superior surfaces of the brain and frontal pole?

    <p>Anterior cerebral artery</p> Signup and view all the answers

    Which artery supplies the lateral surfaces and temporal pole of the brain?

    <p>Middle cerebral artery</p> Signup and view all the answers

    Which artery supplies the inferior surfaces and occipital pole of the brain?

    <p>Posterior cerebral artery</p> Signup and view all the answers

    What are the sites of exit and entry to the skull for veins and cranial nerves called?

    <p>Foramina</p> Signup and view all the answers

    Which portion of the skull is responsible for holding the brain?

    <p>Visceral cranium</p> Signup and view all the answers

    Which bones make up the facial skeleton?

    <p>Nasal bones</p> Signup and view all the answers

    Which portion of the skull is responsible for making up the forehead?

    <p>Frontal bone</p> Signup and view all the answers

    What is the purpose of fontanelles in newborn infants?

    <p>To allow for expansion of the skull</p> Signup and view all the answers

    Which layer of the scalp contains the upper neurosis of the occipital frontal muscle?

    <p>Dense connective tissue</p> Signup and view all the answers

    Which layer of the scalp is responsible for the blood supply to the scalp?

    <p>Dense connective tissue</p> Signup and view all the answers

    What is the function of the upper neurosis in the scalp?

    <p>To connect the frontal and occipital muscles</p> Signup and view all the answers

    Why is understanding the anatomy of the scalp important in cases of lacerations?

    <p>To control bleeding</p> Signup and view all the answers

    What is the layer of the meninges that runs down the longitudinal fissure called?

    <p>AP Neurosis</p> Signup and view all the answers

    Why is it more difficult for a laceration on the scalp to heal compared to a laceration on the arm?

    <p>The scalp has a mobile muscle layer underneath</p> Signup and view all the answers

    Why does the upper neurotic layer move?

    <p>Because of the movement of the muscles on either side</p> Signup and view all the answers

    What is the main reason why a skull injury can lead to bleeding?

    <p>The skull is difficult to suture properly</p> Signup and view all the answers

    Which bone in the skull is thinner at suture points where multiple bones come together?

    <p>Frontal bone</p> Signup and view all the answers

    What is the condition called when there is a buildup of pressure within the skull due to a blockage in the ventricular system?

    <p>Hydrocephalus</p> Signup and view all the answers

    Which age group is more likely to have a fontanelle, a cartilaginous structure that allows for expansion and compensation in case of increased intracranial pressure?

    <p>Children</p> Signup and view all the answers

    What is the risk associated with injuries to the thinner areas of the skull, such as the temple?

    <p>Damage to the middle meningeal artery</p> Signup and view all the answers

    What are the contents of the Cribriform plate?

    <p>CN 1</p> Signup and view all the answers

    What are the contents of the Optic Canal?

    <p>CN2, Ophthalmic Artery</p> Signup and view all the answers

    What are the contents of the superior orbital fissure?

    <p>CN 3, 4, 6, 5, (V1)</p> Signup and view all the answers

    What are the contents of the Rotundum?

    <p>CN5 V2</p> Signup and view all the answers

    What are the contents of the Ovale?

    <p>CN5 V3, AMMA</p> Signup and view all the answers

    What are the contents of the Spinosum?

    <p>Middle Meningeal Artery</p> Signup and view all the answers

    What are the contents of the lacerum?

    <p>*Carotid artery</p> Signup and view all the answers

    What are the contents of the Internal Acoustic Meatus?

    <p>CN 7 and 8</p> Signup and view all the answers

    What are the contents of Jugular Foreamen?

    <p>CN 9, 10, 11, and IJV</p> Signup and view all the answers

    What are the contents of the Hyoglossal Canal?

    <p>CN 12</p> Signup and view all the answers

    What are the contents of the Magnum?

    <p>Spinal Cord</p> Signup and view all the answers

    What is the order of the layers of the SCALP?

    <p>Skin, Dense Connective Tissue, Aponeurosis of occipitofrontal muscle, Loose connective tissue, Periosteum of the Skull</p> Signup and view all the answers

    What bones make up the neurocranium?

    <p>Parietal, Occipital, Temporal, Sphenoid, and Ethmoid</p> Signup and view all the answers

    Vertebral arteries enter in which part of the brain to unite and form the basilar artery?

    <p>Foramen Magnum</p> Signup and view all the answers

    What is the suture point between the frontal, parietal, temporal, and sphenoid bones?

    <p>Pterion</p> Signup and view all the answers

    What is the term that refers to the build-up of CSF in the skull and presents differently in children and adults?

    <p>Hydrocephalus</p> Signup and view all the answers

    Study Notes

    Skull and Cranial Cavity Module 202 - Lecture 1 Summary

    • Module 202 Anatomy consists of 4 lectures and 4 DR sessions.
    • The lectures cover topics such as the skull, cranial cavity, face, temporal and infratemporal fossa, the orbit and nasal cavity, and the neck and oral cavity.
    • There are additional optional DR sessions for brain removal and face and neck dissection.
    • Students can redeem a free Complete Anatomy Student licence for the module.
    • Slido Q&A is available for students to post anonymous anatomy-related questions.
    • The scalp is composed of skin, connective tissue, aponeurosis, loose connective tissue, and periosteum.
    • Lacerations to the scalp bleed profusely due to the inability of the dense connective tissue layer to retract.
    • The skull is divided into the neurocranium and viscerocranium, which join at sutures.
    • The neurocranium includes bones such as the frontal and ethmoid bones.
    • The viscerocranium includes bones such as the palatine, zygoma, and mandible.
    • The skull contains cranial foramina through which veins, cranial nerves, and arteries enter and exit.
    • The blood supply to the head, neck, and brain is provided by the internal carotid artery, vertebral artery, and the cerebral arterial circle (Circle of Willis).

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    T1 L1 - The Skull and Cranial Cavity 23_24.html

    Description

    Test your knowledge of the skull and cranial cavity with this quiz. Learn about the structure and functions of this important part of the human body.

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