Anatomy First Year Bds: Test 1
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The skeleton of the head is called the _______
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Calvaria
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Neurocranium
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Skull
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Viserocranium
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Facial Skeleton
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This Anatomy quiz for first-year BDS students covers crucial aspects of head anatomy, including the skull structure, fontanelles, and relevant facial muscles. It assesses knowledge critical for medical professionals, focusing on both theoretical understanding and practical implications in medical studies.
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- 2.
How many fontanelles are present in the skull?
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6
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2
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8
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59
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1
Correct Answer
A. 6Explanation
In a newborn's skull, there are several soft spots, known as fontanelles, where the bones of the skull have not yet fused. There are typically six fontanelles, and they have specific names:
Anterior fontanelle
Posterior fontanelle
Mastoid fontanelle
Sphenoid fontanelle
Posterosuperior fontanelle
Anteroinferior fontanelle
These fontanelles allow for the flexibility needed during childbirth and early development. Over time, they gradually close as the bones of the skull fuse.Rate this question:
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- 3.
Deep to the H shaped suture, most commonly known as the Pterion lies?
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Middle meningeal artery
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Middle meningeal artery and vein
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Anterior division of the Middle meningeal artery, middle meningeal vein and stem of the lateral sulcus of the brain
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Internal Carotid artery
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Pterionic plexus of the lateral ventricle
Correct Answer
A. Anterior division of the Middle meningeal artery, middle meningeal vein and stem of the lateral sulcus of the brainExplanation
The Pterion is a point on the side of the skull where four bones come together: the frontal, parietal, temporal, and sphenoid bones. Deep to the H-shaped suture of the Pterion, there is a complex structure consisting of the anterior division of the Middle meningeal artery, middle meningeal vein, and the stem of the lateral sulcus of the brain. These structures are important for the blood supply to the meninges, the protective membranes surrounding the brain.Rate this question:
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- 4.
The thickest and strongest wall/walls of the Orbit is?
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Roof
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Medial Wall
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Lateral wall
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Floor and Lateral wall
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Floor
Correct Answer
A. Lateral wallExplanation
The lateral wall is the thickest and strongest wall of the Orbit. This wall provides protection to the eye and its surrounding structures. It is composed of several bones, including the zygomatic bone, maxillary bone, and greater wing of the sphenoid bone. These bones contribute to the strength and thickness of the lateral wall, making it capable of withstanding external forces and providing support to the orbital contents.Rate this question:
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- 5.
On the mandible, below the mylohyoid line the surface is slightly hollowed to lodge the ____
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Lower fibers of temporalis
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Submandibular gland
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Sublingual gland
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Anterior attachment of digastric muscle
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Mylohyoid groove
Correct Answer
A. Submandibular glandExplanation
Below the mylohyoid line on the mandible, there is a slight hollowed surface that is specifically designed to accommodate the submandibular gland. This gland is one of the major salivary glands and is responsible for producing saliva. The hollowed surface provides a space for the gland to sit comfortably and function properly.Rate this question:
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- 6.
The following muscle "flattens cheek against gums and teeth":
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Orbicularis Oris
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Risorius
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Zygomaticus major
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Zygomaticus minor
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Buccinator
Correct Answer
A. BuccinatorExplanation
The muscle that "flattens cheek against gums and teeth" is the Buccinator. This muscle is located in the cheek and is responsible for compressing the cheeks against the teeth and gums. It helps in actions such as blowing, sucking, and chewing.Rate this question:
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- 7.
The orbicularius oculi is supplied by the following branch/branches of the facial nerve:
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Temporal
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Zygomatic
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Temporal and Zygomatic
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Maxillary
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Buccal
Correct Answer
A. Temporal and ZygomaticExplanation
The orbicularis oculi muscle is responsible for closing the eyelids. It is innervated by the facial nerve. The facial nerve has several branches, including the temporal and zygomatic branches. These branches supply the orbicularis oculi muscle, allowing it to contract and close the eyelids. Therefore, the correct answer is temporal and zygomatic.Rate this question:
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- 8.
The sphincter muscle/muscles of the mouth is/are?
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Zygomaticus major and minor
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Orbicularis Oris
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Orbicularis Oculi
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Buccinator
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Risorius
Correct Answer
A. Orbicularis OrisExplanation
The correct answer is Orbicularis Oris. The orbicularis oris is a sphincter muscle of the mouth that encircles the lips. It is responsible for puckering the lips, closing the mouth, and controlling the movements of the lips during speech and facial expressions.Rate this question:
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- 9.
The veins drain as the following:
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Angular vein--->Facial vein--->Ant. division of retro-mandibular vein--->Internal Jugular Vein
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Supratrochlear+Supraorbital--->Post. division of retro-mandibular vein--->Internal Jugular Vein
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Angular vein--->Ant. division of retro-mandibular vein--->Internal Jugular Vein
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Supratrochlear+Supraorbital--->Ant. division of retro-mandibular vein--->Internal Jugular Vein
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Angular vein--->Ant. division of retro-mandibular vein--->External Jugular Vein
Correct Answer
A. Angular vein--->Facial vein--->Ant. division of retro-mandibular vein--->Internal Jugular VeinExplanation
The correct answer is the first option, which states that the veins drain in the following order: Angular vein--->Facial vein--->Ant. division of retro-mandibular vein--->Internal Jugular Vein. This means that the blood from the Angular vein first drains into the Facial vein, then into the Ant. division of retro-mandibular vein, and finally into the Internal Jugular Vein.Rate this question:
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- 10.
Bells Palsy is an:
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Supranuclear lesion, the whole of the face of BOTH sides gets paralysed
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Infranuclear lesion, the whole of the face of the OPPOSITE side gets paralysed
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Infranuclear lesion, the whole of the face of the SAME side gets paralysed
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Supranuclear lesion, the whole of the face of the OPPOSITE side gets paralysed
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Supranuclear lesion, the whole of the face of the SAME side gets paralysed
Correct Answer
A. Infranuclear lesion, the whole of the face of the SAME side gets paralysedExplanation
The correct answer is "Infranuclear lesion, the whole of the face of the SAME side gets paralyzed." This means that the paralysis affects only one side of the face, and it occurs below the level of the brainstem. Bells Palsy is a condition that causes sudden weakness or paralysis of the muscles on one side of the face, typically due to inflammation of the facial nerve. This inflammation can result in facial drooping, difficulty closing the eye, and other symptoms.Rate this question:
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Current Version
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Dec 19, 2023Quiz Edited by
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Jan 28, 2014Quiz Created by
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