Human Anatomy and Physiology : Identifying Bones of the Skull

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #41 : Identifying Bones Of The Skull

Which of the following bones of the human cranium consists of a squamous, orbital, and nasal part and correlates roughly to the "forehead"?

Possible Answers:

Temporal bone

Parietal bone

Frontal bone

Vomer bone

Occipital bone

Correct answer:

Frontal bone

Explanation:

The frontal bone consists of a squamous, orbital, and nasal part and refers generally to the part of the body known as the "forehead"?

Example Question #42 : Identifying Bones Of The Skull

Which of the following bones of the human cranium is single, rather than paired?

Possible Answers:

Zygomatic bone

Occipital bone

Temporal bone

Parietal bone

Maxilla

Correct answer:

Occipital bone

Explanation:

The occipital bone is a single, saucer-shaped bone located at the back and lower part of the skull. The parietal, temporal, and zygomatic bones, as well as the maxilla, are all paired bones; the two halves of each are located opposite one another along the midsagittal plane.

Example Question #43 : Identifying Bones Of The Skull

Which of the following bones of the human cranium articulates with the frontal, sphenoid, and temporal bones, as well as the maxillae?

Possible Answers:

Zygomatic bone

Occipital bone

Parietal bone

Mandible

Nasal bone

Correct answer:

Zygomatic bone

Explanation:

The zygomatic bone, also referred to as the cheekbone, articulates with four bones: the frontal, sphenoid, temporal, and maxillae. The nasal bone articulates with the frontal bone, ethmoid bone, and the maxilla. The mandible articulates with the temporal bones. The occipital bone articulates with the two temporal bones, the two parietal bones, the sphenoid bone, and the atlas. The parietal bone articulates with the frontal bone, the temporal bones, and the occipital bone.

Example Question #44 : Identifying Bones Of The Skull

Which of the following bones of the human cranium is situated at the sides and base of the skull and houses the structures of the organ of hearing?

Possible Answers:

Maxillae

Occipital bone

Zygomatic bone

Parietal bone

Temporal bone

Correct answer:

Temporal bone

Explanation:

The temporal bones are situated at the sides and base of the skull and house the structures of the organ of hearing. They are called temporal bones because the anatomists coining such terms were beginning to get gray hair, and they noticed that the grey hair always shows up first (temporally) on the sides of the head - in the temporal region. 

Example Question #45 : Identifying Bones Of The Skull

What is the dental formula for a modern human child?

Possible Answers:

2:1:1:2

2:1:2:3

2:1:0:2

2:1:3

2:1:1:2

Correct answer:

2:1:0:2

Explanation:

The dental formula for a modern human child is 2:1:0:2 in each quadrant: two incisors, one canine, and two molars, for a total of 20 deciduous teeth. There are no premolars in deciduous dentition.

Example Question #45 : Identifying Bones Of The Skull

What suture ties together the occipital and two parietal bones on the posterior cranium?

Possible Answers:

Squamosal suture

sagittal suture

coronal suture

Lambdoidal suture

basilar suture

Correct answer:

Lambdoidal suture

Explanation:

The lambdoidal suture ties together the occipital and two parietal bones on the posterior cranium.

The sagittal suture runs along the top of the cranium, between the two parietal bones. The coronal suture runs laterally from the top of the cranium and ties together the frontal and two parietal bones. The squamosal suture is the area where the squamosal section of the temporal bone is beveled and overlaps the parietal bone. The basilar suture, also referred to as spheno-occipital synchondrosis, is a suture between the occipital and sphenoid bones.

Example Question #381 : Gross Anatomy

Which of the following constitute the three parts of a tooth?

Possible Answers:

Crest, body, root.

Crown, neck, root.

Crown, stem, root.

Top, base, root.

Enamel, neck, maxilla.

Correct answer:

Crown, neck, root.

Explanation:

The three parts of a tooth are the crown, neck, and root. The crown is the part of the tooth visible above the gum line; it is covered with a very hard, white enamel. The neck is the constricted area just below the crown. The root below the neck is contained within the tooth socket, in the mandible or maxilla.

Example Question #382 : Gross Anatomy

What is the dental formula for a modern human adult?

Possible Answers:

2:3:3

2:2:1:3

2:1:2:3

2:1:3

2:1:3:2

Correct answer:

2:1:2:3

Explanation:

The dental formula for a modern human adult is 2:1:2:3 in each quadrant: two incisors, one canine, two premolars, and three molar, for a total of 32 adult teeth. There is some variation in this number, as the third molar (also known as the Wisdom Tooth) is not present in all modern human adults.

Example Question #383 : Gross Anatomy

There are __________ deciduous teeth in children, and __________ permanent teeth in adults.

Possible Answers:

22 . . . 32

18 . . . 34

20 . . . 32

22 . . . 30

20 . . . 30

Correct answer:

20 . . . 32

Explanation:

There are 20 deciduous teeth in children, and 32 permanent teeth in adults. In children, each quadrant is composed of 2 incisors, 1 canine, no pre-molars, and 2 molars. In adults, each quadrant is composed of 2 incisors, 1 canine, 2 premolars, and 3 molars. There is some variation in the adult number, as the third molar, or wisdom tooth, is not present in all individuals.

Example Question #384 : Gross Anatomy

The modern human adult dental formula is 2:1:2:3 per quadrant.

To what kind of teeth does the first '2' in the dental formula refer?

Possible Answers:

Molar

Wisdom tooth

Canine

Incisor

Premolar

Correct answer:

Incisor

Explanation:

The first '2' in the 2:1:2:3 modern human adult dental formula refers to incisors. There are two incisors in each of the four quadrants in adult modern humans, situated in the frontmost part of the dental arcade, for a total of eight of this type of tooth per individual. The wisdom tooth is the third molar and is not always present in all individuals nor in all quadrants.

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