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 #31 : Identifying Bones Of The Skull

What is the name of the region in the skull where the frontal, parietal, temporal, and sphenoid bones meet?

Possible Answers:

Pterion

Bregma

Inion

Fabella

Glabella

Correct answer:

Pterion

Explanation:

The pterion is the region where these four bones meet. The glabella refers to the part of the frontal bone between the superciliary arches. The bregma is where the coronal and sagittal sutures intersect. The fabella is a sesamoid bone found in the tendon of the lateral head of the gastrocnemius, whose presence is variable. The inion is the most prominent part of the external occipital protuberance

Example Question #32 : Identifying Bones Of The Skull

The spinal cord leaves the skull base at what opening?

Possible Answers:

Foramen magnum

Fontanelle 

Sesamoid opening

Obturator foramen

Capitate

Correct answer:

Foramen magnum

Explanation:

The foramen magnum is a large opening in the occipital bone of the human skull. It is one of several foramina (oval or circular openings) in the skull. The spinal cord, an extension of the medulla, passes through the foramen magnum as it exits the cranial vault. Additionally, vertebral arteries, the anterior and posterior spinal arteries, the spinal component of the accessory nerve, and the alar ligaments also pass through the foramen magnum. Fontanelles are soft spots between the skull bones, which will harden as the infant ages. The capitate is the largest of the eight carpal bones of the wrist. A sesamoid bone is one that is embedded within a tendon or muscle. The obturator foramen is the large hole in the pelvis through which nerves, arteries, blood vessels, and lymphatic vessels pass.

Example Question #33 : Identifying Bones Of The Skull

Which of the following forms the lower jaw and holds the lower teeth in place?

Possible Answers:

Zygomatic bone

Manubrium

Maxilla

Mandible

Sphenoid bone

Correct answer:

Mandible

Explanation:

The mandible is the lowest bone in the face in humans, forming the lower jaw and holding the lower teeth in place. It is commonly known as the jawbone. The manubrium is the superiormost bone in the sternum. The maxilla holds the upper teeth in place.

Example Question #34 : Identifying Bones Of The Skull

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

Possible Answers:

Mandible

Sphenoid bone

Lacrimal bone

Frontal bone

Ethmoid bone

Correct answer:

Lacrimal bone

Explanation:

The lacrimal bone is a small, paired bone situated at the front part of the medial wall of the orbit, assisting with tear translocation. The frontal, sphenoid, and ethmoid bones and the mandible are all single bones.

Example Question #32 : Identifying Bones Of The Skull

Which of the following is not a bone of the human cranium?

Possible Answers:

Vomer bone

Ethmoid bone

Sphenoid bone

Os coxa

Palatine bone

Correct answer:

Os coxa

Explanation:

The os coxa, commonly referred to as the hip bone, is not a bone of the human cranium. The palatine, vomer, and ethmoid bone, as well as the sphenoid, all constitute parts of the human cranium.

Example Question #35 : Identifying Bones Of The Skull

Which of the following bones of the human cranium form, when joined together, the sides and roof of the cranium?

Possible Answers:

Occipital bones

Parietal bones

Zygomatic bones

Frontal bones

Temporal bones

Correct answer:

Parietal bones

Explanation:

When joined together, the parietal bones form the sides and roof of the cranium. There is only one frontal bone and one occipital bone. The zygomatic bones (cheekbones) are on the anterior aspect of the skull.

Example Question #36 : Identifying Bones Of The Skull

Which of the following is the relatively small, butterfly-shaped bone of the human cranium, situated in the middle of the skull, in front of the temporal bone?

Possible Answers:

Sphenoid

Vomer bone

Parietal bone

Lacrimal bone

Occipital bone

Correct answer:

Sphenoid

Explanation:

The sphenoid is the relatively small, butterfly-shaped bone situated in the middle of the skull, in front of the temporal bone. There are many foramina in the sphenoid bone and its intricacies should be studied closely. The vomer is one of two bones that make up the nasal septum.

Example Question #37 : Identifying Bones Of The Skull

Which of the following is a small, unpaired bone of the human cranium, located along the midsagittal line, and articulating with the sphenoid, the ethmoid, and the palatine and maxillary bones?

Possible Answers:

Maxilla

Zygomatic bone

Manubrium

Nasal bone

Vomer bone

Correct answer:

Vomer bone

Explanation:

The vomer bone is a small, unpaired bone of the human cranium, located along the midsagittal line. It articulates with the sphenoid, the ethmoid, and the palatine and maxillary bones. The vomer, along with the perpendicular plate of the ethmoid bone, makes up the nasal septum.

Example Question #38 : Identifying Bones Of The Skull

Which of the following cranial bones, when paired, form the upper jaw and palate of the mouth?

Possible Answers:

Maxilla

Mandible

Frontal bone

Sphenoid bone

Zygomatic bone

Correct answer:

Maxilla

Explanation:

The maxillae form the upper jaw and palate of the mouth. The palatine bone also makes up the hard palate (roof) of the mouth, but it is a single bone, not a pair. The mandible is the lower jaw bone, and is also unpaired.

Example Question #37 : Identifying Bones Of The Skull

Which of the following are two small oblong bones of the human cranium that form the "bridge" of the nose?

Possible Answers:

Temporal bones

Maxillae

Zygomatic bones

Nasal bones

Sphenoid bone

Correct answer:

Nasal bones

Explanation:

The nasal bones are two small oblong bones that form the "bridge" of the nose. They tend to vary in size and shape in different individuals.

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