Deck 6: The Skull

Question 1

The right and left maxillae help form all of the following except the __________.

A) upper face
B) orbital floor
C) lateral wall of the nasal cavity
D) floor of the oral cavity
E) floor of the nasal cavity

Answer 1

D
Floor of the oral cavity. The right and left maxillae help form the upper face, the infratemporal region, the orbital floor, the lateral wall of the nasal cavity, the floor of the nasal cavity, and the roof, not the floor, of the oral cavity.

Question 2

The __________ is bounded posteriorly by the paramedian dorsum sellae and by two oblique petrous temporal ridges and accommodates the hypophysis cerebri in the median plane and the temporal lobes of the brain laterally.

A) anterior cranial fossa
B) middle cranial fossa
C) posterior cranial fossa
D) crista galli
E) frontal crest

Answer 2

B
Middle cranial fossa. The middle cranial fossa is bounded posteriorly by the paramedian dorsum sellae and by two oblique petrous temporal ridges and accommodates the hypophysis cerebri in the median plane and the temporal lobes of the brain laterally.

Question 3

In the posterior cranial fossa, the __________ is a large, oval-shaped opening through which the spinal cord is continuous with the brainstem above.

A) petrosal sulcus
B) clivus
C) hypoglossal canal
D) foramen magnum
E) jugular foramen

Answer 3

D
Foramen magnum. The foramen magnum is a large, oval-shaped opening through which the spinal cord is continuous with the brainstem. It is in the posterior cranial fossa.

Question 4

All of the following are bones in the facial skeleton except the __________ bone.

A) sphenoid
B) nasal
C) lacrimal
D) vomer
E) zygomatic

Question 5

The ridge of bone that peaks upward in the median plane into the anterior cranial fossa and is attached to the falx cerebri is the _____________________________.

A) cribriform plate
B) crista galli
C) septal plate
D) uncinate process
E) superior concha

Question 6

The _________ bone is a small, thin bone with two surfaces and four borders that articulates with the maxilla, the ethmoid bone, the frontal bone, and the inferior concha.

A) nasal
B) lacrimal
C) vomer
D) palatine
E) zygomatic

Question 7

In the neurocranium, the _________ bone contributes to the forehead, the anterior cranial fossa, and the roof of the bony orbits.

A) occipital
B) temporal
C) sphenoid
D) parietal
E) frontal

Question 8

The _______ of the mandible is a roller-shaped process that articulates with the mandibular fossa of the temporal bone.

A) neck
B) condyle
C) body
D) coronoid process
E) mental foramen

Question 9

The bony sockets in the maxilla and mandible that support the teeth are the _________.

A) alveolar conchae
B) canine fossae
C) incisive fossae
D) zygomatic canals
E) alveolar processes

Question 10

The bone that is roughly diamond-shaped, with four borders and four angles, and that articulates with the frontal bone, sphenoid bone, temporal bone, and maxilla is the ________.

A) nasal bone
B) lacrimal bone
C) vomer
D) palatine bone
E) zygomatic bone

Question 11

Which of the following statements is NOT true?

A) There are 32 teeth in the complete adult dentition and 20 in a child's dentition.
B) The mental foramen of the mandible transmits the mental nerve and vessels.
C) The mental protuberance of the mandible is a triangular elevation of bone that forms the chin.
D) The upper jaw is fixed and contains a single bone, the maxilla.
E) The lower jaw is movable and contains a single bone, the mandible.

Question 12

There are four main functional cavities in the skull. They are __________________.

A) nasal, oral, maxillary, and orbital
B) neurocranial, orbital, oral, and nasal
C) nasal, oral, paranasal, and sinus
D) sinus, nasal, neurocranial, and maxillary
E) orbital, maxillary, sinus, and neurocranial

Question 13

The nasal bone articulates with the opposite nasal bone, the frontal bone, the maxilla, and the _________ bone.

A) vomer
B) zygomatic
C) palatine
D) occipital
E) ethmoid

Question 14

The ________ bone(s) help form the nasal cavity (lateral wall and floor), the oral cavity (posterior third of the hard palate), the pterygopalatine fossa, and the orbit (a portion of the posterior wall).

A) maxillae
B) mandible
C) palatine
D) sphenoid
E) vomer

Question 15

_________ is an anthropological landmark marked by the intersection of the sagittal and coronal sutures in the skull.

A) Bregma
B) Lambda
C) Nasion
D) Inion
E) Pterion

Question 16

The palatine bone articulates with the sphenoid bone, the ethmoid bone, the vomer, the opposite palatine bone, and the _____________________.

A) maxilla
B) temporal bone
C) occipital bone
D) parietal bone
E) mandible

Question 17

The mandible articulates with the _______ bone.

A) sphenoid
B) occipital
C) parietal
D) frontal
E) temporal

Question 18

The _________ bone contributes to the anterior cranial fossa, the middle cranial fossa, orbit, infratemporal roof, and roof and lateral wall of the nasal cavity. It fuses with the occipital bone after adolescence.

A) frontal
B) temporal
C) sphenoid
D) parietal
E) ethmoid

Question 19

Which of the following is NOT a bone of the neurocranium?

A) Frontal
B) Vomer
C) Parietal
D) Temporal
E) Occipital

Question 20

The __________ bone contributes to the anterior cranial fossa; the roof, lateral wall, and median septum of the nasal cavity; and the medial wall of the orbit.

A) sphenoid
B) occipital
C) frontal
D) ethmoid
E) temporal

Question 21

Which of the following bones have not fused yet as single bones in the neonatal skull?

A) Frontal
B) Mandible
C) Temporal
D) A and C
E) A, B, and C

Question 22

At birth, the mandible is separated into two halves by the ____________________.

A) interfrontal suture
B) retromolar fossa
C) symphysis menti
D) metopic suture
E) coronal suture