Bones of the Head (Skull)

Question 1

Frontal Bone

Answer 1

The frontal bone forms the front portion of the skull above the eyes and includes the forehead, the roof of the nasal cavity, and the roofs of the orbits (bony sockets) of the eyes.

Question 2

Supra-orbital Margin

Answer 2

Part of the Frontal bone of the skull. This is the superiorly arched margin of bone forming the superior border of the orbit. The upper curve of the bones that make up the eye socket

Question 3

Glabella

Answer 3

The smooth area between the eyebrows just above the nose.

Question 4

Coronal Suture

Answer 4

A seam extending across the skull where the frontal bone and the parietal bones meet.

Question 5

Parietal Bones

Answer 5

Either of two large, irregularly quadrilateral bones between the frontal and occipital bones that together form the sides and top of the skull.

Question 6

Sagital Suture

Answer 6

A serrated line on the top of the skull that marks the junction of the two parietal bones

Question 7

Squamous suture

Answer 7

The squamous suture is the connecting joint in the skull between the parietal bone and the lower portion of the temporal bone called the par squamosa

Question 8

Occipital Bone

Answer 8

A curved, compound bone forming the back and part of the base of the skull.

Question 9

External Occipital protuberance

Answer 9

Near the middle of the occipital squama is the external occipital protuberance

Question 10

Foramen Magnum

Answer 10

the large opening at the base of the skull through which the spinal cord passes

Question 11

occipital condyles

Answer 11

Your occipital condyles are two bony surfaces at the base of your skull. This is where your skull meets the first bone (vertebra) of your spine. Wings in front of the Foramen Magnum

Question 12

Lambdoid suture

Answer 12

) is a dense, fibrous connective tissue joint on the posterior aspect of the skull that connects the parietal bones with the occipital bone.

Question 13

Temporal Bone

Answer 13

The temporal bones are situated at the sides and base of the skull, and lateral to the temporal lobes of the cerebrum.

The temporal bone supports that part of the face known as the temple and houses the structures of the organ of hearing

Question 14

Mastoid Process

Answer 14

a conical prominence projecting from the undersurface of the mastoid portion of the temporal bone. It is located just behind the external acoustic meatus

Question 15

External acoustic meatus

Answer 15

is a tube running from the outer ear to the middle ear. The adult human ear canal

Question 16

Zygomatic Arch

Answer 16

or cheek bone is formed by the zygomatic process of temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic bone (the side of the cheekbone),

Question 17

Styloid Process

Answer 17

slender pointed piece of bone just below the ear. It projects down and forward from the inferior surface of the temporal bone

Question 18

Jugular foramen

Answer 18

The jugular foramen is a large aperture in the base of the skull. It is located behind the carotid canal and is formed in front by the petrous portion of the temporal, and behind by the occipital; it is generally larger on the right than on the left side.

Question 19

Mandibular Fossa

Answer 19

The mandibular fossa is the depression in the temporal bone that articulates with the mandibular condyle. under where the Zygomatic arch attaches to the temporal bone.

Question 20

Petrous

Answer 20

The petrous portion of the temporal bone or pyramid is pyramidal and is wedged in at the base of the skull between the sphenoid and occipital bones

Question 21

Zygomatic Bone

Answer 21

is situated at the upper and lateral part of the face and forms the prominence of the cheek, part of the lateral wall and floor of the orbit

Question 22

Maxilla

Answer 22

Upper Jaw Bone

Question 23

Alveolar Margin

Answer 23

denoting the part of the jawbone containing the roots of the teeth Both in the Maxilla and Mandible

Question 24

Palatine Process

Answer 24

, is a thick, horizontal process of the maxilla. It forms the anterior three-fourths of the hard palate, the horizontal plate of the palatine bone making up the rest

Question 25

inferior nasal concha

Answer 25

It extends horizontally along the lateral wall of the nasal cavity [Fig. 1] and consists of a lamina of spongy bone, curled upon itself like a scroll

Question 26

Palatine Bone

Answer 26

aired bones of the skull that are situated at the back part of the nasal cavity between the maxilla and the pterygoid process of the sphenoid. Looking at the upper jaw makes up 25% of hard palate. Located behind Palatine Process

Question 27

Vomer

Answer 27

vomer forms the posterior part of the nasal septum, with the anterior part formed by the ethmoid.

Question 28

Lacrimal Bone

Answer 28

, the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit

Question 29

Nasalacrimal Canal

Answer 29

The canal containing the nasolacrimal duct is called the nasolacrimal canal.

It is formed by indentations in the inferior nasal conchae, maxilla and lacrimal bone

Question 30

Sphenoid Bone

Answer 30

cranial bone situated at the front middle of the skull in front of the temporal bone and basilar part of the occipital bone. The sphenoid bone is one of the seven bones that articulate to form the orbit

Question 31

Optic Foramen

Answer 31

The optic foramen is the opening to the optic canal.

Question 32

Sella Turcica

Answer 32

is a saddle-shaped depression in the sphenoid bone of the human skull

Question 33

Ethmoid bone

Answer 33

s a bone in the skull that separates the nasal cavity from the brain. It is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that makes up the orbit of the eye.

Question 34

Cribriform Plate

Answer 34

The cribriform plate of the ethmoid bone (horizontal lamina) is received into the ethmoidal notch of the frontal bone and roofs in the nasal cavities.

Question 35

Crista Galli

Answer 35

he crista galli (Latin: “crest of the cock”) is a median ridge of bone that projects from the cribriform plate of the ethmoid bone.

Question 36

Perpendicular Plate (ethmoid)

Answer 36

a thin, flattened lamina, polygonal in form, which descends from the under surface of the cribriform plate, and assists in forming the septum of the nose;

Question 37

Middle Nasal Concha

Answer 37

the lower of two bony plates projecting from the inner wall of the ethmoid labyrinth

Question 38

Mandible

Answer 38

lower jawbone

Question 39

Body of Mandible

Answer 39

curved somewhat like a horseshoe the part of the Mandible that contains the teeth

Question 40

Mental Foramen

Answer 40

ne of two holes (“foramina”) located on the anterior surface of the mandible. Two holes located on either side of the front of the mandible

Question 41

Angle of Mandible

Answer 41

located at the posterior border at the junction of the lower border of the ramus of the mandible. Back of the lower jaw where it curve toward the ear.

Question 42

Ramus of the Mandible

Answer 42

a broad quadrilateral part of the mandible projecting upward from the posterior end of the body behind the lower teeth. line of the back of the jaw starting from the ramus

Question 43

Coronoid process

Answer 43

The triangular anterior process of the mandibular ramus, giving attachment to the temporal muscle.

Question 44

Mandibular Condyle

Answer 44

the condyle of the ramus of the mandible that joins with the skull

Question 45

paranasal sinuses

Answer 45

group of four paired air-filled spaces that surround the nasal cavity (maxillary sinuses), above the eyes (frontal sinuses), between the eyes (ethmoidal sinuses), and behind the ethmoids (sphenoidal sinuses). The sinuses are named for the facial bones in which they are located.