Anatomy Quiz

Front 1

Frontal bone

Back 1

Anterior portion of the cranium. Forms the forehead, superior parts of the orbit and floor of anterior cranial fossa

Front 2

Supraorbital foramen(notch)

Back 2

Opening above each orbit allowing blood vessels and nerves to pass

Front 3

Glabella

Back 3

Smooth area between the eyes

Front 4

Parietal bone

Back 4

Posterolateral to the frontal bone, forming sides of cranium

Front 5

Sagittal suture

Back 5

Midline articulation point of the two parietal bones

Front 6

Coronal suture

Back 6

Point of articulation of parietals with frontal bone

Front 7

Temporal bone

Back 7

Inferior to parietal bone on lateral skull.

Front 8

Squamous region

Back 8

Borders the parietals

Front 9

Tympanic region

Back 9

Surrounds the external ear opening

Front 10

Petrous region

Back 10

Forms lateral portion of the skull base and contains the mastoid process

Front 11

Squamous suture

Back 11

Point of articulation of the temporal bone with the parietal bone

Front 12

Zygomatic process

Back 12

Bridge like projection joining the zygomatic bone(cheekbone) anteriorly

Front 13

Mandibular fossa

Back 13

Rounded depression on the inferior surface of the zygomatic process. Forms the socket for the condylar process of the mandible. Where the Mandibular joins the cranium

Front 14

External acoustic meatus

Back 14

Canal leading to eardrum and middle ear

Front 15

Styloid procesa

Back 15

Needle like projection inferior to external acoustic meatus. Attachment point for muscles and ligaments of the neck

Front 16

Jugular foramen

Back 16

Opening medial to the Styloid process through which the internal jugular vein and cranial nerves IX, X, and XI pass

Front 17

Carotid canal

Back 17

Opening medial to the Styloid process through which the internal carotid artery passes into the cranial cavity

Front 18

Internal acoustic meatus

Back 18

Opening on posterior aspect of temporal bone allowing passage of cranial nerves VII and VIII

Front 19

Foramen lacerum

Back 19

Jagged opening between the petrous temporal bone and sphenoid providing passage for a number of small nerves and for the internal carotid artery to enter the middle cranial fossa

Front 20

Stylomastoid foramen

Back 20

Tiny opening between the mastoid and Styloid processes through which cranial nerve VII leaves the cranium

Front 21

Mastoid process

Back 21

Rough projection inferior and posterior to external acoustic meatus. Attachment site for muscles

Front 22

Occipital bone

Back 22

Most posterior bone of cranium-forms floor and back wall. Joins sphenoid bone anteriorly via its narrow basilar part

Front 23

Lambdoid suture

Back 23

Site of articulation of occipital bone and parietal bones

Front 24

Foramen Magnum

Back 24

Large opening in base of occipital, which allows the spinal cord to join with the brain

Front 25

Occipital condyles

Back 25

Rounded projections lateral to the foramen magnum that articulate with the first cervical vertebra

Front 26

Hypoglossal canal

Back 26

Opening medial and superior to the occipital condyle through which the Hypoglossal nerve passes

Front 27

Sphenoid bone

Back 27

Bat shaped bone forming the anterior plateau of the middle cranial fossa across the width of the skull. The keystone of the cranium because it articulates with all other cranial bones

Front 28

Greater wings

Back 28

Portions of the sphenoid seen exteriorly anterior to the temporal and forming a part of the eye orbits

Front 29

Pterygoid processes

Back 29

Inferiorly directed trough-shaped projections from the junction of the body and the greater wings

Front 30

Superior orbital fissures

Back 30

Jagged opening in orbits providing passage for cranial nerves III,IV, V and VI to enter the orbit where they serve the eye

Front 31

Sella turcica

Back 31

Saddle-shaped region in the sphenoid midline.

Front 32

Hypophyseal fossa

Back 32

Seat of sella turcica that surrounds the pituitary

Front 33

Lesser wings

Back 33

Bat-shaped portions of the sphenoid anterior to the sella turcica

Front 34

Foramen rotundum

Back 34

Opening lateral to the sella turcica providing passage for a branch of fifth cranial nerve

Front 35

Foramen ovale

Back 35

Opening posterior to the sella turcica that allows passage of a branch of the fifth cranial nerve

Front 36

Foramen spinosum

Back 36

Opening lateral to the foramen ovals through which the middle meningeal artery passes

Front 37

ethmoid bone

Back 37

Irregularly shaped bone anterior to the sphenoid. Forms the roof of the nasal cavity, upper nasal septum and part of the medial orbit walls

Front 38

Crista galli

Back 38

Vertical projection providing point of attachment for the dura mater, helping to secure the brain within the skull

Front 39

Cribriform plates

Back 39

Bony plates lateral to the crista galli through which the olfactory fibers pass to the brain from the nasal mucosa through the cribriform formina

Front 40

Perpendicular plate

Back 40

Inferior projection of the ethmoid that forms the superior part of the nasal septum

Front 41

Lateral masses

Back 41

Irregularly shaped and thin-walled bony regions flanking the perpendicular plate laterally.

Front 42

Orbital plates

Back 42

Lateral surfaces that shape part of the medial orbit wall

Front 43

Superior and middle nasal conchae

Back 43

Thin, delicately coiled plates of bone extending medically from the lateral masses of the ethmoid into the nasal cavity.

Front 44

Mandible

Back 44

Lower jawbone, which articulates with the temporal bones in the only freely movable joints of the skull

Front 45

Mandibular body

Back 45

Horizontal portion; forms the chin

Front 46

Mandibular Ramus

Back 46

Vertical extension of the body on either side

Front 47

Condylar process

Back 47

Articulation point of the mandible with the Mandibular fossa of the temporal bone

Front 48

Coronoid process

Back 48

Jutting anterior portion of the Ramus; site of muscle attachment

Front 49

Mandibular angle

Back 49

Posterior point at which Ramus meets the body

Front 50

Mental foramen

Back 50

Prominent opening on the body that transmits the mental blood vessels and nerve to the Lower jaw

Front 51

Mandibular foramen

Back 51

Open the jaw of the skull to identify this prominent foramen on the medial aspect of the Mandibular foramen. Permits passage of the nerve involved with tooth sensation and is the site where the dentist injects Novocain

Front 52

Alveolar process

Back 52

Superior margin of mandible; contains sockets in which the teeth lie

Front 53

Maxillae

Back 53

Two bones fused in a median suture; form the upper jawbone and part of the orbits. All facial bones, except the mandible, join the maxillae. Main, keystone, bones of the face

Front 54

Palatine processes

Back 54

Form the anterior hard palate; meet medially in the inter maxillary suture

Front 55

Alveolar process

Back 55

Inferior margin containing sockets in which teeth lie

Front 56

Infra orbital foramen

Back 56

Opening under the orbit carrying the infra orbital nerves and blood vessels to the nasal region

Front 57

Lacrimal bone

Back 57

Fingernail-sized bones forming a part of the medial orbit walls between the maxilla and the ethmoid.

Front 58

Lacrimal fossa

Back 58

Opening in the lacrimal bone which serves as a passageway for tears

Front 59

Palatine bone

Back 59

Paired bones posterior to the palatine processes; form posterior hard palate and part of the orbit; meet medially at the median palatine suture

Front 60

Zygomatic bone

Back 60

Lateral to the maxilla; forms the portion of the face commonly called the cheekbone, and forms part of the lateral orbit.

Front 61

Nasal bone

Back 61

Small rectangular bones forming the bridge of the nose

Front 62

Vomer

Back 62

Blade-shaped bone in median plane of nasal cavity that forms the posterior and inferior nasal septum

Front 63

Inferior nasal conchae

Back 63

Thin curved bones protruding medially from the lateral walls of the nasal cavity; serve the same purpose as the turbinate portions of the ethmoid bone

Front 64

Paranasal sinuses

Back 64

Maxillary, sphenoid, ethmoid and frontal
Lighten the facial bones and may act as a resonance chambers for speech. Largest is maxillary

Front 65

Hyoid bone

Back 65

Not considered a skull bone; located in the throat above the larynx. Point attachment for many tongue and neck muscles. Does not articulate with any other bone. Horseshoe shaped with a body and two pairs of horns

Front 66

Vertebral column

Back 66

Extending from the skull to the pelvis, forms the body's major axial support; supports and protects the delicate spinal cord while allowing the spinal nerves to emerge from the cord via opening between adjacent vertebrae

Front 67

Vetebrae

Back 67

24 single bones in the vertebral column and two composite or fused bones

Front 68

Intervertebral discs

Back 68

Fibrocartilage that cushion the vertebrae and cushion shocks

Front 69

Typical vertebra

Back 69

-

Front 70

Body(centrum)

Back 70

Rounded central portion of the vertebra, which faces anteriorly in the human vertebral column

Front 71

Vertebral arch

Back 71

Composed of pedicles, laminae and a spinous process, it represents the junction of all posterior extensions from the vertebral column

Front 72

Vertebral(spinal) foramen

Back 72

Opening enclosed by the body and vertebral arch; a passageway for the spinal cord

Front 73

Transverse processes

Back 73

Two lateral projections from the vertebral arch

Front 74

Spinous process

Back 74

Single medial and posterior projection from the vertebral arch

Front 75

Articular processes

Back 75

Paired projections lateral to the vertebral foramen that enable articulation with adjacent vertebrae

Front 76

Superior articular process

Back 76

Typically face toward the spinous process (posteriorly)

Front 77

Inferior articular process

Back 77

Face (anteriorly) away from the spinous process

Front 78

Intervertebral foramen

Back 78

Right and left pedicles have notches on their inferior and superior surfaces that create openings, the intervertebral foramina, for spinal nerves to leave the spinal cord between adjacent vertebrae

Front 79

Cervical vertebrae

Back 79

Seven that form the neck portion of the vertebral column
Atlas: lacks a body and it's lateral processes contain large concave depression on their superior surfaces that receive the occipital condyles of the skull
Axis: acts as a pivot for the rotation of the atlas. Dens(odontoid process) serves pivot point

Front 80

Thoracic vertebrae

Back 80

12. Have a heart shaped body with two small articulating surfaces, costal facets, on each side close to the origin of the vertebral arch

Front 81

Lumbar vertebrae

Back 81

5. Massive block like bodies and short, thick, hatchet shaped spinous processes extending directly backward

Front 82

Sacrum

Back 82

Composite bone formed when the fusion of five vertebrae. Superiorly articulates with L5 and inferiorly it connects with the coccyx

Front 83

Median sacral

Back 83

Remnant of the spinous processes of the fused vertebrae

Front 84

Sacral formina

Back 84

Located at the either end of the ridges of the sacrum. Allow blood vessels and nerves to pass

Front 85

Sacral canal

Back 85

Where the vertebrae canal continues inside the sacrum

Front 86

Sacral hiatus

Back 86

Enlarged opening near the coccyx where the sacral canal ends

Front 87

Sacral promontory

Back 87

Anterior border of the body of S1 which is an important anatomical landmark for obstetricians

Front 88

Coccyx

Back 88

Formed from the fusion of three to five small irregularly shaped vertebrae. The human tailbone

Front 89

Sternum

Back 89

Typical flat bone and is the result of the fusion of three bones- manubrium, body and xiphroid process

Front 90

Manubrium

Back 90

Attached to the first seven pairs of ribs that looks like the knot of a tie. Articulates with the clavicle laterally

Front 91

Body

Back 91

Forms the bulk of the sternum

Front 92

Xiphroid process

Back 92

Constructs the inferior end of the sternum and lies at the level of the fifth intercostal space

Front 93

Jugular notch

Back 93

Concave upper border of the manubrium that is at the level of the third thoracic vertebrae

Front 94

Sternal angle

Back 94

Result of manubrium and body meeting at a slight angle to each other, so that a transverse ridge is formed at the level of the second ribs. Proxies a way to count the ribs

Front 95

Ribs

Back 95

12 pairs of ribs from the thoracic cage

Front 96

True( vertebrosternal) ribs

Back 96

First seven ribs that attach directly to the sternum by their own costal cartilages

Front 97

False ribs

Back 97

Next five pairs. Attach indirectly to the sternum or entirely lack a sternal attachment

Front 98

Vertebrochondral ribs

Back 98

Rib pairs 8-10 that have indirect cartilage attachments to the sternum via the costal cartilage of rib 7

Front 99

Floating ribs

Back 99

Last two pairs that have no sternal attachment

Front 100

Fontanelles

Back 100

Fibrous membranes that connect skull bones

Front 101

Carotid canal

Back 101

Located in temporal
Passage for internal carotid artery

Front 102

Cribriform formina

Back 102

Located in ethmoid
Passage for olfactory nerve

Front 103

Foramen magnum

Back 103

Located in occipital
Passage for spinal cord

Front 104

Foramen ovale

Back 104

Located in sphenoid
Passage for Mandibular branch of trigeminal and accessory meningeal artery

Front 105

Foramen rotundum

Back 105

Located sphenoid
Passage for maxillary branch of trigeminal

Front 106

Hypoglossal canal

Back 106

Located occipital
Passage for Hypoglossal nerve

Front 107

Internal acoustic meatus

Back 107

Located petrous portion of temporal
Passage for vestibularcochlear nerve

Front 108

Infraorbital foramen

Back 108

Located maxillae
Passage for internal jugular vein

Front 109

Optic foramen

Back 109

Located sphenoid
Passage for optic nerve 11

Front 110

Lambdoid suture

Back 110

Site of articulation of occipital bone and parietal bones