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Anatomy > Bones of the Axial Skeleton > Flashcards

Bones of the Axial Skeleton Flashcards

1
Q

Coronal Suture

A

Running in the coronal plane, occurs anteriorly where the parietal bones meet the frontal bone.

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2
Q

Squamous Suture

A

Occurs where each parietal bone meets a temporal bone inferiorly, on each lateral aspect of the skull

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3
Q

Sagittal Suture

A

occurs where the right and left parietal bones meet superiorly in the midline of the cranium.

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4
Q

Lambdoid Suture

A

occurs where the parietal bones meet the occipital bone posteriorly.

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5
Q

Anterior cranial fossa

A

holds the large front lobes of the brain

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6
Q

Frontal Bone

A

forms the forehead and the roofs of the orbits

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7
Q

Parietal bone

A

Forms most of the superior and lateral aspects of the skull

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8
Q

Occipital bone

A

Forms posterior aspect and most of the base of the skull

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9
Q

Occipital condyles

A

articulate with the atlas (first vertebra)

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10
Q

Foramen Magnum

A

allows passage of the spinal cord from the brain stem to the vertebral canal

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11
Q

External occipital protuberance

A

site of muscle of attachments

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12
Q

Temporal bone

A

Forms inferolateral aspects of the skull and contributes to the middle cranial fossa; has squamous, tympanic, an petrous parts.

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13
Q

Styloid process

A

attachment site for several neck and tongue muscles and for a ligament to the hyoid bone.

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14
Q

Mastoid process

A

attachment site for several neck muscles

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15
Q

External acoustic meatus

A

canal leading from the external ear to the eardrum

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16
Q

Zygomatic process

A

contributes to the zygomatic arch, which forms the prominence of the cheek.

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17
Q

Sphenoid bone

A

Keystone of the cranium; contributes to the middle cranial fossa and orbites; main parts are the body, greater wings, lesser wings, and pterygoid processes.

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18
Q

Optic Canals

A

Passageway for cranial nerve II and the ophthalmic arteries

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19
Q

Superior orbital fissures

A

Passageway for cranial nerves III, IV, VI, part of V, and ophthalmic vein.

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20
Q

Sella Turcica

A

the seat for the pituitary gland.

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21
Q

Ethmoid bone

A

Small contribution to the anterior cranial fossa; forms part of the nasal septum and the lateral walls and roof of the nasal cavity; contributes to the medial wall of the orbit.

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22
Q

Cribriform plates

A

passageway for filaments of the olfactory nerves

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23
Q

Crista galli

A

attachment point for the falx cerebri, dural membrane fold.

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24
Q

Vomer

A

Inferior part of the nasal septum

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25
Q

Maxilla

A

Keystone bones of the face; form the upper jaw and parts of the hard palate, orbits, and nasal cavity walls

26
Q

Inferior Nasal Conchae

A

from part of the lateral walls of the nasal cavity

27
Q

Frontal process

A

forms part of lateral aspect of bridge of nose

28
Q

Alveoli

A

Sockets of teeth

29
Q

Palatine

A

forms the anterior hard plate and a small part of nasal cavity and orbit walls

30
Q

Zygomatic

A

Form the cheek and part of the orbit

31
Q

Nasal

A

Form the bridge of the nose

32
Q

Lacrimal

A

Form part of the medial orbit wall

33
Q

Mandible

A

The lower jaw

34
Q

Hyoid

A

lies just inferior to the mandible in the anterior neck.

35
Q

Jugular foramen

A

passageway for the internal jugular vein and cranial nerves.

36
Q

Inferior Orbital Fissure

A

Passageway for maxillary branch of cranial nerve V, the zygomatic nerve, and blood vessel.

37
Q

Pedicle

A

are short,, bony walls that project posteriorly from the vertebral body and form the sides of the arch.

38
Q

Transverse Foramen

A

vertebral blood vessels pass through this hole in each transverse process

39
Q

C1

A

lacks a body and a spinous process

40
Q

C2

A

has a body and a spinous process, and other typical vertebral processes.

41
Q

Transverse Costal Facets

A

these articulate with the tubercles of the ribs

42
Q

Superior Costal Facet

A

lies at the superior edge

43
Q

Inferior Costal Facet

A

lies at the inferior edge

44
Q

Sacrum

A

shapes the posterior wall of the pelvis

45
Q

Coccyx

A

Or tailbone, is a small and triangular.

46
Q

Sternum

A

lies in the anterior midline of the thorax

47
Q

Manubrium,

A

the superior section, is shaped like the knot in a necktie of the sternum

48
Q

Body

A

or mid-portion, makes up the bulk of the sternum

49
Q

Xiphoid process

A

forms the inferior end of the sternum

50
Q

Ribs

A

There are 12 pairs that form the flaring sides of the thoracic cage.

51
Q

Clavicles

A

or collarbones, are slender, S-shaped bones that extend horizontally across the superior thorax on the anterior surface.

52
Q

Scapula

A

Or shoulder blades, are thin, triangular flat bones located on the dorsal surface of the rib cage, between rib 2 superiorly and rib 7 inferiorly.

53
Q

Glenoid Cavity

A

This cavity articulates with the humerus, forming the shoulder joint

54
Q

Acromion

A

Articulates with the acromial end of the clavicle

55
Q

Coracoid Process

A

projects anteriorly from the lateral part of the superior scapular border.

56
Q

Supraspinous and Infraspinous Fossa

A

lie superior and inferior to the scapular spine

57
Q

Subscapular Fossa

A

is the shallow concavity formed by the entire anterior surface of the scapula.

58
Q

Humerus

A

is the only bone of the arm.

59
Q

Radius

A

is thin at its proximal end and widened at its distal end–the opposite of the ulna

60
Q

Ulna

A

slightly longer than the radius, is the main bone forming the elbow joint with the humerus.

Anatomy (7 decks)

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