Anatomy Bone - Ex 9-11

iliac crest (ilium)

what is 1?; superior ridge of the ilium; site to obtain donated bone marrow

ala (ilium)

what is 2?; (also called the wing of the ilium) is the large, upper, fan-shaped portion of the hip bone that forms the lateral wall of the false pelvis

posterior superior iliac spine

what is 3?; posterior end of the iliac crest

posterior inferior iliac spine

what is 4?; projection below the PSIS on the posterior ilium

greater sciatic notch (ilium)

what is 5?; sciatic nerve passes through

anterior superior iliac spine

what is 6?; anterior end of the iliac crest

anterior inferior iliac spine

what is 7?; projection below the ASIS on the anterior ilium

ischial spine

what is 8?; a pointed bony projection on the back border of the ischium bone in the pelvis, obstetric landmark

acetabulum of coxal bone

what is 9?; socket formed by all three coxal parts; head of the femur articulates here

lesser sciatic notch (ischium)

what is 10?; notch below the ischial spine

superior ramus (pubis)

what is 11?; superior branch of pubis

obturator foramen (ischium & pubis)

what is 12 & 21 (same structure)?; large opening formed by only the pubis and ischium

inferior ramus (pubis)

what is 13?; inferior branch of the pubis

pubic tubercle

what is 14?; small bump on the superior ramus near the pubic symphysis

ischial tuberosity

what is 15?; obstetric landmark, a pointed bony projection on the back border of the ischium bone in the pelvis

ischial ramus

what is 16?; part of the ischium that joins the inferior ramus of the pubis

iliac fossa

what is 17?; a large, smooth, and concave depression on the inner surface of the hip bone

auricular surface (ilium)

what is 18?; ear-shaped articular area on the inner (medial) surface of the hip bone that connects with the sacrum to form the sacroiliac joint

arcuate line (ilium)

what is 19?; ridge on the inner ilium forming part of the pelvic brim

articular surface (pubic symphysis)

what is 20?; where the two pubic bones meet at the midline

frontal bone

makes up the forehead and upper part of eye sockets

supraorbital margin

superior rim of orbit (eyes)

supraorbital foramen (notch)

opening in the supraorbital margin for the supraorbital nerves & vessels

glabella

smooth area b/w the eyebrows

frontal sinus

What is the Blue region ? (cavity in frontal bone above eyes)

parietal bone

top of the head

coronal suture

joins frontal & parietal bones

squamous suture

joins parietal & temporal bones

lambdoid suture

joins parietal & occipital bones

sagittal suture

occipital bone

back of head

external occipital protuberance

midline bump on the back of the skull

external occipital crest

midline ridge running from protuberance toward the foramen magnum

superior nuchal line

ridge extending laterally from protuberance (attachment for neck muscle)

inferior nuchal line

ridge below the superior nuchal line (attachment for neck muscle)

occipital condyle

articulates w/ C1 (atlas)

foramen magnum

large opening where the spinal cord leaves the skull

hypoglossal canal

for hypoglossal nerve; under occipital condyles (need to tilt to be visible)

temporal bone

sides of head

squamous region

thin, flat, platelike part of the temporal bone

zygomatic process

projects forward to help form zygomatic arch

mandibular fossa

articulates w/ mandibular condyle of the mandible

external acoustic meatus

ear canal opening

styloid process

slender spike below the ear canal

mastoid process

middle ear infection can spread here (mastoiditis), then to meninges (meningitis); sternocleidomastoid attaches here

jugular foramen

internal jugular vein, CN XI, CN X, CN IX

internal acoustic meatus

CN VIII , CN VII

foramen lacerum

jagged opening at base of the skull b/w the temporal, sphenoid and occipital bones

carotid canal

internal carotid artery

sphenoid bone

complex, butterfly-shaped bone located at the middle base of the skull

lesser wings

thin wings forming part of the anterior cranial floor and eyes

greater wings

large lateral wings forming part of the cranial floor and eyes

optic canal

optic nerve (CN II)

superior orbital fissure

CN III, CN IV, CN VI, ophthalmic branch of CN V

foramen rotundum

maxillary branch of trigeminal nerve (CN V)

foramen ovale

mandibular branch of trigeminal nerve (CN V)

foramen spinosum

smaller opening in the greater wing, posterior and lateral to foramen ovale

sella turcica

saddle-shaped depression; contains hypophyseal fossa

anterior clinoid processes

anterior projections of the sella turcica region

posterior clinoid processes

posterior projections flanking the sella turcica

tuberculum sellae

ridge forming the anterior edge of the sella turcica

dorsum sellae

ridge forming the posterior wall of the sella turcica

hypophyseal fossa

pituitary gland (hypophysis)

pterygoid processes

downward projections from the sphenoid; each has a lateral and medial plate

lateral plates (pterygoid)

_______ plate of the pterygoid process

medial plates (pterygoid)

______ plate of the pterygoid process

sphenoid body

central part of the sphenoid; houses the sphenoidal sinus

sphenoidal sinus

What is the Yellow region ? (cavity within the sphenoid body)

ethmoid bone

cube-shaped bone in the skull that separates the nasal cavity from the brain and helps form the eye sockets

crista galli

site of attachment of the dura mater (the bump that protruding out of the plate)

cribriform plate

The blue star (perforated plate forming part of the roof of the nasal cavity)

olfactory foramina

olfactory nerves (CN I)

lateral masses

side portions of the ethmoid; contain the ethmoidal sinuses

ethmoidal sinus

What is the Green region ? (air cells within the lateral masses)

superior nasal concha

upper scroll-like projection in the nasal cavity

middle nasal concha

middle scroll-like projection in the nasal cavity

perpendicular plate

forms the upper half of the bony nasal septum

mandibular condyle

articulates w/ the mandibular fossa of the temporal bone

mandibular notch

concave notch b/w the condylar and coronoid processes

coronoid process

anterior projection of the ramus

mandibular ramus

masseter attaches here; spastic masseter is an early sign of tetanus; parotid gland sits superficial to the masseter (mumps = parotid infection)

mandibular angle

corner where the ramus meets the body

mandibular body

horizontal, curved part of the mandible holding the teeth

mental foramen

opening on the anterior body of the mandible (chin)

alveolar margin

ridge of the mandible containing the tooth sockets

mandibular foramen

mandibular branch of CN V; where dentists inject Novocain for lower teeth

frontal process (of maxillary)

w/ lacrimal bone, forms lacrimal fossa (lacrimal sac sits here)

inferomedial orbital margin

lower medial rim of the orbit

infraorbital foramen

opening below the orbit

zygomatic process

articulates w/ zygomatic bone

alveolar margin

ridge containing the upper tooth sockets

palatine process

forms the anterior 2/3 of the hard plate

incisive fossa

depression behind the incisors on the hard palate

maxillary sinus

What is the Pink region ? (largest paranasal sinus, within the maxilla)

inferolateral orbital margin

lower lateral rim of the orbit

temporal process

joins the zygomatic process of the temporal bone (zygomatic arch)

frontal process (of zygomatic)

articulates w/ the frontal bone

maxillary process (of zygomatic)

articulates w/ the maxilla

nasal bones

small paired bones forming the bridge of the nose

lacrimal fossa

with the frontal process of the maxilla, seats the lacrimal sac