Bone Module Flashcards
Cranium + mandible?
Skull
Viscero-cranium is comprised of bones that form the _______ skeleton.
Facial
Splancho-cranium are those bones that are formed in ___________ ossification model.
intramembranous
Chondro-cranium are the bones formed in _____-______ ossification model.
endo-chondral
Calvaria, the roof of the cranium, is mainly formed by what two bones?
Frontal and parietal
Junction of sagittal and coronal sutures is called ____/_______ fontanel, and junction of sagittal and lambdoid sutures is called ______/_____ fontanel.
bregma/anterior fontanel; lambda/posterior fontanel
What 3 things is the anterior cranial fossa formed by?
- Frontal bone
- Lesser wings of sphenoid
- Cribriform plate
What 2 things is the middle cranial fossa formed by?
- Greater wings of sphenoid
2. Temporal bones
What 2 things is the posterior cranial fossa formed by?
- Temporal bones
2. Occipital bone
What are the two facets on the head of a rib for?
Articulation with vertebral body and vertebra immediately above rib
What is the tubercle facet on a rib for?
Articulation with the transverse process of corresponding vertebra
The groove for the subclavian vein is (medial/lateral) to the groove for the subclavian artery.
Medial
What 3 bones does the manubrium stern articulate with?
- Clavicles
- First rib
- Upper part of second costal cartilage
What ribs articulate with the body of the sternum?
2-7
The xiphoid process divides the ________ angle to left and right halves.
infrasternal
How many vertebra does the cervical spine have?
7
How many vertebra does the thoracic spine have?
12
How many vertebra does the lumbar spine have?
5
How many vertebra does the sacral spine have?
5
How many vertebra does the coccyx have?
4
What are the 4 spinal curvatures?
- Cervical lordosis
- Thoracic kyphosis
- Lumbar lordosis
- Sacral kyphosis
What are the 5 common features of cervical vertebrae?
- Small quadrangular body
- Triangular vertebral foramen
- Transverse foramen
- Bifurcated spinous process
- Lateral and anterior lips (uncinate process)
What two transverse vertebrae lack demi-facets on their transverse processes for articulation with tubercles of ribs?
T11 and T12
What do the 4 posterior sacral foramina provide passage for?
Posterior rami of S1-S4
What doe the 4 foramina on the anterior surface of the sacrum provide passage for?
Anterior rami of S1-S4
The sacral foramina are connected together by transverse ridges that represent the remnant of __________ ______.
intervertebral discs
The anterior border of the sacral Ala contribute to the formation of what inlet?
Pelvic (superior aperture)
The fusion of the 5th lumbar vertebra with S1 is known as __________.
sacralization
The failure of fusion of S1 to the rest of the sacral segments is called ____________.
lumbarization
The two processes arising from the first coccygeal segment toward the sacrum are known as the coccygeal ______.
Cornue
The carotid canal is medial to what process on the temporal bone?
styloid process
The head of a rib has two facets for articulation with the numerically corresponding vertebral body and that of the vertebra immediately ________.
Above
The tubercle of the rib has a facet for articulation with the ______ ______ of the corresponding vertebra.
transverse process
What rib(s) only have one articular surface on their head for the corresponding thoracic vertebra?
Rib 1, rib 11 and rib 12
What is the inter-vertebral foramen formed by?
The zygapophyseal joint, inferior and superior notches of vertebrae, intervertebral disc and body of vertebrae
What two components form the IV disc?
- Nucleus pulposus
2. Anulus fibrosus
What is the main chemical component of the nucleus pulpous?
Hyaluronic acid
What is the shape of the cervical vertebrae foramen?
triangular
What joint is unique to the cervical spine?
Unco-vertebral joint
What is the shape of the articular process for the occipital condyles on C1? For C2?
oval; round
Is the anterior or posterior arch larger on C1?
Posterior
Where is the accessory process located on the lumbar vertebrae?
base of the posterior surface of the transverse process
Where is the mammilary process located on the lumbar vertebrae?
posterior margin of the superior articular process