The Skeletal System II: Axial Skeleton Flashcards
Does the vertebral column consist of C?-C?
T?-T?
L?-L?
C1-C7
T1-T12
L-1-L5
The bones of the upper and lower limbs, the pectoral girdle, and the pelvic girdle form the
Appendicular Skeleton
The cranial bones of the skull consist of (5)
(Back) Occipital Bone Parietal Bone Frontal Bone Temporal Bone (Front) Ethmoid Bone
Breast Bone Superior to inferior (3)
1/ Manubrium
2/ body
3. Xiphoid Process
A hole through a bone that allows pasage for nerves and blood vessls is called
Foramen
The strong, immovable joint betwwen the auricular surface of the sacrum and the hip bone is the
sacroiliac
The Fontanels are (4)
soft spot in the skull of an infant, covered with tough, fibrous membrane
- Anterior
- Mastoid
- Sphenoid
- Posterior
The two skull bones that form most of the cranial rood and part of the walls are the
parietal bone
How many pairs of ribs are there?
12 pairs
What are the two functions of the ribs?
- To protect the thoracic organs
2. To protect the liver, kidney, and spleen
How many cranial bones are found in the skull?
8 cranial bones
What is the structure that connects the frontal bone to the parietal bone?
Coronal Suture
The opening between the pedicles of the two successive vertenrae that allowes for the passage of nerves is
intervertebral foramen
Name the three auditory ossicles. (3)
Middle Ear smallest Bone 1 malleus (“hammer”) 2 incus (anvil) 3 stapes (stirrup).
What are the compnents of the thoracic cage? (3)
- Thoracic vertebrae
- Sternum
- Ribs
Within the vetebral column, a cartiagenous pad consisting of an iinner gelantinous nucleus sorrinded by a ring of fibrocartillage is called the
Intervertebral disc
What are the names of the vertebral curvatures?
four anteroposterior curvatures:
thoracic and sacral, both concave anteriorly,
and cervical and lumbar, both concave posteriorly
Define Maxillae
Maxilla are bones that form the upper jaw
The major blood supply to the brain is carried by an artery that passes through the
carotid canal
The position of the spinous process
posterior
the largets cavity that encloses the brain is called the
cranial cavity
List five classes of vertebrae (5)
- Throacic
- Sacral
- Cervical
- Lumbar
- Sacrum and Coccyx
Paranasal Sinuses are (4)
- frontal (the lower forehead),
- maxillary (cheekbones), 3. ethmoid (beside the upper nose),
- and sphenoid (behind the nose).
The bones that form the angels of the cheeks and part of the lateral wall of each orbit are the
zygomatic bones
What are the facial bones (8)
- mandible
- maxillae
- nasal
- lacrimal
- inferor nasal conchae
- zygomatic
- palatine
- vomer
The longest part of the sternum is called
body or galdiolus
the small triangular bone made up of 4 or 5 small fused vertenrae is called
coccyx
List the 4 vertebral curvatures
Cervical
Thoracic
Lumbar
Pelvic
the two-step process of endchrondral ossfication ar
chondrification and ossification
A bony outgrowth or protuding of a bone is called
Protuberance
What the sutures of the parietal bones (4)
Coronal
Sagittal
Squamous
Lambdoid
2 regions of the skeleton
axial
appendicular
what are the sutures of the tympanic
sttyloid process and external acoustic meatus
A rounded knob that articulates with another
bone (occipital condyles of the skull)
Condyle
A projection superior to a condyle (medial
epicondyle of the femur)
Epicondyle
the bone that forms the posterio wall of the pelvic
sacrum
the bones of the skull that encloses the brain
cranium
the spinal cordw enters the cranial cavity by passing throught the
foramen magum
A rough elevated surface (tibial tuberosity)
tubrtosity
the borad superior portion of the sternum
manubrium
a slit through a bone is called
fissure
