Chapter 7 - Axial Skeleton Notes Flashcards
Chapter 7 - Axial Skeleton
bones have processes, smooth surfaces, and holes that are associated with _______, _______, _______, _____ and ________.
ligaments muscles joints nerves blood vessels
Chapter 7 - Axial Skeleton
if a bone possesses a ________ or _______, it is usually because a ligament or tendon what attached to that during life
tubercle (lump)
process (projection)
Chapter 7 - Axial Skeleton
if a bone has a smooth articular surface, that surface was part of a _______ and was covered with ___________
joint
articular cartilage
Chapter 7 - Axial Skeleton
if a bone has a ________ that was occupied by something such as a nerve or blood vessel
foramen (hole)
Chapter 7 - Axial Skeleton
sinuses
epithelium lined air spaces
Chapter 7 - Axial Skeleton
axial skeleton consists of
skull
vertebral column
thoracic cage
Chapter 7 - Axial Skeleton
skull is composed of how many bones
28
Chapter 7 - Axial Skeleton
the 6 ______ which function in hearing are located inside the temporal bone
auditory ossicles
Chapter 7 - Axial Skeleton
the auditory ossicles are
2 each of:
malleus
incus
stapes
Chapter 7 - Axial Skeleton
the ______ or braincase protects the brain
cranial vault
Chapter 7 - Axial Skeleton
the _________ from the structure of the face in the anterior skull, but do not contribute to the cranial vault.
14 facial bones
Chapter 7 - Axial Skeleton
function of the facial bones
protect the sensory organs of the head and function as muscle attachment sites
Chapter 7 - Axial Skeleton
what are the 14 facial bones
maxilla (2) mandible (1) zygomatic (2) palatine (2) nasal (2) lacrimal (2) vomer (1) inferior nasal concha (2)
Chapter 7 - Axial Skeleton
the mandible and maxillae posses _______ with sockets for the attachment of the teeth
alveolar processes
Chapter 7 - Axial Skeleton
the ______ which “floats” in the neck is the attachment site for the throat and tongue muscles
hyoid bone
Chapter 7 - Axial Skeleton
the skull can be thought of as a
single bone or a single unit
Chapter 7 - Axial Skeleton
the ______ are joined at the midline by the sagittal suture
parietal bones
Chapter 7 - Axial Skeleton
the parietal bones are joined to the ______ by the coronal suture
frontal bones
Chapter 7 - Axial Skeleton
the parietal bones are joined to the ______ by the lambdoid suture
occipital bone
Chapter 7 - Axial Skeleton
the parietal bones are joined to the ________ by the squamous suture
temporal bone
Chapter 7 - Axial Skeleton
______ are the points of attachment for neck muscles
nuchal lines
Chapter 7 - Axial Skeleton
______ transmits sound waves toward the eardrum
external auditory meatus
Chapter 7 - Axial Skeleton
important neck muscles attach to
mastoid process
Chapter 7 - Axial Skeleton
the temporal lines are attachments for
temporalis muscle
Chapter 7 - Axial Skeleton
the __________ from the _______ and ______ bones forms a bridge across the side of the skull
sygomatic arch
temporal
zygomatic
Chapter 7 - Axial Skeleton
the ____ contain the eyes
orbits
Chapter 7 - Axial Skeleton
the nasal cavity is separated by
nasal septum
Chapter 7 - Axial Skeleton
the _______ separates the nasal cavity from the oral cavity
hard palate
Chapter 7 - Axial Skeleton
the _________ which connect to the nasal cavity
paranasal sinuses
Chapter 7 - Axial Skeleton
the paranasal sinuses are
frontal
ethmoidal
sphenoidal
maxillary
Chapter 7 - Axial Skeleton
the ______ articulates with the temporal bone
mandible
Chapter 7 - Axial Skeleton
the _____ is a point of attachment for on the meninges
crista galli
Chapter 7 - Axial Skeleton
the ________ extend into the roof of the nasal cavity through the __________
olfactory nerves
cribriform plate
Chapter 7 - Axial Skeleton
the _______ is occupied by the pituitary gland
sella turcica
Chapter 7 - Axial Skeleton
the spinal cord and the brain are connected through the
foramen magnum
Chapter 7 - Axial Skeleton
_______ are points of articulation between the skull and vertebral column
occipital condyles
Chapter 7 - Axial Skeleton
blood reaches the brain through
internal carotid arteries and the vertebral arteries
Chapter 7 - Axial Skeleton
the carotid arteries pass through
carotid canals
Chapter 7 - Axial Skeleton
the vertebral arteries pass through
foramen magnum
Chapter 7 - Axial Skeleton
most blood leaves the brain through the
internal jugular veins
Chapter 7 - Axial Skeleton
internal jugular veins exit through the
jugular foramina
Chapter 7 - Axial Skeleton
styloid processes provide attachments points for 3 muscles involved in the movement of:
tongue
hyoid bone
pharynx
Chapter 7 - Axial Skeleton
the ______ forms the floor of the nasal cavity
hard palate
Chapter 7 - Axial Skeleton
the vertebral column provides
flexible support and protects spinal cord
Chapter 7 - Axial Skeleton
the vertebral column has 4 major curvatures
cervical
thoracic
lumbar
sacral/coccygeal
Chapter 7 - Axial Skeleton
the spine has ____ and _____ curves
primary and secondary
Chapter 7 - Axial Skeleton
primary curves are present at birth
thoracic
sacral
Chapter 7 - Axial Skeleton
secondary curves develop once the baby starts walking and bearing weight on the spine
cervical
lumbar
Chapter 7 - Axial Skeleton
abnormal curvature of the lumbar
lordosis
Chapter 7 - Axial Skeleton
abnormal curvature of the thoracic
kyphosis
Chapter 7 - Axial Skeleton
abnormal curvature of the lateral
scoliosis
Chapter 7 - Axial Skeleton
at birth the spine is one big C shape curve
kyphotic curve
Chapter 7 - Axial Skeleton
typical vertebrae consists of
body
arch
various processes
Chapter 7 - Axial Skeleton
adjacent vertebral bodies are separated by
intervertebral disks
Chapter 7 - Axial Skeleton
what is fibrous outer covering of intervertebral disk
annulus fibrosus
Chapter 7 - Axial Skeleton
what is the gelatinous interior of intervertebral disk
nucleus pulposus
Chapter 7 - Axial Skeleton
where are there no intervertebral disks
between occiput and atlas (c1)
between atlas and axis (c1 and c2)
Chapter 7 - Axial Skeleton
vertebrae articulate with one another through
superior and inferior articular processes
Chapter 7 - Axial Skeleton
what protects and contains the spinal cord
vertebral foramen
Chapter 7 - Axial Skeleton
what forms the vertebral foramen
part of the body and arch (pedicle and lamina)
Chapter 7 - Axial Skeleton
spinal nervces exit through
intervertebral foramina
Chapter 7 - Axial Skeleton
the ______ and _________ serve as points of muscle and ligament attachment
transverse and spinous processes
Chapter 7 - Axial Skeleton
number of cervical vertebrae
7
Chapter 7 - Axial Skeleton
all cervical vertebrae have
transverse foramina
Chapter 7 - Axial Skeleton
what passes through the transverse foramina
vertebral artery
Chapter 7 - Axial Skeleton
what is a major blood supply to the brain
vertebral artery
Chapter 7 - Axial Skeleton
cervical vertebra have a ____ or split spinous processes
bifid
Chapter 7 - Axial Skeleton
how many thoracic vertebrae
12
Chapter 7 - Axial Skeleton
thoracic vertebrae are characterized by
long downward pointing spinous processes and demifacets
Chapter 7 - Axial Skeleton
function of the thoracic ribs
articulation with the ribs
Chapter 7 - Axial Skeleton
how many lumbar vertebrae
5
Chapter 7 - Axial Skeleton
characteristics of lumbar vertebrae
thick heavy bodies and processes
Chapter 7 - Axial Skeleton
number of sacrum vertebrae
5
Chapter 7 - Axial Skeleton
characteristics of sacrum vertebrae
fused vertebrae
Chapter 7 - Axial Skeleton
sacrum vertebrae attach where
pelvis
Chapter 7 - Axial Skeleton
coccygeal vertebrae number
4
Chapter 7 - Axial Skeleton
characteristics of coccygeal vertebrae
fused
Chapter 7 - Axial Skeleton
coccygeal vertebrae attach where
sacrum
Chapter 7 - Axial Skeleton
what does the thoracic cage consist of
ribs - true or vertebrosternal ribs costal cartilage false ribs vertebrochondral ribs floating or vertebral ribs head tubercle neck body angle
Chapter 7 - Axial Skeleton
function of the thoracic cage
protect the thoracic organs and to prevent the collapse of the thorax during respiration
Chapter 7 - Axial Skeleton
how many pairs of ribs attach to the thoracic vertebrae
12 pairs
Chapter 7 - Axial Skeleton
division of true/false ribs
7 pairs true ribs
5 pairs false ribs
Chapter 7 - Axial Skeleton
how many of the false ribs are floating
2 pairs
Chapter 7 - Axial Skeleton
the sternum is composed of
manubrium the body xiphoid process jugular notch sternal angle