Quiz 3 (Torso and girdles) Flashcards
Hyaline cartilage where is it found (3)
tracheal rings
costal cartilages of the ribs
covers bone surfaces at synovial joints
Brief description of hyaline cartilage (3points)
matrix of closely packed collagen fibers not easily seen under the light microscope.
Clear, glassy appearance
tough but flexible
Fibrocartilage where is it found (3)
intervertebral discs
menisci of the knee joint
symphysis pubis
Brief description of fibrocartilage (2)
matrix is supported by collagenous fibers which are densely packed and regularly arranged.
very tough and durable
messier looking that hyaline cartilage under the microscope.
pl. of vertebra
vertebrae
vertebra
bone that houses and protects part of the spinal cord
intervertebral foramina
gaps between the pedicles of the successive vertebrae which permit the passage of nerves to or from the enclosed spinal cord
intervertebral discs
fibrocartilage that separates and cushions the vertebrae
Sacrum
fusion of five sacral vertebrae
superior to the coccyx
coccyx
3-5 fused coccygeal vertebrae
inferior to sacrum
Primary curvatures def.
born with these, also known as accommodation curvatures
2 primary curvatures
thoracic and pelvic(sacral) curvature
thoracic curvature
posterior curvature of the thoracic vertebrae
pelvic (sacral) curvature
posterior curvature of the sacrum
seconday curvatures def.
develop as you learn to hold your head up and walk
cervical curvature
anterior curvature of the cervical vertebrae
lumbar curvature
anterior curvature of the lumbar vertebrae
2 secondary curvatures
cervical and lumbar curvatures
Structures of all the vertebrae
body (centrum) vertebral foramen spinous process transverse processes vertebral arch superior articular processes inferior articular processes
another name for the body of the vertebra
centrum
Body
thick, large anterior section
vertebral foramen
area which the spinal cord passes through
posterior to the body
spinous process
most posterior of the processes
generally midline
can often see under the skin of the back
transverse processes
processes on the lateral sides of the vertebra
vertebral arch (2)
pedicles (anterior)
laminae (posterior)
pedicles (of the vertebral arch)
arise along the posterolateral margins of the body
laminae (of the vertebral arch)
on either side exten dorsomedially to form the roof of the vertebral arch
superior articular processes
project cranially from the posterior surface of the vertebra
superior articular facet
polished surface on posterior of superior articular process
inferior articular processes
project dorsally from the posterior surface of the vertebra
inferior articular facet
polished surface on the anterior surface of the inferior articular processes
Atlas/axis articulation allows this
to turn head side to side
The joint between the atlas and axis does not have this
intervertebral disk
Cervical vertebrae sturcturs
transverse foramina
bifid spinous process (C2-C6)
transverse foramina and what vertebra are the found
holse in the transverse processes
c1-c7
costal process
originate near the ventrolateral portion of the vertebral body
How many cervical vertebra
7
bifid spinous process and what vertebra are they found
c2-c6
spinous process split into two at the end
atlas, which vertebra number
c1
atlas what does it articulate with
occipital condyles
atlas, what makes it special (2)
lacks a body
large vertebral foramen
axis, which number
c2
axis, what makes it special
presence of dens (odontoid process)
odontoid process (and other name)
dens
bony process that is the remnant of the fused body of the atlas
name of C7
vertebral prominens
what makes the vertebral prominens special
long slender spinous process that ends in a broad tubercle
How man thoracic vertebra
12
Thoracic vertebra (T1-T12)
reps attach
inferior pointed spinous process (giraffe)
Special structures of the thoracic vertebra
transverse costal facets
demifacets (superior and inferior) (costal facets)
transverse costal facets
smooth surfaces on the anterior surface of the transverse process
articulates with tubercle of the rib
demifacets
ruff patchs on the lateral, posterior body of the vertebrae
Articulates of the head of the rib
Number of lumbar vertebrae
5
Special features of the lumbar vertebrae
large, thick body
caudally pointing spinous process (moose)
Sacrum number of fused vertebra
5
auricular surfaces (sacrum)
articulates with the pelvic girdle at the sacroilliac joint
sacral promontory
prominent bulge at the anterior tip of the base (superoanterior surface)
superior articular processes
form synovial articulations with the last lumbar vertebra
superior articular facets
polished portion of the superior articular processes
sacral canal
inside the median sacral crest