Skeletal System Flashcards
(frontal
and parietal) suture
Coronal Suture
Page 5 skeletal system
Page 4 canva
There are ____ bones in the skull divided into two. What are those and how many they are?
Braincase (cranial bones) – 8 bones
Facial bones – 14 bones
Only 1 is freely movable – mandible (jaw)
Page 8 skeletal system
Page 5 canva
It is the entrance to the respiratory and digestive tracts
Facial bone page 5 canva page 9 ppt
(temporal and parietal) suture
squamous suture
occipital and parietal suture
Lambdoid suture
two parietal
Sagittal suture
babies
Fontanelle
Page 13 ppt
Page 6 canva
Anterior curve
Cervical region
Posterior curve
Thoracic region
Anterior curve
Lumbar region
Posterior curve
Sacral and coccygeal region
abnormal posterior
curvature of the
spine, mostly in
the upper thoracic
region
Kyphosis
abnormal posterior
curvature of the
spine, mainly in
the lumbar region,
resulting in a
swayback
condition
Lordosis
is an abnormal
lateral curvature of
the spine.
Scoliosis
It protects the vital organs within the thorax
Rib cage
The ____ pairs of ribs can be divided into ___ and _____
True ribs, ribs 1–7, attach directly to the sternum
by means of costal cartilages.
False ribs, ribs 8–12, attach to the sternum by a
common cartilage
ribs 11 and 12 do not attach at all to the sternum and
are called floating ribs.
upper and lower limb
Appendicular Skeleton
What is the name of the structure in the human skeleton that consists of four bones: two scapulae (shoulder blades) and two clavicles (collarbones)?
Pectoral girdle or shoulder girdle.
The pectoral girdle supports the upper limbs and provides attachment points for muscles that allow arm movement.
How many carpal bones in the wrist and metacarpal in the hands
8:5
Page 28
Page 8 canva
place where two bones come together.
Movable, but not always
Joints or Articulation
two bones that are united by
fibrous tissue and that exhibit little
or no movement
Fibrous Joints
Between the bones of the skull
Suture
separated by some
distance and held together by
ligaments
Syndesmoses
pegs to sockets
Gomphoses
What type of joint is connected by cartilage, allowing for limited movement and providing stability in areas such as the spine or ribs?
Cartilaginous Joints
What type of joint is freely movable, contains fluid in a cavity, and is commonly found in the appendicular skeleton?
Synovial Joints
What are the Bone classifications
Long Bones – most of the upper and lower limbs
Short Bones - bones of the wrist and ankle
Flat Bones – thin and flattened, skull, ribs
Irregular Bones - vertebrae and facial bones
Long bones
Diaphysis – central shaft
Epiphysis – two ends
Articular cartilage – covers the end of
epiphysis
Epiphyseal plate – growth plate, bone grows
in length
Epiphyseal line – present in adults, bone
stops growing
Two types of medullary cavity
Yellow marrow – mostly in adults – adipose
tissue
Red marrow – mostly in children – blood-forming
cells
Periosteum and endosteum contain _______
Osteoblasts (bone-forming cells)
destroys old bone tissue
Osteoclasts
mature bone cells
Osteocytes
mostly solid matrix and cells
Compact bones
- consists of
a lacy network of bone with many small,
marrow-filled spaces.
Spongy bones
delicate
interconnecting rods or
plates of bone
Trabeculae
