Skeletal System Flashcards
How many bones are there in the cranium?
80
what is the only moveable bone in your skull?
madible
what are the five vertebral regions?
cervical, thoracic, lumbar, sacral, small coccygeal
how many vertebrae are in cervical?
7
how many vertebrae are in thoracic?
12
how many vertebrae are in lumbar?
5
scoliosis
curvature of the spine laterally
kyphosis
hunch back
lordosis
lumbar is too forward
what does the thoracic cage protect?
heart and lungs
costal cartilage
the endings of the ribs and connects to the sternum
three types of ribs, and how many of each?
true ribs (1-7), false ribs (8-10), floating ribs (11-12)
flexion/extension
flexion- decreases the angle between the bones
extension- increases the angle between the bones
abduction/adduction/circumduction
abduction- moves the limb laterally away from the midline of the body
adduction- moves the limb laterally towards the midline of the body
circumduction-moving a part of the body in circular manner
rotation
medial- move limb towards body
lateral- away from the midline
supination/pronation
supination- move palms to anterior facing position
pronation- move palms to backward facing position
dorsiflexion/plantar flexion
dorsiflexion- move the front of the foot upward
plantar flexion- move the back of the foot upward
inversion/eversion
inversion-turn the foot to angle the bottom of the foot toward the midline
eversion- turns the bottom of the foot away from the midline
protraction/retraction
protraction-shoulders are moved forward
retraction-shoulders being pushed towards the vertebrae
depression/elevation
depression- downward movement
elevation-upward movement
opposition/reposition
opposition-bring the tip of the thumb to the tip of the finger
reposition-returning the thumb to an anatomical position
pivot joint
uniaxial joint that allows rotational movement
hinge joint
uniaxial joint that allows flexion/ extension movements
condyloid joint
biaxial joint that allows flexion/extension, abduction/adduction/ circumduction movements
saddle joint
biaxial joint that allows flexion/extension, abduction/adduction/ circumduction movements
plane joint
multiaxial joint that allows inversion/eversion of foot or flexion/extension/lateral flexion of the vertebral column
ball and socket joint
multiaxial joint that allows flexion/extension, abduction/adduction/circumduction, and medial/lateral rotation movements
axial skeleton
made up of 80 bones and is the head and trunk of the vertebrae
appendicular skeleton
made up of 126 bones, Portion of the skeleton of vertebrates made up of bones that support appendages
how many bones are there in the axial skeleton?
there are 80 bones and the main bones are skull, vertebrae, rib cage and sternum
How many bones in appendicular?
there are 126 bones in the appendicular and the main bones are Pectoral girdle, arms, forearms, hands, pelvis, legs, feet, and ankles
Total bones in the body?
206
functions of the skeletal system
support and protection, body movement, produce blood cells, and storage of minerals and fats
long bones
cylinder-like shape, longer than it is wide
short bones
cube-like shape, equal in length, width and thickness
flat bones
thin and curved
irregular bones
complex shape
sesamoid
small and round, embedded in tendons
epiphysis
spongy bone at the ends of the bone
diaphysis
compact bone in the middle of the bone
articular cartilage
hyaline cartilage, padding
periosteum
membrane that covers the entire bone
medullary cavity
hollow chamber filled with bone marrow
2 functions of of the red/yellow bone marrow
red- blood
yellow-fat
spongy bone
cancellous epiphysis
compact bone
wall of the diaphysis