SKELETAL SYSTEM Flashcards
how many bones are there in the body
206
how many ribs are there in the body
24
type of bone that are greater in length, width, consist on the shaft and a variable number of extremities ends and are slightly curved for strength
main function: absorbs the stress of the body’s weight at several different points, so that it evenly absorbs
long bones
type of bone, somewhat cube-shaped and are nearly equal in length and width
short bones
generally thin and composed of two nearly parallel plates of compact bone tissue enclosing a layer of spongy bone tissue
flat bones
bone that protect the brain
cranial bone
protect organs in the thorax
ribs
also known as breast bone
sternum
bones that have complex shapes and cannot be grouped to any categories of bones; vary in the amount of spongy tissue
irregular bones
also known as the back bone
vertebrae
bones develop in certain tendons where there is considerable friction, tension, physical stress
sesamoid bones
bones that allow the rotational movement of the hand
radius and ulna
known as the largest sesamoid bone; also known as “knee cap”
patella
the longest and strongest bone in the body
femur
a depression wherein the major ligament of the head of the femur is located
fovea capitis
it means “basin”; serves as the trunk and form connection between the vertebral and lower limb
pelvis
how many cranial are there in the skull
8
how many facial bone does the body have
14
forms the forhead
frontal bone
form the greater portion of the sides and roof of the cranial cavity
parietal
forms the posterior part and most of the base of the cranium
occipital
form the inferior lateral of the cranium and part of the cranial floor
temporal
lies at the middle part of the base of the skull; articulates with all the other cranial bones and hold them together
sphenoid
sponge-like in appearance and is located located on the midline in the anterior part of the cranial floor medial to the orbits
ethmoid
forms the upper jaw bone
maxillae
L-shape bones, form the posterior portion of the hard palette
palatine bones
also known as the “cheek bones”
zygomatic bones
the smallest of the face;
lacrimal bones
forms the bridge of the nose
nasal bones
triangular bone on the nasal cavity
vomer
scroll-like bones that form a part of the inferior lateral wall of the nasal cavity and project into the nasal cavity
inferior nasal conchae
lower jaw bone; strongest bone in the face; only movable skull bone
mandible
number of vertebrates at early development
33
number of vertebrates at adulthood
26
also known as “atlas”; holds up the head
c1
also called “axis” considerable amount of rotation in the vertebae
c2
considerable rotation in the vertebrae
dens
formed by the 5 sacral vertebrae
sacrum
what age is the total completion of sacrum
30 years old
also known as “tailbone”; formed by the fusion of 4 coccygeal vertebrae
coccyx
the true ribs
ribs 1-7
the false ribs
8-12
ribs attached to the sternum by common cartilage
ribs 8-10
known as floating ribs; do not attach to the sternum
ribs 11-12
location of xiphoid process
t9 & t10
the level of pubic symphysis and greater trochanters
coccyx
known as the common variation in the shape of the human body; determines the size, shape and position the the organs
body habitus
