1B: Types of Bones, Joints & Body Actions Flashcards
4 types of bones
long bones, short bones, flat bones, and irregular bones
how many bones in the body?
206
list functions of bones (5)
support, protection, movement, mineral storage, and blood cell formation
generally have tubular shafts and articular surfaces at each end
long bones
provide the framework for the body and make movement possible
long bones
have a diaphysis and 2 epiphyses
long bones
early in life, the epiphysis is separated from the diaphysis by what cartilaginous structure in long bones?
epiphyseal plate (growth plate)
tissue layer around entire bone where bone cells are produced and what muscles attach to
periosteum
femur, humerus, tibia
examples of long bones
no diaphysis, fairly symmetrical
short bones
carpal and tarsal bones
examples of short bones
flat, thin, with broad flat surfaces
flat bones
protect vital organs such as the brain, heart, and lungs. function=protection
flat bones
head bones, thorax, scapula
examples of flat bones
any bone that is not long, short or flat bone
irregular bones
vertebral column, patella, sesamoid bones
irregular bones
free-floating oval bones that are usually found within tendons of muscles
sesamoid bones
hold tendon further away from joint, so angle of tendon increases, as well as leverage and power of the muscle
sesamoid bones
at the end of long bones, bony knobs
condyles
a ridge
crest
just above the condyles, smaller bony knobs
epicondyle
a hole
foramen
a smooth, hollow surface on the bone
fossa
smaller, flatter smooth surface like the vertebrae that articulate superiorly and inferiorly
facet
area of bone that looks cut out and allows structure like blood vessels and nerves to pass through
notch
rounded part at the end of a long bone
head
just below the head where it narrows
nech
long, thin projection of bone
spine/processes
pointy at the end of the bone
styloid process
smaller bump on the bone
tubercle
medium bump on the bone
tuberosities
biggest bump on the bone
trochanters
number of bones that form the cranium
8
number of facial bones
14
number of skull bones
22
most posterior skull bone, contains the foramen magnum, occipital protuberance, super and inferior nuchal lines
occipital bone
protruding bump on the back of your head before the foramen magnum
occipital protuberance
most anterior cranial bone
frontal bone
cranial bone that contains external auditory meatus, mastoid process, and zygomatic arch
temporal bones
hole located between the ramus of the mandible and the mastoid process that allows sound to enter the inner ear
external auditory meatus