Chapter 15 Flashcards
musculoskeletal system
bones, muscles, and joints of the body
structural support and protection of internal organs
bones
muscles
internal and external movement
joints
where bones come together/type determined by need or flexibility
tendons
bind muscles to bone
ligaments
bind bones to other bones
ossification
replacement of cartilage with bone
osteoblast
produce immature bony tissue that replaces cartilage
osteocyte
nourishes and maintains bone
osteoclast
reabsorb or digest bone (remodels bone)
MD
- Orthopedist
- Rheumatologist
DO
Osteopathic physician
what work together to deposit and break down bone through life
osteoblasts and osteoclasts
what is a source of calcium in our body
skeleton
what does proper formation of bone depend on
- calcium
- phosphorus
- vitamin D
what helps create hard bone
calcium phosphate enzyme
why is calcium necessary
needed for nerve transmittal to muscle, including heart muscle and muscles attached to bone
how is calcium level maintained
maintained in blood by parathyroid gland which secretes a hormone to release calcium from bone
diaphysis
shaft
epiphysis
end
metaphysis
cone-like flared portion between end and shaft
epiphyseal line or plate
growth plate where cartilage replaced by bone for bone growth (in length)
interior bone structure includes:
- articular bone
- epiphyseal line or plate
- cancellous bone
- compact (cortical) bone
- medullary cavity
- periosteum
what do end of the bones being covered by articular cartilage in the joint allow
cushions joints and allows it to more smoothly
compact bone
contains haversian systems for blood vessels, nerves and yellow bone marrow (mostly fat)
cancellous (spongy/trabecular) bone
spaces contain red bone marrow with elements for blood formation
yellow marrow
chiefly flat
red marrow
- rich with blood vessels and immature and mature blood cells in various stages of development
- in later life replaces with yellow marrow
hematopoiesis
the production of all types of blood cells in the bone marrow
processes
serve as attaches for muscles, ligaments, and ligaments
depression
openings or hollow regions that help join bones or serve as passageways for nerves and/or vessels
facial bones
- nasal bones
- lacrimal bones
- maxillary bones
- mandibular bones
- zygomatic bones
- vomer
air cavities
- located in facial and cranial bone
- lighterb the skull
- warm and moisten the air as it passes into the respiratory system
vertebrae
26 bone segments from the base of skull to tailbone in 5 divisions and separated by pads of cartilage called intervertebral discs
coccyx
tailbone
acetabulum
rounded depression in pelvis that joins the femur, forming the hip joint
acromion
outward extension of shoulder blade forming the point of the shoulder
bone
dense, hard connective tissue composing the skeleton
bone depression
opening or hollow region serving as a connection for bons, or passageway for blood vessels and nerves
bone process
englarges area that extends from bones as an attachment for muscles, tendons, and ligaments
calcium
a mineral constituent of bone
cancellous bone
spongy, porous bone tissue in inner part if bone
cartilage
flexible, connective tissue
collagen
dense, connective tissue protein strands found in bone ans other tissues
compact bone
hard, dense bone tissue, usually found around outer portion of bone
cranial bones
skull bones
- ethmoid
- frontal
- occipital
- parietal
- sphenoid
- temporal
diaphysis
shaft or mid-portion of a long bone
disc
flat, round, plate-like structure
epiphyseal plate
- cartilaginous area at the ends of long bones where lengthwise growth takes in the immature skeleton
- makes you taller
epiphysis
- each end of a long bone
- area beyond the epiphyseal plate
facial bones
bones of the face
- lacrimal
- mandibular
- maxillary
- nasal
- vomer
- zygomatic
fontanelle
soft spot (incomplete bone formation) between the skull bones of an infant
foramen magnum
opening of the occipital bone through which the spinal cord pases
haversian canals
- minute spaces filled with blood vessels
- found in compact bone
ligament
fibrous connective tissue that binds bones to other
malleolus
round process on both sides of the ankle joint
manubrium
upper portion of the sternum
mastoid process
round projection on the temporal bone behind the ear
medullary cavity
central, hollowed-out area in the shaft of a long bone
metaphysis
flared portion of a long bone, between the diaphysis and the epiphyseal
olecranon
large process on the proximal end of the ulna
orthopedist
medical doctor who specializes in bone, joint, and muscle conditions
osseous tissue
bone tissue
ossification
process of bone formation
ossification
process of bone formation
osteoblast
bone cell that helps form bony tissue
osteoclast
bone cell that absorbs and removes unwanted bony tissue
periosteum
- membrane surrounding bones
- rich in blood vessels and nerve tissue
phosphorous
mineral substance found in bones in combination with calcium
physiatrist
medical doctor who specializes in rehabilitation
public symphysis
area of confluence of the two public boes in the pelvis
red bone marrow
- found in cancellous bone
- site of hematopoiesis
ribs
twelve pairs of curved bones that form the chest wall
- true ribs are the first 7 pairs
- false ribs are pairs 8-10
- floating ribs are pairs 11 and 12
sella turcica
depression in the sphenoid bone where the pituitary gland is located
sinus
hollow air cavity within a bone
styloid process
pole-like process extending downward from the temporal bone on each side of the skull
suture
immovable joint between bones
temporomandibular joint
connection on either side of the head between the temporal bone of the skull and the mandibular bone of the jaw
tendon
fibrous connective tissue that bods muscles to connective tissue
trabeculae
supporting bundles of bony fibers in cancellous bone
vertebra
individual segment of the spine composed of the vertebral body, vertebral arch, spinous process, transverse process, and lamina
xiphoid process
lower, narrow portion of sternum
yellow bone marrow
fatty tissue found in the medullary cavity of most adult long bones
condyle
the knuckle-like process at the end of a bone near the joint
ossification
the process of bone formation
- calc/o
- calci/o
calcium
kyph/o
posterior curvature in thoracic region
lamin/o
lamina
lord/o
curve
lumb/o
- loins
- lower back
myel/o
bone marrow
orth/o
straight
oste/o
bone
scoli/o
crooked
spondyl/o
vertebra
vertebr/o
vertebra
-blast
embryonic cell
-clast
to break
-listhesis
slipping
-malacia
softening
-physis
to grow
-porosis
- pore
- passage
-tome
instrument to cut
acetabul/o
acetabulum (hip socket)
calcane/o
calcaneus (heal)
carp/o
carpals (wrist bones)
clavicul/o
clavicle (collar bone)
cost/o
ribs
crani/o
cranium (skull)
acetabulum
hip socket