Chapter 3 Flashcards
Ankyl/o
crooked, bent, stiff
Arthr/o
joint
Cost/o
rib
Crani/o
skull
-Desis
to bind, tie together
Kyph/o
bent, hump
Lord/o
curve, swayback, bent
-Lysis
loosening or setting free
Myel/o
spinal cord, bone marrow
oss/e
oss/I
ost/o
oste/o
bone
scoli/o
curved, bent
spondyl/o
vertebral column, backbone
synovi/o
synov/o
synovial membrane, synovial fluid
Red bone marrow
which is located within the spongy
bone, is a hemopoietic tissue that manufactures red
blood cells, hemoglobin, white blood cells, and thrombocytes
Calcium
required for normal nerve and muscle function, stored in bones
Joints
work in conjunction with muscles, ligaments, and tendons, making a wide variety of body movements possible
Bones
act as a framework for the body, support and protect internal organs
2nd hardest tissue in the body {only dental enamel is harder}
ossification
A baby’s skeleton begins as fragile membranes and cartilage,
but after three months it starts turning into bone
repairs the minor damage to the skeletal system
that occurs during normal activity and also repairs
bones after injuries such as fractures
osteoclasts
break down old
or damaged bone
osteoblasts
help rebuild bone
Periosteum
is the tough, fibrous
tissue that forms the outermost covering of bone
peri-
surrounding
Compact bone
OR
Cortical bone
is the
dense, hard, and very strong bone that forms the
protective outer layer of bones.
Spongy bone
OR
Cancellous bone
is lighter
and not as strong as compact bone. This type of
bone is commonly found in the ends and inner portions
of long bones such as the femur. Red bone
marrow is located within this spongy bone
medullary cavity
is the central
cavity located in the shaft of long bones where it is
surrounded by compact bone. It is here that red and
yellow bone marrow are stored.
Medullary
pertaining to the inner section
endosteum
is the tissue that
lines the medullary cavity
Hemopoietic
OR
Hematopoietic
means pertaining
to the formation of blood cells (
Yellow bone marrow
functions as a fat storage area. It
is composed chiefly of fat cells and is located in the
medullary cavity of long bones.
Cartilage
is the smooth, rubbery,
blue-white connective tissue that acts as a shock
absorber between bones. Cartilage, which is more
elastic than bone, also makes up the flexible parts
of the skeleton such as the outer ear and the tip of
the nose.
Articular cartilage
covers the surfaces of bones where they come
together to form joints. This cartilage makes
smooth joint movement possible and protects the
bones from rubbing against each other
Meniscus
is the curved fibrous
cartilage found in some joints, such as the knee
and the temporomandibular joint of the jaw
Diaphysis
is the shaft of a long
bone
Epiphyses
are the wider ends of
long bones such as the femurs of the legs (singular
epiphysis). Each epiphysis is covered with articular
cartilage to protect it.
Proximal epiphyses
is the
end of the bone located nearest to the midline of the
body.
Distal epiphyses
is the end of the bone
located farthest away from the midline of the body.
Foramen
is an opening in a bone
through which blood vessels, nerves, and ligaments
pass (plural, foramina)
Process
is a normal projection on the surface of a
bone that most commonly serves as an attachment for
a muscle or tendon For example, the mastoid process
is the bony projection located on temporal bones just
behind the ears
Joints
OR
Articulations
place of union between two or more bones
Fibrous joints
consisting of inflexible layers of dense
connective tissue, hold the bones tightly together. In
adults these joints, which are also known as sutures, do
not allow any movement
Fontanelles
OR
Soft spots
are normally present on the skull of a
newborn. These flexible soft spots facilitate the passage
of the infant through the birth canal. They also allow
for the growth of the skull during the first year. As the
child matures, and the sutures close, the fontanelles
gradually harden.
Cartilaginous joints
allow only
slight movement and consist of bones connected entirely
by cartilage. {ex where ribs connect to breast bone, allow movement during breathing}
Synovial joints
is created where two
bones articulate to permit a variety of motions. As used
here, the term articulate means to come together
Ball-and-socket joints
such as the hips and
shoulders, allow a wide range of movement in many
directions
Hinge joints
such as the knees and elbows, are synovial
joints that allow movement primarily in one
direction or plane
Synovial capsule
is the outermost layer of strong
fibrous tissue that resembles a sleeve as it surrounds
the joint.
Synovial membrane
lines the capsule and
secretes synovial fluid.
Synovial fluid
which flows within the synovial cavity,
acts as a lubricant to make the smooth movement of
the joint possible.
Ligaments
are bands of fibrous tissue
that form joints by connecting one bone to another
bone or by joining a bone to cartilage {knee is made up of a series of ligaments that allow movement in different directions}
Bursa
is a fibrous sac that acts as a cushion
to ease movement in areas that are subject to friction,
such as in the shoulder, elbow, and knee joints where a
tendon passes over a bone (plural, bursae).
Axial skeleton
protects the major organs of the nervous,
respiratory, and circulatory systems. In the human, the axial
skeleton consists of the 80 bones of the head and body
that are organized into five parts. These are (1) the bones of
the skull, (2) the ossicles (bones) of the middle ear, (3) the
hyoid bone, located on the throat between the chin and
the thyroid, (4) the rib cage, and (5) the vertebral column
Appendicular skeleton
makes body movement possible
and also protects the organs of digestion, excretion,
and reproduction. In the human, the appendicular skeleton
consists of 126 bones that are organized into: (1) the
upper extremities (shoulders, arms, forearms, wrists, and
hands) and (2) the lower extremities (hips, thighs, legs,
ankles, and feet).
Appendage
is anything that is attached to a major
part of the body and the term appendicular means referring
to an appendage.
Extremity
is the terminal end of
a body part such as an arm or leg.
Cranium
made up of 8 bones portion of the skull that
encloses and protects the brain
These cranial bones are joined by
jagged fibrous joints that are often referred to as sutures.
Frontal bone
is the anterior portion of the cranium
that forms the forehead. This bone houses the frontal
sinuses and forms the roof of the ethmoid sinuses, the
nose and part of the socket that protects the eyeball
Parietal bones
are two of the
largest bones of the skull. Together they form most of
the roof and upper sides of the cranium.
Occipital bone
forms the back part of the skull and the base of the cranium
Two Temporal bones
form he sides and base of the cranium
External auditory
is the opening
of the external auditory canal of the outer ear. This
canal is located within the temporal bone on each side of
the skull.
Meatus
external opening of a canal
Sphenoid bone
is an irregular,
wedge-shaped bone at the base of the skull. This bone
makes contact with all of the other cranial bones and
helps form the base of the cranium, the sides of the
skull, and the floors and sides of the eye sockets.
Ethmoid bone
is light, spongy bone
located at the roof and sides of the nose. Here it
separates the nasal cavity from the brain, and it also
forms a portion of each orbit.
Orbit
bony socket that surrounds and protects each eyeball
auditory ossicles
the three tiny bones located in each middle ear {malleus,incus,stapes}
FACE
made up of 14 bones, some of these bones contain air filled cavities known as sinuses {purpose is to lighten the weight of the skull}
Nasal bones
form the upper part of the bridge
of the nose {2}
Zygomatic bones
OR
Cheekbones
also
known as the cheekbones, articulate with the frontal
bone that makes up the forehead. The term articulate
means to join together with. {2}
Maxillary bones
form
most of the upper jaw (singular, maxilla). These bones
are also known as the maxillae.{2}
Palatine bones
form the anterior
(front) part of the hard palate of the mouth and
the floor of the nose. {2}
Lacrimal bones
make up
part of the orbit (socket of the eye) at the inner
angle.
Inferior Conchae
are the thin, scroll-like bones that form part of the
interior of the nose (singular, concha).
Vomer bone
forms the base for the
nasal septum.
Nasal septum
cartilage wall that divides the two nasal cavities
Mandible
OR
Jawbone
is the only movable bone of the skull. The
mandible is attached to the skull at the temporomandibular
joint