Chapter 3 The Skeletal System A&P Flashcards
is the tough, fibrous tissue that forms the outermost covering of bone
periosteum
is the dense, hard, and very strong bone that forms the protective outer layer of bones
compact bone (cortical bone)
is lighter and not as strong as compact bone. red bone marrow is located within
spongy (cancellous bone)
is the central cavity located in the shaft of long bones where it is surrounded by compact bone
medullary cavity
means pertaining to the inner section
medullary
is the tissue that lines the medullary cavity
endosteum
is located within the spongy bone, is a hemopoietic tissue that manufactures red blood cells
red bone marrow
means pertaining to the formation of blood cells
hemopoietic
functions as a fat storage area
yellow bone marrow
is the smooth, rubbery, blue-white connect tissue that acts as a shock absorber
cartilage
covers the surface of bones where they come together to form joints
articular cartilage
is the curved fibrous cartilage found in some joints, such as the knee
meniscus
is the shaft of a long bone
diaphysis
are the wider ends of long bones such as the femur of the legs
epiphysis
is the end of the bone located nearest to the midline
proximal epiphysis
is the end of the bone located farthest away from the midline of the body
distal epiphysis
is an opening in a bone through which blood vessels, nerves, and ligaments pass
foramen
is the opening at the base of the skull through which the spinal cord passes
foramen magnum
is a normal projection on the surface of a bone that most commonly serves as an attachment for a muscle or tendon
process
is the bony projection located on the temporal bone just behind the ears
mastoid process
are the place of union between two or more bones
joints (articulations)
consists of inflexible layers of dense connective tissue, hold the bones tightly together
fibrous joints (sutures)
soft spots, are normally present on the skull of a newborn
fontanelles
allow only slight movement and consist of bones connected entirely by cartilage
cartilaginous joints
allows some movement to facilitate childbirth. is located behind the pubic bones
pubic symphysis
is created where two bones articulate to permit a variety of motions
synovial joint
such as the hips and shoulders, allow a wide range of movement in many directions
ball-and-socket joints
such as the knees and elbows, are synovial joints that allow movement primarily in one direction or plane
hinge joints
is the outermost layer of strong fibrous tissue that resembles a sleeve as it surrounds the joint
synovial capsule
lines the capsule and secretes synovial fluid
synovial membrane
flows within the synovial cavity, acts as a lubricant
synovial fluid
are bands of fibrous tissue that form joints by connecting one bone to another bone or by joining a bone to cartilage
ligaments
is a fibrous sac that acts as a cushion to ease movement in areas that are subject to friction
bursa
protects the major organs of the nervous, respiratory, and circulatory system. consists of 80 bones
axial skeleton
makes body movement possible and also protects the organs of digestion, excretion, and reproduction. consists of 126 bones
appendicular skeleton
is made up of 8 bones of the skull
cranium
is the anterior portion of the cranium that forms the forehead
frontal bone
are two of the largest bones of the skull. form most of the roof and upper sides of the cranium
parietal bones
forms the back part of the skull and the base of the cranium
occiptal bone
form the sides and base of the cranium
temporal bones
is the opening of the external auditor canal of the outer ear.
external auditor meatus
is the external opening of a canal
meatus
is an irregular, wedge-shaped bone at the base of the skull. makes contact with all other cranial bones
sphenoid bone
is light, spongy bone located at the roof and sides of the nose
ethmoid bone