Skeletal System Homework
The elbow is classified as __________
a hinge joint
Axial or Appendicular: Coxal bone
appendicular
The skull, vertebral column, and thoracic cage
axial skeleton
The wrist bones are actually ___________
carpals
Which of these bones articulates with the acetabulum of the coxal bone?
femur
Ankle joint
hinge joint
What type of joint is found between the atlas and the dens of the axis?
pivot
Julie fell off her horse and dislocated her right shoulder. The primary treatment to resolve this injury is ___________________
reduction
Which bones form the shoulder joint?
scapula and humerus
How many true ribs do humans have?
seven
Cube-shaped bones that contain mostly spongy bone
short bones
In adults, the function of yellow marrow is to __________
store adipose tissue
Immovable joints are functionally classified as ________________
synarthroses
The shin bone is called the
tibia
Two or bones meet at a location called ________
an articulation (joint)
The broken bone is exposed to the outside
an open, or compound, fracture
Each complex of central canal and matrix rings in compact bone is known as _____________
an osteon (Haversian System)
Axial or Appendicular: Femur
appendicular
Axial or Appendicular: Fibula
appendicular
Axial or Appendicular: Phalanges
appendicular
Axial or Appendicular: Tarsals
appendicular
Axial or Appendicular: Ulna
appendicular
What type of tissue covers the epiphysis of bones and reduces friction in the joints?
articular cartilage
Axial or Appendicular: Atlas
axial
Axial or Appendicular: Parietal bone
axial
Axial or Appendicular: Sternum
axial
Axial or Appendicular: True Ribs
axial
Shoulder joint
ball-and-socket joint
Hematopoiesis
blood cell formation
What is the function of red bone marrow?
blood cell formation
The canal that runs through the core of each osteon (Haversian System) contains ____________
blood vessels and nerve fibers
The presence of an epiphyseal plate indicates that _________
bone length is increasing
Small canals that connect osteocytes in their lacunae to the central canal
canaliculi
Small channels that radiate through the matrix of compact bone
canaliculi
This allows nutrients to diffuse from the central canal to all the osteocytes within the osteon
canaliculi
What type of vertebrae have openings in their transverse processes that guide the vertebral arteries up toward the brain?
cervical
Which spinal curvature develops as an infant begins to hold up his or her head?
cervical
The tailbone is the
coccyx
Which of these is responsible for the flexibility of bone?
collagen
A bone fracture where the bone is broken into many fragments
comminuted fracture
A fracture that is common in osteoporotic bones
compression fracture
Knuckle joints
condylar joint
Area where bone growth takes place in a long bone
epiphyseal plate
What term refers to the end of a long bone?
epiphysis
T/F: A closed, or simple, fracture is one that penetrates through the skin's surface
false
T/F: A newborn baby has an S-shaped curvature known as a primary curvature
false
T/F: Articular cartilage covers the diaphysis of long bones
false
T/F: The last two pairs of ribs are called true ribs because they have no anterior attachments
false
The fibrous connections between the bones of a fetal skull
fontanels
What kind of tissue is the forerunner of long bones in the embryo?
hyaline cartilage
Which bones form the palm of the hand?
metacarpal bones
Which of these bones is associated with the hand?
metacarpals
Cells that can build bony matrix
osteoblasts
Cells that can dissolve the bony matrix
osteoclasts
The bone cells that respond to parathyroid hormone (PTH) to destroy bone matrix and release calcium into blood
osteoclasts
What type of bone cell is primarily active when bone growth occurs?
osteocyte
The arrangement of bone tissue consists of
osteons (Haversian System)
Which of these bones is most susceptible to fractures?
osteoporotic bones
Joint between atlas and axis
pivot joint
Wrist joint
plane joint
What causes the pain associated with herniated discs?
pressure on spinal nerves by the protruding discs
Which of these is the function of the skeletal system?
storage site for calcium
How is the ball-and-socket joint classified?
synovial joint
Ossification
the process of bone formation
T/F: Hematopoiesis refers to the formation of blood cells within the red marrow cavities of certain bones
true
T/F: In anatomical position, the lateral lower leg bone is the fibula
true
T/F: The intervertebral discs that cushion the spine and absorb shock are composed of fibrocartilage
true
T/F: The teeth are anchored in the maxillary bones and the mandible
true
T/F: There are seven cervical, twelve thoracic, and five lumbar vertebrae
true
Which of these bone markings is a projection that serves as a site for muscle or ligament attachments?
tubercule
Which two bones constitute the forearm?
ulna and radius
What bones protect the spinal cord?
vertebrae
Where does hematopoiesis occur?
marrow cavity
What is the region of the coxal bone that bears most of the body weight when a person is sitting?
ischial tuberosity
The small cavities in bone tissue where osteocytes are found
lacunae
Layers or rings of calcification that are found in compact bone
lamellae
The hyoid bone is unique because it ________
largely consists of cartilage
The femur, tibia, humerus, and radius are classified as
long bones
Miguel had an abnormal forward curvature in the lumbar region, resulting in a swaybacked posture, Miguel has __________
lordosis
