Skeletal System Test Review Questions And Answers Graded A+.
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Skeletal System
Institution
Skeletal System
Skeletal System Test Review Questions And Answers Graded A+.
What are the two divisions of the skeletal system, How many bones in each, and which bones make them up? - correct answer. Axial-80 bones; Vertebral column, ribs and sternum
Appendicular- 126 bones; bones of the limbs (appe...
Skeletal System Test Review Questions
And Answers Graded A+.
What are the two divisions of the skeletal system, How many bones in each, and which
bones make them up? - correct answer. Axial-80 bones; Vertebral column, ribs and
sternum
Appendicular- 126 bones; bones of the limbs (appendages) and pectoral and pelvic
girdles.
What are the four things that make up the skeletal system? - correct answer. Bones,
joints cartilages, and ligaments
List the five functions of bones and briefly describe. - correct answer. Support- Internal
framework that supports and anchors organs
Protection- Bones protect soft body organs
Movement- Skeletal muscles (attached to bones) act as levers to move the body
Storage- fat is stored in the internal cavities of bones
Blood cell formation- 'hematopoiesis' occurs in red marrow
What are the two basic types of osseous tissue? Describe each. - correct answer.
Compact bone- Dense, looks smooth and homogeneous, primarily makes up diaphyses
of long bones
Spongy bone- small needlelike pieces, lots of open space, primarily makes up
epiphyses of long bones
What are the four shapes of bones, and give an example of each - correct answer.
Flat-sternum, ribs, skull
Irregular-vertebral bones, coxal bones
Long humerus, radius, ulna, tibia, fibula, femur
Short- Carpals and tarsals
Where is the epiphysis of a long bone? - correct answer. The enlarged portion on
either end; the heads
What is found inside the epiphysis? - correct answer. red marrow; blood cell formation
, What is found on the outside of the epiphysis - correct answer. Articular cartilage
(made of hyaline cartilage)
Where is the diaphysis of a long bone> - correct answer. The long portion of the long
bone; the shaft
What surrounds the diaphysis? Describe it. - correct answer. The periosteum- a
tough, fibrous tissue membrane connected to the bone with Sharpey's Fibers
What is the epiphyseal plate? - correct answer. A flat plate of a hyaline cartilage found
in the epiphyses of growing long bones; the site of long bone growth
What is the medullary cavity, and what does it contain? - correct answer. The
longitudinal cavity in the diaphyses of long bones; contains fat
What is hematopoeisis> - correct answer. Red blood cell formation
What is a process? Give an example. - correct answer. Any bony prominence; the
spinous process, which projectsposteriorly from a vertebra
What is a crest? Give an example. - correct answer. Narrow ridge of bone- iliac crest,
which is the ridge of the coxal bone
What is a meatus? Give an example. - correct answer. Canal-like passageway-
external auditory meatus of the temporal bone (ear canal)
What is a foramen? Give an example. - correct answer. Round or oval opening
through a bone- foramen magnum in base of occipital bone (allows brain to connect to
spinal cord)
What is an osteon ( or 'Haversian system' - same thing)? - correct answer. A system
of interconnecting canals in the microscoic structure of a compact bone
What is housed in a lacuna? - correct answer. An osteocyte (mature bone cell)
How do all osteocytes stay connected to the source of nutrients (blood vessels)? -
correct answer. Through canaliculi- tiny canals that connect osteocytes to each other
and to the blood supply
What is an osteoblast? - correct answer. Immature bone cell (bone forming cell)
What is an osteoclast? - correct answer. Bone destroying cell-activated by parathyroid
hormone
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