Medoceo
Skeletal System
Skeletal System Quiz
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1. Which of the following bone markings is NOT a projection for muscle attachment?
A: A fossa is a depression into which fits a projecting part of another bone when the two bones form a joint.
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2. Which one of the following best describes a synovial joint?
D: Synovial fluid is the lubricant that allows friction-free joint movement. A synarthrosis is an immovable joint
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3. Which term below refers to a depression in a bone?
B: Fossa is a depression reminiscent of a (small) dinner table plate. A tuberosity is a roughening on a bone surface. The other two choices are projections above a bone surface.
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4. What is a “trochanter”?
A: the “greater” trochanter is a bone marking (a bump) that lies on the lateral surface of the proximal femur, while the “lesser” trochanter lies on the medial surface of the proximal femur.
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5. To which bones does the word phalanges apply?
A: Choice B refers to carpals and tarsals. Choices C and D include metacarpals and metatarsals.
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6. How do synovial joints differ from the other types of bone articulation?
A: And the cavity is filled with synovial fluid.
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7. Synovial joints have all of the following features EXCEPT?
C: Articulating bone surfaces are covered by hyaline cartilage. Synovial membranes cover all other internal joint surfaces.
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8. On which bone is the greater trochanter found?
B: Only the femur has a structure named “trochanter”.
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9. What is the name given to the central tunnel of an osteon that contains blood vessels?
C: Also known as the central canal. The medullary canal is a macroscopic structure within the diaphysis (shaft) of a long bone.
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10. Which bone of the head has a synovial joint?
C: The ramus of the mandible (the only movable bone of the skull) articulates with the temporal bone at the mandibular fossa. The joint (temporomandibular join) is freely moveable, allowing us to chew and speak.
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11. Articulating bones are joined by___
D: Ligaments join bone to bone. Tendons (and aponeuroses) join muscle to bone.
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12. In which of the following bone structures do osteocytes live?
C: Lacunae are the spaces within the lamellae of an osteon which enclose a bone cell (osteocyte). These cells extend their processes into the canaliculi.
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13. Where is the epiphyseal plate of a long bone located?
B: The “plate” is the hyaline cartilage between the shaft (diaphysis) and end (epiphysis) of a long bone in children and adolescents. In adults it is replaced by an ossified “epiphyseal line”.
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14. Which one of the following lists contains only bones in the appendicular skeleton?
B: The coccyx, occipital, sternum and mandible are parts of the axial skeleton.
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15. Which of the following bone markings forms part of an articulation?
B: The lateral condyle of the femur articulates with the lateral facet of the superior articular surface of the tibia, in the knee joint.
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16. Which one of the following is a bone that is embedded within a tendon?
D: Sesamoid refers to like a sesame seed. Many are normal parts of anatomy that ossify within tendons (patella, fabella, hallux sesamoid).
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17. Which of the following is an example of a synovial joint?
D: The radius and ulna are freely moving at the elbow joint.
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18. Which bone is most superior?
B: The occipital bone forms the base of the skull and so is above (superior) to all the others when the body is in the anatomical position.
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19. Carpals refers to____
B: Wrist bones are carpals; hand bones are metacarpals (ankle bones are tarsals)
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20. Which of the following is NOT a “long” bone?
C: A “long bone” has a length that is significantly longer than its width. A carpal (a bone of the wrist) is a short bone.
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21. One of the functions of bones is to make red blood cells. What is this process known as?
B: Haemopoiesis (or haematopoiesis) refers to making all of cellular components of blood. The other (wrong) choices are, respectively, the rupturing (lysis) of RBC, blood in the urine and the process by which the body causes bleeding to stop.
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22. The axial skeleton groups together which sets of bones?
D: Choice A describes the appendicular skeleton. Choices A and D are complementary.
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23. What body part is able to perform pronation and supination?
A: It is the radius and ulna bones whose movement relative to each other produce pronation and supination.
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24. What is contained within the medullary canal of a long bone?
C: Red (and/or yellow) marrow fills the medullary canal (or cavity).
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25. The manubrium and the xiphoid process are located on which part of the skeleton?
B: The manubrium and xiphoid process (and the body) are all parts of the sternum
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26. Which of the following comprise seven bones?
A: C1 to C7. There are eight carpals in each wrist. There are eight cranial bones. There are five lumbar vertebrae.
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27. In which one of the following structures do osteocytes reside?
B: Lacuna refers to a hole, pit, “lake” or cavity within a bone.
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28. What does “articulation” refer to?
C: Articulation means joint between bones.
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29. Which of the following describes the movements known as pronation and supination?
C: Pronation occurs when the radius is moved from a position parallel to the ulna to one where it crosses over the ulna, and supination is the return motion (may be thought of as the action we perform when turning off a wall-mounted tap).
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30. Which of the following is a function of the skeletal system?
A: New blood cells are made in the bone marrow (haemopoiesis). Haemostasis refers to stopping bleeding.
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31. Which list contains the bones of the pelvic and pectoral girdles?
C: The manubrium, coccyx and sacrum are within the axial skeleton.
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32. The appendicular skeleton groups together which sets of bones?
A: The appendages (arms and legs) and the girdles form the appendicular skeleton
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33. Which of the following is NOT a depression or cavity on a bone?
A: A tuberosity is a rough area on the surface of a bone to which a muscle’s tendon attaches.
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34. What are the bones of the fingers known as?
D: Phalanges (singular phalanx) are the bones of the fingers or toes. Metacarpals are the bones of the hand.
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35. The appendicular skeleton includes all of the following EXCEPT?
B: The thoracic cage (the ribs) is part of the axial skeleton.
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36. Where are blood vessels in compact bone found?
D: The central canal (or Haversian canal) of an osteon houses blood vessels.
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37. In which structure are osteoclasts and osteoblasts found?
A: The membrane around bones houses the bone-forming cells (osteoblasts) and the bone resorbing cells (osteoclasts).
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