Question 1

Which malignant tumor is composed of neoplastic cartilage cells that are insensitive to chemotherapy?

Accepted Answer

A)   Osteosarcoma
B)   Chondrosarcoma
C)   Paget's disease
D)   Legionnaire's disease
E)   Chondroma B

Question 2

Osteosarcomas most often arise in the bones of the:

Accepted Answer

A)   Skull
B)   Vertebrae
C)   Fingers
D)   Toes
E)   Knee E

Question 3

If the overlying skin is intact,a fracture is considered:

Accepted Answer

A)   Open
B)   Closed
C)   Pathologic
D)   Simple
E)   Complex B

Question 4

The most common primary malignant tumor of bones is:

Accepted Answer

A)   Osteosarcoma
B)   Chondrosarcoma
C)   Paget's disease
D)   Ewing's disease
E)   Giant cell tumor of bone

Question 5

A tumor in a 15-year-old boy was diagnosed in the diaphysis of the tibia. On x-ray examination,it had a sunburst appearance and histologically it was composed of a uniform population of small blue cells.This tumor is a(n):

Accepted Answer

A)   Osteosarcoma
B)   Chondrosarcoma
C)   Giant cell tumor
D)   Ewing's sarcoma
E)   Metastasis from a lung cancer

Question 6

Aseptic necrosis of bones is the result of:

Accepted Answer

A)   Anemia
B)   Achondroplasia
C)   Osteomyelitis
D)   Bone infarctions
E)   Osteomalacia

Question 7

Which of the following diseases has the highest incidence among postmenopausal women?

Accepted Answer

A)   Osteoporosis
B)   Osteopetrosis
C)   Osteomalacia
D)   Achondroplasia
E)   Osteomyelitis

Question 8

Osteogenesis imperfecta is an inborn error in the synthesis of:

Accepted Answer

A)   Collagen type I
B)   Collagen type II
C)   Collagen type III
D)   Phosphate crystals
E)   Basement membranes

Question 9

If a long-bone fracture has numerous lines and fragments,it is called:

Accepted Answer

A)   Simple
B)   Greenstick
C)   Comminuted
D)   Complete
E)   Incomplete

Question 10

The bone lesions in renal osteodystrophy are caused by an excess of:

Accepted Answer

A)   ACTH
B)   Thyroglobulin
C)   Parathyroid hormone
D)   Aldosterone
E)   Androgens

Question 11

Bowlegs,craniotabes,and rachitic rosary in a growing child are signs of:

Accepted Answer

A)   Osteoporosis
B)   Osteopetrosis
C)   Vitamin B1 deficiency
D)   Vitamin D deficiency
E)   Vitamin A deficiency

Question 12

Which of the following diseases is an autosomal dominant cause of dwarfism?

Accepted Answer

A)   Achondroplasia
B)   Osteopetrosis
C)   Osteogenesis imperfecta
D)   Rickets
E)   Osteomalacia

Question 13

A benign bone tumor composed of cartilage cells is called:

Accepted Answer

A)   Osteoma
B)   Chondroma
C)   Fibroma
D)   Paget's disease
E)   Ewing's disease

Question 14

Which vitamin is essential for the formation of bones?

Accepted Answer

A)   Vitamin A
B)   Vitamin B1
C)   Vitamin B12
D)   Vitamin D
E)   Vitamin E

Question 15

The extracellular organic matrix of bones is called:

Accepted Answer

A)   Osteon
B)   Osteoid
C)   Osteoblast
D)   Osteocyte
E)   Osteoclast

Question 16

Hyperuricemia is a prerequisite for:

Accepted Answer

A)   Rocky Mountain spotted fever
B)   Gout
C)   Trench foot
D)   Lyme disease
E)   Legionnaire's disease

Question 17

Subcutaneous nodules composed of a central area of fibrinoid necrosis surrounded by macrophages and lymphocytes are typical of:

Accepted Answer

A)   Infectious arthritis
B)   Rheumatoid arthritis
C)   Osteoarthritis
D)   Gout
E)   Rickets

Question 18

The most common symptom of degenerative joint disease is:

Accepted Answer

A)   Fever
B)   Swelling
C)   Pain
D)   Ankylosis
E)   Crepitation

Question 19

Fractures that occur because the bone cannot withstand normal outside pressure and tension are known as:

Accepted Answer

A)   Open
B)   Closed
C)   Pathologic
D)   Simple
E)   Complex

Question 20

Which joint disease is characterized by destruction and loss of cartilage,sclerosis of subchondral bone,cyst formation,and osteophytes?

Accepted Answer

A)   Osteoarthritis
B)   Osteomalacia
C)   Rheumatoid arthritis
D)   Gout
E)   Infectious arthritis

Exam 19: Bones and Joints