Muscoskeletal system MCQs Past papers MBBS

1. Ascites is an effusion in the

A.   biliary system

B.   intestinal tract

C.   pericardial cavity

D.   peritoneal cavity (*)

E.   pleural cavity

2.   Which mechanism is LEAST LIKELY to produce edema?

A.   any obstruction of venous drainage

B.   dilated arterioles (*)

C.   extra-permeable microvasculature

D.   low plasma protein

E.   plugged lymphatic vessels

3.   About how much of your blood do you need to lose in order to

go into hypovolemic shock?

A.   5%

B.   10%

C.   25%

D.   40% (*)

E.   60%

4.   Widespread venous thrombosis is a notorious paraneoplastic

effect of the common primary

cancer arising in which organ?

A.   lung ("oat cell carcinoma")

B.   colon

C.   liver

D.   pancreas (*)

E.   prostate

5.   Watershed infarcts are LEAST LIKELY to occur in the

A.   brain

B.   heart

C.   large intestine

D.   spleen (*)

E.   they are common in all these locations

6.   Which is LEAST LIKELY to render the blood more viscous,

i.e., harder to pump through narrow

vessels?

A.   abundant marginally-soluble protein ("cryoglobulinemia")

B.   excessive IgM ("macroglobulinemia")

C.   lead poisoning (*)

D.   polycythemia (excess number of red cells)

E.   sickle cell disease

7.   Which are you LEAST LIKELY to see in tissue from a joint

with rheumatoid arthritis?

A.   fibrin

B.   lymphocytes

C.   plasma cells

D.   pus (*)

E.   scar tissue

8.   Which form of arthritis often causes fibrosis of the lungs

in addition to the joint troubles?

A.   ankylosing spondylitis

B.   Lyme arthritis

C.   osteoarthritis

D.   Reiter's syndrome

E.   rheumatoid arthritis (*)

9.   Kashin-Beck, the crippling arthritis which is prevalent in

central Asia, results from

A.   a virus, possibly parvo B19

B.   environmental pollution and malnutrition (*)

C.   lack of sunlight in women who must stay hidden

D.   mutation of a gene for a cartilage protein

E.   mutation of a gene involving immune response

10.  What's the cell of origin of a hibernoma?

A.   brown fat (*)

B.   hibernating fibroblast

C.   mast cell

D.   skeletal muscle

E.   smooth muscle

11.  Which cell apparently isn't doing its job in osteopetrosis?

A.   marrow fibroblast

B.   marrow macrophage

C.   osteoblast

D.   osteoclast (*)

E.   osteocyte

12.  People with myasthenia gravis very often already have a

tumor of the

A.   lung

B.   skeletal muscle

C.   stomach

D.   thymus (*)

E.   thyroid

13.  Susceptibility to malignant hyperthermia results from

A.   injury or disease in the hypothalamus

B.   depletion of body sodium stores

C.   mutated calcium channels (*)

D.   overproduction of endogenous pyrogens / cytokines

E.   use of anabolic steroids from the gym