A 21-year-old man receives a penetrat- ing knife wound in the abdomen and is injured in both the superior mesenteric artery and the vagus nerve. Which portion of the colon would most likely be impaired by this injury?
(A) Ascending and descending colons
(B) Transverse and sigmoid colons
(C) Descending and sigmoid colons
(D) Ascending and transverse colons
(E) Transverse and descending colons
Ans: (D) Ascending and transverse colons
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Answer the following statements true (T) or false (F)
1. When a muscle fiber contracts, the I bands diminish in size, the H zones disappear, and the A bands move closer together but do not diminish in length. 2. Contractures are a result of a total lack of ATP. 3. The amount of movement permitted by a particular joint is the basis for the functional classification of joints. 4. All joints permit some degree of movement, even if very slight. 5. Hinge joints permit movement in only two planes.
The fibrocartilage rim that deepens the hip socket is the
A. glenoid labrum. B. acetabular labrum. C. coxal retinaculum. D. obturator membrane.
Clinical features of systemic lupus erythematosus include all of the following except:
A) Typical skin rash on face B) Inflammation of joints C) Cardiac rhythm disturbances D) Fatigue
Which cell type sends electrical signals?
A. Microglia B. Neurons and microglia C. Neuroglial cell D. Neuron