Haustra are
A) expansible pouches of the colon.
B) strips of muscle in the colon.
C) glands in the large intestine that secrete mucus.
D) the source of colon hormones.
E) compact feces stored in the rectum.
Answer: A
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Neural tissue
A) carries information from one part of the body to another. B) can contract. C) fills spaces in the body. D) stores energy. E) forms glands.
The focal point is the
A) Point between the center of the lens and the retina. B) Point where light waves converge after passing through the lens. C) Small region in the center of the retina responsible for high-acuity vision. D) Narrow band of the electromagnetic spectrum that contains visible light.
Neurons may be classified according to several characteristics. Which of the following is correct?
A) Group A fibers are mostly somatic sensory and motor and are the smallest in diameter. B) Group B fibers are highly myelinated and have the highest conduction velocities. C) Group C fibers are not capable of saltatory conduction. D) A small cross-sectional area allows shorter conduction times.
Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A serum but not with the anti-B. Therefore this is true:
A) Bill's plasma contains B antibodies. B) Bill could donate blood to an individual with type B blood. C) Bill could receive type B blood in a transfusion. D) Bill's plasma would cross-react with type O red blood cells. E) Bill is Rh positive.