The region of the sarcomere that always contains thin filaments is the
A) Z line.
B) M line.
C) H band.
D) A band.
E) I band.
E
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Which of the following statements about giant axons is NOT true?
a. They can be found in annelids and cockroaches. b. They can be unicellular. c. They are involved in the coordination of abrupt movements. d. They were first identified and studied in squid. e. They may arise as the result of fusion of smaller fibers.
Cardiac output is usually expressed in
A. mL per beat. B. mm Hg. C. liters per minute. D. beats per minute.
The trabeculae of spongy bone
A) are organized parallel to the long axis of the bone. B) are organized along stress lines. C) are composed mostly of cartilage. D) will collapse under stress. E) are concentrated in the cortex of the diaphysis.
A traumatic injury to the umbilical region could affect which segments of the small intestine?
A) only the duodenum would be affected B) only the jejunum would be affected C) only the ileum would be affected D) the duodenum and jejunum would be affected E) all three segments of the small intestine would be affected