Since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber
A) lengthens.
B) shortens.
C) strengthens.
D) weakens.
E) There is insufficient information to determine the answer.
Answer: B
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A two-way gut system (i.e., gastrovascular cavity) is a characteristic of
A) Platyhelminths. B) Annelids. C) Arthropods. D) Molluscs.
Matching
A) D B) A C) B D) E E) C 12) Trapezius muscle. 13) Teres major muscle. 14) The latissimus dorsi. 15) Rotates scapula. 16) Retract scapula. 17) Levator scapulae.
Matching
A) Glomerular capillaries B) Vasa recta C) Afferent arterioles D) Peritubular capillaries E) Efferent arterioles 21) Low pressure, porous vessels that reabsorb solutes and water from the tubule cells. 22) High pressure vessel that forces fluid and solutes into the glomerular capsule. 23) May form meandering vessels or bundles of long straight vessels. 24) Play a role in urine concentration. 25) Fenestrated vessels that allow passage of all plasma elements but not blood cells.
The study of body function in a disease state is
A) pathophysiology. B) microbiology. C) necrology. D) physiology. E) histology.