A triad consists of:
A) a transverse tubule (T-tubule) and two terminal cisternae.
B) myosin filaments, myosin heads, and myosin tails.
C) actin filaments, troponin, and tropomyosin.
D) a fascicle of skeletal muscle cells and its surrounding perimysium.
Answer: A
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A) coronary arteries B) coronary veins C) coronary sinus D) fossa ovalis
Microtubules
a. serve as a mechanical stiffener for microvilli. b. are specialized to detect sound and positional changes in the ear. c. form nonmuscle contractile assemblies. d. play a structural role in parts of the cell subject to mechanical stress. e. none of these answers.
The enlarged region at the distal end of the penis is called the ____
a. prepuce b. shaft c. glans penis d. vulva
Synovial fluid is
A. a watery fluid produced by capsular ligaments. B. an oily fluid produced by articular cartilage. C. a watery fluid produced by hyaline cartilage. D. an oily fluid produced by the synovial membrane.