Why can smooth muscle contract over a wider range of resting lengths than skeletal muscle?
A) smooth muscle has tight junctions to keep the fibers anchored
B) in smooth muscle the actin and myosin are more loosely organized
C) in smooth muscle intercalated discs are found between the fibers
D) in smooth muscle the T tubules allow efficient transmission of the action potential
E) smooth muscle has fewer layers than skeletal muscle
Answer: B
You might also like to view...
The metatarsophalangeal joints of the foot resemble which joints of the hand?
A) radiocarpal joints B) carpometacarpal joints C) interphalangeal joints D) metacarpophalangeal joints E) None of the answers are correct.
The recent discovery of taste receptors in the small intestine that detect sweetness
illustrates that A) new discoveries about anatomy and physiology are still being made. B) the molecular and cellular levels are of little interest in anatomy and physiology. C) chemical responses occur in only one part of the body. D) everything there is to know about anatomy and physiology has been discovered.
____ has a positive effect on appetite
a. CCK b. PYY3-36 c. Leptin d. Insulin e. Ghrelin
Which joint type is held together by a band, or sheet, of fibrous connective tissue?
A) Suture B) Syndesmosis C) Synovial joint D) Synchondrosi