Within a single fiber, the tension developed during a twitch depends upon the
A) amplitude of the action potential.
B) length of the sarcomeres prior to contraction.
C) duration of the stimulus.
D) length of the thick filament.
B) length of the sarcomeres prior to contraction.
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Adaptation of the olfactory sense to the continued presentation of an odorant
a) occurs rapidly. b) increases sensitivity to that odorant. c) occurs slowly. d) does not occur. e) enhances gustation.
Answer the following statements true (T) or false (F)
1. Tonic contractions provide rapid movement for skeletal muscles. 2. Good posture can be defined as holding the body parts in the position that favors best function. 3. The production of heat is a primary function of the muscular system. 4. Hypothermia refers to a dangerous elevation in body temperature. 5. The breakdown of ATP is the energy source that helps supply heat to the body.
Which of the following is a semilunar valve within the heart?
A. Mitral valve B. Bicuspid valve C. Aortic valve D. Tricuspid valve
The opposite of a dehydration synthesis reaction is a hydrolysis reaction.
Answer the following statement true (T) or false (F)