What is ATP used for in the process of muscle contraction?
A. Power stroke of myosin cross-bridge
B. Pump calcium ions back into the sarcoplasmic reticulum
C. Release of myosin from actin
D. All apply.
Answer: D
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Lymph containing a high lipid content is called ________.
A. chyme B. interstitial fluid C. chyle D. lacteal
The plasma membrane of the muscle fiber is known as the
A) cell surface membrane. B) sarcolemma. C) sarcoplasm. D) sarcoplasmic reticulum.
Describe a hydrogen bond
What will be an ideal response?
Draw graphs showing the effects on action potentials in a postsynaptic cell of effective doses for each of the listed toxins. Assume that the cell is normally brought to threshold by the stimuli applied to its inputs, so that any abnormality is due to the toxin.
1. curare (prevents receptor from binding neurotransmitter) 2. botulinum toxin (prevents neurotransmitter release)