Which of the following determines the force production in muscle contraction?
a. the amount of acetylcholine released into the synapse
b. the speed of the acetylcholinesterase acting to break down acetylcholine
c. the number of myofibers receiving an action potential from the neuron
d. the length of the sarcomeres involved in the contraction
c. the number of myofibers receiving an action potential from the neuron
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Chlorhexidine
A. is a member of the biguanides. B. is extensively used in antiseptics. C. is ineffective against vegetative bacteria. D. is limited in use due to its high toxicity. E. is a member of the biguanides AND is extensively used in antiseptics.
Blood pressure drives filtration in the ____
a. urethra b. renal artery c. glomerulus d. plasma e. sodium-potassium pumps
Following running for a long distance, the muscle soreness that occurs the next day is due to chemicals released to repair damaged muscles
Indicate whether the statement is true or false
Many plants wind up with a Na+ concentration that is considerably lower than that of the surrounding soil. What plays a key role in allowing for such a difference to exist?
a. endodermis b. tonoplast c. aquaporin d. water potential