On a microtubule, the motor molecule called ____________________ moves toward a centriole
Fill in the blank(s) with correct word
dynein
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Ions with a + charge are called
A) cations. B) anions. C) radicals. D) positrons. E) isotopes.
The lymph ducts in the thoracic cavity drain into the:
A) inferior vena cava. B) junction of the brachiocephalic vein and the superior vena cava. C) junction of the internal jugular vein and subclavian vein. D) external jugular veins.
The type of muscle fibers that are striated, form Y-shaped branches, and are joined by intercalated discs are
A. skeletal. B. cardiac. C. smooth. D. voluntary. E. skeletal and voluntary.
Factors that influence the rate and depth of breathing include ________
A) stretch receptors in the alveoli B) temperature of alveolar air C) voluntary cortical control D) thalamic control