During muscle contraction, myosin heads attach to actin and thereby form connections called ______________
Fill in the blank with correct word.
crossbridges
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The cells responsible for establishing the rate of a cardiac contraction are the ________.
Fill in the blank(s) with the appropriate word(s).
The smallest arteries in the lungs that provide blood to the capillary networks that surround the lung air saccules are the
A) left and right pulmonary arteries. B) pulmonary veins. C) ascending aorta. D) pulmonary arterioles. E) alveoli.
In a resting neuron, the area just inside of the cell membrane is more _____ than the area just outside of the cell membrane.
A. positive B. negative
This figure shows the bones of the ankle and foot. What view is shown?
A. Inferior view of left ankle and foot B. Superior view of left ankle and foot C. Superior view of right ankle and foot D. Ventral view of right ankle and foot E. Lateral view of right ankle and foot