During pulmonary ventilation, relaxation of the diaphragm and external intercostals ________ and air flows out of the lungs.
A. stimulates the phrenic nerve
B. expands the rib cage
C. increases the volume of the thoracic cavity
D. flattens the floor of the thoracic cavity
E. increases the pressure in the thoracic cavity
Answer: E
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Which of the following does not occur within the large intestine?
A. storage of feces B. re-absorption of water C. formation of feces D. absorption of fats E. production of vitamin K by bacteria
The most medial structure of the ankle and foot is the
A) medial malleolus. B) tendon of extensor hallucis longus muscle. C) tendon of tibialis posterior muscle. D) tendon of the tibialis anterior muscle. E) base of the first metatarsal.
Muscle tension does not develop in isometric contractions
Indicate whether the statement is true or false
The action potential on the muscle cell leads to contraction due to the release of calcium ions. Where are calcium ions stored in the muscle cell?
A) cytosol B) sarcolemma C) T tubule D) terminal cisternae of the sarcoplasmic reticulum