________ run perpendicular to the long axis of the bone and contain blood vessels that carry blood from the medullary cavity and periosteum to the osteon.
A. Lamellar canals
B. Canaliculi
C. Haversian canals
D. Osteochondral canals
E. Perforating canals
Answer: E
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During the beginning of ventricular systole when the muscle is contracting but not enough pressure has built up to open the semilunar valves the heart is said to be in
A) atrial kick. B) isovolumetric contraction. C) isovolumetric relaxation. D) atrial systole. E) passive ventricular filling.
In most excitable cells, the rising phase of the action potential is due to
a. calcium efflux b. potassium efflux c. chloride influx d. potassium influx e. sodium influx
Arteriosclerosis can lead to all of the following except
A) hypertension. B) stroke. C) coronary artery disease. D) myocardial infarction. E) diabetes.
Compared to the shoulder, displacements of the hip joints are ________
A) rare because of the ligament reinforcement B) common due to the weight bearing the hip endures C) rare because the rotator cuff stabilizes the hip joint D) common in all people who are overweight