The fibrous skeleton of the heart is important because it
A) helps guide the blood into the proper chambers in sequence.
B) transmits electrical activity from the atria to the ventricles.
C) directs the flow of blood into the arteries.
D) forces electrical activity to be conducted through the atrioventricular node.
D) forces electrical activity to be conducted through the atrioventricular node.
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Psyche is a Greek word meaning _______
A. essence B. sout C. behavior D. love
Which of the following can cause demyelination?
A) arsenic poisoning B) diphtheria C) multiple sclerosis D) mercury exposure E) Demyelination can be caused by arsenic, diphtheria, multiple sclerosis and mercury.
Anosmia may result from head injuries in which the cribriform plate of the ethmoid bone is fractured. This condition results in impaired function of which cranial nerve in the diagram?
a) A b) B c) C d) D e) E
The layers of boney matrix surrounding the blood vessel in an osteon are know as ____.
a) lacunae b) trabeculae c) canaliculi d) lamellae