In fishes and amphibians, spongy myocardium receives oxygen from
A) Blood in the heart chambers.
B) Coronary arteries.
C) Trachea.
D) Pericardial fluid.
Answer: A
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The basal nuclei
A) initiate conscious motor activity. B) activate spinal reflexes. C) provide the background patterns of movement involved in voluntary motor activities. D) exert direct control over lower motor neurons. E) act as gatekeepers, filtering out unnecessary sensorimotor activity.
More blood is delivered to the tissues during ventricular systole than during ventricular diastole
Indicate whether the statement is true or false
Identify the types of synovial joints
A) finger, elbow, knee, saddle and ball-and-socket joint B) plane, hinge, pivot, condylar, saddle, and ball-and-socket joint C) dovetail, finger, tongue-in-grove, and extension joint D) bridle, stifle, girdle, and pivot joint E) pivot, hinge, finger, saddle, stifle, and extension joint
Another name for the pinna of the external ear is the ________.
A. external auditory meatus B. ear drum C. tympanic membrane D. auricle