Answer the following questions true (T) or false (F)
1. The stimuli for contraction of the heart come from within the heart rather than from the nervous system.
2. The left ventricle pumps blood into the pulmonary artery.
3. Inflammation is a typical part of the initial process that can result in a heart attack.
1. TRUE
2. FALSE
3. TRUE
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Loss of water from the aerial parts of plants is called _____
A) dehydration B) high heat of vaporization C) respiration D) gas exchange E) transpiration
The diaphragm is a sheet-like skeletal muscle that separates the
a. thoracic and pleural cavities. b. thoracic and pericardial cavities. c. thoracic and abdominopelvic cavities. d. pleural and pericardial cavities.
DNA analysis reveals that two species of birds appear to have evolved from a common ancestor. These two species belong to the same
A) nest group. B) species. C) gene pool. D) clade. E) breeding group.
Birds follow a herd of water buffalo to catch insects that are disturbed as the large herbivores walk through the grass. When large predators are near, the birds fly into the air and make warning calls. Who are the birds warning?
A) Other birds, who also catch insects stirred up by the water buffalo B) The water buffalo, so they can avoid attack C) Their competitors D) The predators, so they know their prey, the water buffalo, is near E) The water buffalo's prey, because they need to escape