Here is a figure showing major trunk cavities and other structures. What does "A" represent?
A. diaphragm
B. mediastinum
C. pelvic cavity
D. thoracic cavity
E. abdominal cavity
B
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Why is the skin capable of repair, even after serious damage?
A) All layers of the skin have an excellent blood supply. B) Stem cells persist in both the epidermis and dermis. C) Individual skin cells have a high metabolic rate. D) There are abundant fibroblasts in the epidermis. E) Construction of scar tissue is easier than making normal skin.
Why don't zebras fit into the relationship of body size, diet, and social system seen among antelope?
What will be an ideal response?
Which of the following describes muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
A. Aponeurosis B. Inverted attachment C. Direct attachment D. Indirect attachment
The Na+ and K+ channels that open during an action potential are voltage-regulated, both opening in response to depolarization of the membrane.
Answer the following statement true (T) or false (F)