When the ________ contracts it flattens, the thorax expands, and air is drawn into the lungs.
Fill in the blank(s) with the appropriate word(s).
diaphragm
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The human body has only one of which of the following vessels?
A. Brachiocephalic trunk B. Median cubital vein C. Anterior communicating artery D. Brachiocephalic vein E. Common iliac artery
Answer the following statement(s) true (T) or false (F)
1. Intramembranous ossification is common in children, whereas endochondral ossification is typical in young adults. 2. Bones grow in diameter by interstitial growth. 3. Closed reduction is the surgical realignment of the parts of a broken bone. 4. Osteoporosis often leads to an exaggerated thoracic spinal curvature, which is called kyphosis.
Proteins encode nucleic acids
Indicate whether the statement is true or false
The two major regulatory systems in the body are
a. nervous and respiratory b. nervous and endocrine c. endocrine and respiratory d. endocrine and lymphatic e. circulatory and endocrine