Explain the role of the hypothalamus in body temperature regulation
What will be an ideal response?
The hypothalamus acts as the body's thermostat and creates a set point, or normal body temperature (about 37° C, or 98.6° F). The hypothalamus receives input from temperature-sensitive neurons in locations such as the skin and from neurons in the hypothalamus itself. When the body temperature increases above the set point, a negative feedback loop is initiated. Certain hypothalamic nuclei induce changes, such as sweating, to cool the body. When the body temperature decreases below the set point temperature, another negative feedback loop is initiated to conserve body heat.
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Osteogenesis imperfecta is
A. a disease in adults, especially women, characterized by a reduced amount of bone matrix. B. a disease in adults characterized by softening of bones resulting from calcium depletion. C. bone inflammation that often results from bacterial infection. D. a group of genetic disorders producing very brittle bones that are easily fractured; occurs because of insufficient collagen development. E. a disease in children characterized by soft, bowed, and swollen bones.
Which of the following terms means "farther from the head"?
A. distal B. proximal C. superior D. inferior
The sounds heard when determining blood pressure are known as __________ sounds
Fill in the blank(s) with correct word
Mucus is moved along the lining of the trachea by extensions from cell membranes known as
A. flagella. B. microvilli. C. cilia. D. stereovilli.