List and explain the five survival needs of humans
What will be an ideal response?
1. Nutrients include carbohydrates, proteins, fats, and vitamins and minerals, which are taken in via the diet for energy and cell building.
2. Oxygen is required to release energy from food.
3. Water accounts for 60 to 80 percent of the body weight, and provides the basis for various body fluids.
4. Normal body temperature should be around 37°C or 98°F. When body temperature becomes too high or too low, physiological activities cease, primarily because chemical reactions are affected.
5. Appropriate atmospheric pressure is the force exerted on the surface of the body by the weight of air; it is essential for normal operation of the respiratory system and breathing.
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Which of the following statements regarding brown fat is false?
A) Brown fat is found in infants. B) Brown fat functions in nonshivering thermogenesis. C) Brown fat contains a rich vascular supply. D) Brown fat is innervated by the sympathetic nervous system. E) Brown fat is concentrated around visceral organs in the adult.
Which of the following is the abnormal curve often seen in pregnant women as they attempt to preserve their center of gravity toward the end of the pregnancy?
A) kyphosis B) hunchback C) scoliosis D) lordosis
How does a herniated disc differ from a bulging disc?
A. The nucleus pulposus breaks through the anulus fibrosus B. The posterior longitudinal ligaments are weakened C. I?t is a normal part of aging D. I?t does not affect the spinal nerves
The S-T segment of an ECG represents ________.
A. ventricular depolarization B. passage of the electrical impulse to the atrioventricular node C. atrial depolarization D. the plateau phase of the myocardial action potential