Answer to Question 1
B
A physical exercise program has many benefits. People who exercise daily for 30 to 60 minutes, not 90, have a lower heart rate, lower blood pressure, decreased cholesterol, increased blood flow, and greater oxygen extraction by working muscles. Fully conditioned people are able to increase oxygen consumption by 10 to 20 because of increased cardiac output and efficiency of the myocardium. If the diet does not supply iron needed for hemoglobin synthesis, RBC synthesis is reduced, and oxygen-carrying capacity decreases. A risk factor for cardiopulmonary disease is excessive use of caffeinated energy drinks.
Answer to Question 2
A, B, C
Behaviors that establish your presence include giving attention, answering questions, listening, and having a positive and encouraging (but realistic) attitude. Presence is part of the art of nurs-ing that involves being with a patient versus doing for a patient, as in administering medica-tion and speaking with the family. Presence is being able to offer closeness with the patient, which helps to prevent emotional and environmental isolation.
Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
Mary Cassatt, Young Mother, Daughter, and Son.
In middle childhood, children spend increasing amounts of time with peers and friends.
Energy of reactant molecules.
The Visible Spectrum of Electromagnetic Energy
The mitochondrion is the center of energy transformation in the cell