What is the prime mover of elbow flexion?
A. Brachioradialis
B. Brachialis
C. Triceps brachii
D. Biceps brachii
Ans: B. Brachialis
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To reduce brain swelling by pulling water out of brain cells, a substance can be injected intravenously to increase the osmotic pressure of interstitial fluid. Which of the following properties must this substance lack in order to be effective?
A) permeable to capillary endothelium B) nontoxic to neurons C) permeable to brain plasma membranes D) impermeable to brain plasma membranes E) soluble in water
A biochemical important in glomerulus formation in the embryo is
A. ADH. B. VEGF. C. ADP. D. renin.
Answer the following questions true (T) or false (F)
1. Solutions with a pH less than 7 are considered basic or alkaline. 2. Growing new muscle proteins through the assembly of amino acids is a type of dehydration synthesis reaction. 3. Like the carbohydrates, lipids have twice the hydrogen atoms as carbon and oxygen atoms in their molecular structures.
Many athletes train at higher altitudes immediately prior to an athletic competition. Select the scenario that correctly identifies how acclimatization to a higher elevation would improve endurance performance.
A. A hypoxic ventilatory response occurs that remains in place for a few weeks after returning to a lower altitude. B. Increased ventilation at the higher altitudes will improve tidal volume when returning to the lower altitude. C. Erythropoietin release will increase; consequently, the athlete will have a greater aerobic capacity when returning to the lower altitude. D. Hemoglobin's affinity for oxygen will increase; therefore, tissues will receive more oxygen during exercise.