If your adrenal cortex was producing high levels of aldosterone, it would cause your urine to have
A) high Na+ and low K+ concentrations
B) low Na+ and high K+ concentrations
C) high Na+ and high K+ concentrations
D) low Na+ and low K+ concentrations
E) none of the above - aldosterone would not affect the urine
Ans: B) low Na+ and high K+ concentrations
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Which of the following is the correct sequence of events in the healing of a bone fracture?
A. Hematoma formation ? hard callus formation ? soft callus formation ? bone remodeling B. Soft callus formation ? hard callus formation ? hematoma formation ? bone remodeling C. Bone remodeling ? soft callus formation ? hard callus formation ? hematoma formation D. Hematoma formation ? soft callus formation ? hard callus formation ? bone remodeling E. Bone remodeling ? hard callus formation ? soft callus formation ? hematoma formation
The walls of lymphatic capillaries are only one cell thick.
Answer the following statement true (T) or false (F)
What is the role of tropomyosin in a sarcomere?
A. It is the main protein component of thin myofilaments. B. It is the main protein component in thick myofilaments. C. It blocks the active sites on actin filaments in relaxed muscle fibers. D. It binds to calcium to initiate muscle contraction. E. It is the main component of elastic filaments.
Elastic connective tissue forms
A) branching networks or parallel strands. B) cartilage. C) bones. D) ligaments and tendons.