Most of the accessory structures of the skin are found in the dermis.
Answer the following statement true (T) or false (F)
True
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Vascular spasm is triggered by blood vessel injury and further triggered by the release of serotonin
Indicate whether this statement is true or false.
What are cell exons and introns?
What will be an ideal response
When an antigen triggers the multiplication of B lymphocytes, some daughter cells transform into antibody-producing cells and mount an attack, while others become what?
A. Suppressor cells B. Helper cells C. Plasma cells D. Natural killer cells E. Memory cells
How does the urinary system contribute to osteoporosis?
A. Calcium ions released from the bones are excreted as part of urine. B. Excessive smoking lowers calcitriol levels, which decreases bone loss. C. Decreased estrogen levels following menopause contribute to the disease. D. Lack of exposure to sunlight increases vitamin D production at the kidneys and decreases calcium absorption. E. Immune cells of the kidneys absorb excess calcium under the direction of PTH.