Tommy fell and skinned his knee. The scrape did not bleed. He must have only damaged the:
A) hypodermis. B) dermis.
C) subcutaneous layer. D) epidermis.
Answer: D
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Which of the following best describes hydroxyapatite?
A. A secretion of the osteoclasts B. Dissolved minerals in the tissue fluid C. Dissolved minerals in the blood plasma D. Fibrous protein in the bone matrix E. Calcium phosphate in the bone matrix
How does altitude affect blood composition and why? How would athletes' performance be affected if they live, train, and compete at different altitudes? Explain your answer, using different scenarios. Is such training a type of doping? Explain.
What will be an ideal response?
Axons of the anterior corticospinal tracts decussate in the medulla.
Answer the following statement true (T) or false (F)
The proximal convoluted tubule is
A. lined with epithelial cells that lack microvilli. B. the site of glucose and amino acid reabsorption. C. permeable to water if ADH is present. D. impermeable to water. E. the site of water secretion.