Malignant melanoma is a particularly dangerous form of skin cancer because ________

A) it may become aggressive, rapidly spread via the lymphatic system, and have a high mortality rate
B) this type of cancer is most commonly localized to specific areas of the skin and rarely metastasizes
C) exposure to UV rays from the sun cause the DNA in cells of the stratum basale to mutate
D) slowly dividing melanocytes readily enter the lymphatic system


A

Anatomy & Physiology

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What anatomical features allow for the expansion of the urinary bladder as it fills with urine?

A. Rugae and transitional epithelium B. Rugae and columnar epithelium C. Plicae and elastic connective tissue D. Plicae and stratified squamous epithelium

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The lungs deliver a regular supply of oxygen to the blood, which is in turn circulated to most all the cells of the body. At the same time oxygen is consumed during aerobic cellular respiration within these cells. This implies that ________

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