In the positive feedback mechanism governing breastfeeding, the mammary glands of the breast serve as the
A. control center.?B. receptor.?C. effector.?D. set point.
C
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Which of the following is an autoimmune disease that affects the joints?
a) gouty arthritis b) Lyme disease c) arthroplasty d) osteoarthritis e) rheumatoid arthritis
Which of the following would apply to the description of a thyroid follicle?
A. Center is called the isthmus B. Walls contain a single layer of parafollicular cells C. Stores thyroid hormone D. Small capillary networks E. Spheres with walls of a single layer of cuboidal epithelial cells
What is the difference between parallel and convergent evolution?
What will be an ideal response?
Why is basal cell carcinoma considered less dangerous than malignant melanoma?
A) Basal cell carcinoma affects the stratum basale only and will not spread to any other layer, whereas malignant melanoma affects the melanocytes which can be found throughout the epidermis. B) Basal cell carcinoma affect the cells of the stratum basale which cannot form tumors, whereas malignant melanoma affects the melanocytes which form cancerous tumors. C) Basal cell carcinoma only occurs in the elderly, whereas malignant melanoma occurs in children and young adults. D) Basal cell carcinoma only occurs on the face, whereas malignant melanoma can occur anywhere on the body. E) Basal cell carcinomas rarely become malignant and metastasize, whereas malignant melanoma cells quickly spread throughout the lymphatic system to other organs.