The glenoid cavity of the ________ articulates with the head of the ________.
A. scapula; humerus
B. humerus; scapula
C. scapula; sternum
D. sternum; humerus
E. radius; humerus
Answer: A
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The skin pigment that provides protection from ultraviolet radiation is ________, which is produced by ________.
A. hemoglobin; blood cells B. melanin; melanocytes C. carotene; hypodermal cells D. melanin; dermal cells
Which of these hormone pairs have antagonistic (opposite) effects?
A. Melatonin and insulin B. Oxytocin and follicle-stimulating hormone C. Antidiuretic hormone and growth hormone D. Thyroxine and triiodothyronine E. Calcitonin and parathyroid hormone
Identify the notable risk factor associated with breast cancer.
A) family history of breast cancer B) poor diet C) pregnancy before age 21 D) late menarche E) early menopause
Which statement is true regarding hair?
A) The cells found in the shaft are dead. B) The hair root is located in the epidermis. C) The cells are non-keratinized to maintain softness. D) The cells found in the hair that extends out of the skin are living.