By increasing heart rate, raising blood pressure, and irritating the heart, smoking can trigger an irregular heartbeat known as ____.
A. arrhythmia
B. hypotension
C. myocardial infarction
D. angina pectoris
E. atherosclerosis
Answer: A
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The midbrain, pons, and medulla oblongata make up the ________________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. Hormones from the anterior pituitary gland stimulate ovulation. 2. The breasts provide nourishing milk for the embryo. 3. The plural of ovum is ova. 4. The finger-like projections off the ovary are called fimbriae. 5. Menopause marks the end of the childbearing years.
An adult human brain weights roughly ____ pound(s)
a. one-half b. one c. two d. three e. four
A very serious autoimmune disease characterized by muscular weakness is known as:
A) dystrophy. B) myasthenia gravis. C) atrophy. D) myalgia.