Sympathetic fibers leave the spinal cord in the ________.
A. lumbar and sacral regions
B. cranial and thoracic regions
C. cranial and sacral regions
D. thoracic and lumbar regions
E. cervical and sacral regions
Answer: D
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Progesterone
A. increases uterine tube motility. B. causes cellular degeneration in the endometrium. C. causes cellular hypertrophy in the endometrium. D. causes uterine muscle contractions. E. causes ovulation.
Which skin condition is characterized by inflammation of the skin caused by a direct contact with a skin irritant or an allergic reaction?
A. Dermatitis B. Warts C. Psoriasis D. Scleroderma
Immediately after an action potential is propagated, which one of the following ions rapidly diffuses out of the cell into the tissue fluid?
A) sodium ions
B) chloride ions
C) calcium ions
D) potassium ions
E) magnesium ions
What are the two layers of the embryonic disc?
A. Mesoderm and ectoderm B. Epiblast and hypoblast C. Cytotrophoblast and syncytiotrophoblast D. Myotome and dermatome E. Mesoderm and endoderm