Which embryonic tissue gives rise to the epidermis?
A. Ectoderm
B. Mesoderm
C. Mesenchyme
D. Endoderm
E. Squamous epithelium
A. Ectoderm
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ATP is most closely related to
A) a fatty acid. B) an amino acid. C) a monosaccharide. D) a nucleotide. E) cholesterol.
The third stage of labor
a. involves dilation of the cervix to 10 cm b. refers to the actual birth of the baby c. occurs when the entire uterine contents shift downward and the head of the fetus is positioned against the cervix d. involves delivery of the placenta e. is characterized by rupture of the membranes surrounding the amniotic sac
Vanessa takes many vitamin supplements, claiming that they give her energy. She is mistaken because cells preferentially use ________ for energy.
A. carbohydrates B. amino acids C. proteins D. minerals
Preganglionic fibers of the autonomic efferent pathway are ________ and secrete ________
A) myelinated; acetylcholine (ACh) and norepinephrine(NE) B) unmyelinated; acetylcholine (ACh) C) myelinated; acetylcholine (ACh) D) myelinated; norepinephrine (NE) E) unmyelinated; norepinephrine(NE)