The normal sequence of developmental stages is
a. blastocyst, morula, zygote, embryo, fetus
b. blastocyst, zygote, embryo, morula, fetus
c. morula, fetus, embryo, blastocyst, zygote
d. morula, zygote, fetus, blastocyst, embryo
e. zygote, morula, blastocyst, embryo, fetus
E
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Which of the following is not a step in endochondral bone formation?
A) Hyaline cartilage develops into the shape of the future bone. B) Osteoblasts deposit osseous tissue in place of disintegrating cartilage. C) Hyaline cartilage changes to adipose tissue. D) Periosteum forms from connective tissue outside the developing bone.
Which of the following is most likely to be damaged during CPR (cardiopulmonary resuscitation)?
A) styloid process B) mastoid process C) xiphoid process D) odontoid process E) transverse process
Lymphocytes that destroy foreign cells or virus-infected cells are ________ cells
A) B B) plasma C) helper T D) cytotoxic T E) suppressor T
The postganglionic sympathetic neurons innervating the gastrointestinal tract lie in which ganglia?
A. dorsal root ganglia B. nodose ganglia C. ventral horn of the spinal cord D. paravertebral ganglia E. prevertebral ganglia