This is a sagittal section through the abdominopelvic cavity. What structure does "A" represent?
A. visceral peritoneum (covers organs)
B. mesentery
C. parietal peritoneum (lines cavity)
D. retroperitoneal organs
E. peritoneal cavity
B
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Match each term with its definition or description.
a. zygote b. morula c. blastocyst d. placenta e. fetus f. embryo g. ectoderm h. mesoderm i. endoderm j. histogenesis k. amniotic cavity l. implantation m. organogenesis n. fertilization o. yolk sac 1. _____ Connecting “bridge” between mother and baby 2. _____ Term used to describe the developing baby during the first 8 weeks 3. _____ Term used for the fertilized egg 4. _____ Term used to describe the development of tissues 5. _____ Term used to describe the developing baby from week 9 to week 39 6. _____ Term for the solid mass of cells formed by the fertilized egg about three days after fertilization 7. _____ Primary germ layer that forms the lining of the gastrointestinal tract 8. _____ Term for the hollow ball of cells the fertilized egg has formed by the time it reaches the uterus 9. _____ Primary germ layer that forms the brain and spinal cord 10. _____ Primary germ layer that forms muscles 11. _____ Moment when the ova and sperm unite 12. _____ Embedding of the blastocyst into the uterine wall 13. _____ Source of nutrients in birds, but produces blood cells in humans 14. _____ Fluid-filled shock-absorbing sac sometimes called the bag of waters 15. _____ Process by which tissues arrange themselves into organs
Match the mineral with its function.A. Functions in carbon dioxide metabolism and transport, also needed for protein metabolismB. Component of hemoglobinC. A constituent of coenzymes; needed for bone formation and proper function of nerve and muscleD. Needed for the production of thyroxineE. Component of nucleic acids and ATP; used in bone formationIron
Fill in the blank(s) with the appropriate word(s).
Which is not a general function of the nervous system?
A. Collecting information B. Responding to information C. Processing and evaluating information D. Transporting materials throughout the body E. No exceptions; all are general functions of the nervous system.
What type of gradient cause the movement of ions due to both charge and concentration differences?
A. concentration gradient B. pressure gradient C. electrochemical gradient D. thermal gradient