Glossary of Lab 10 Reproduction and development
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- What are the five different groups you will examine?
- arthropods (fruitflies), echinoderms (sea urchin), amphibians (forgs), birds (chicken), and mamals (rat)
- What are the three fundamental differences in development?
- cleavage patterns and associated control processes, fate of the blastopore, and coelom formation
- What is different btwn protostomes and deuterostomes during cleavage?
- protostomes show a sprial cleavage pattern and deuterostomes show radial cleavage pattern
- initial cell divisions of embryo. during cleavage a large cell is cleaved into smaller cells without growth
- Which of the two protostomes or deuterostomes have determinate type of development?
- protostomes embryonic cells is determined very early. If damaged early cannot "regulate".
- In protostomes the blastopore will eventually become what?
- the mouth
- In deuterostomes the blastopore will eventually become what?
- the anus, with the mouth arising secondarily
- cells migrate from the surface inward to form a cavity, the archenteron
- an inward cavity
- How is coelom formed during gastrulation for protostomes?
- solid masses of mesodermal cells split to form the coeloms
- How is coelom formed during gastrulation for deuterostomes?
- formed by the outpocketing of mesodermal cells associated with the archenteron
- mammals typically have _______ production of gametes.
- non-primate undergo ____ cycle
- estrous cycle
- Describe the oogenesis in primates
- After DNA rep but prior to first meiosis there is a primary oocyte. 2N 4C. AFter first meiotic division two daughter cells, secondary oocyte. 1N 2C.
- seminiferous tubules
- site of spermatogenic cells
- fairly mature sperm cells; with tail; found in lumen of semniferous tubule
- interstitial cells
- small clumps of cells between the seminiferous tubules that produce testosterone
- coiled tube on the surface of the testis. Maturation of sperm occurs here
- vas deferens
- duct that is the distal extension of the epidiymis
- primary follicle
- small, single-layered cluster of cells surrounding a developing ovum; as the folice develops it secretes nutrients for the ovum; in additon, the follicular cells secrete estrogen
- mature follicle
- very large follicles, bulging from surface of ovary.
- egg cell
- corpus luteum
- large mass of cells formed from the follicle after ovulation; secretes estrogen and progesterone
- What happens when sperm penetrates the jelly coat and fuses with the cell membrane?
- 1. rapid depolarization from negative to a positive cell membrane potential. (fast block)
2. fusion of cortical vesicles with the egg cell membrane
3. vesicular contents are released
4. increased separation btwn egg cell membrane and vitelline membrane
5. hardening of vitelline membrane (fertilization membrane)
- from larva into an adult
- larval stage
- embryonic development
- egg to larva (tadpole)
- Rana pipiens
- common grass frog
- Xenopus laevis
- three clawed frog
- which side is lighter in color animal pole or vegetal?
- vegetal pole (contains most of the yolk and is heavier)
- both cells equal in size
- two cells not equal in size
- fluid-filled cavity
- list three germ layers
- endoderm, mesoderm, ectoderm
- process by which the nervous system is formed
- rod-like support characteristic of chordates
- shell membranes
- covering the whole body of the embryonic chick
- otic vesicle
- small saclike structure alongside the middle of the brain
- Echinoderms, like vertebrates, are deuterostomes or protostome?
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