Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ANAT UNIT 1 FINAL
INTRO TO DEVELOPMENT: GAMETES TO THE TRILAMINAR EMBRYO
| Question | Answer |
|---|---|
| What is the only cell in the male gamete production cycle that divides by mitosis? | SPERMATOGONIA |
| Is a spermatogonia haploid or diploid? | DIPLOID (46 CHROMOSOMES) |
| In the gamete production cycle a spermatagonium will divide via mitosis to become what two types of daughter cells? | 1 SPERMATOGONIA AND 1 PRIMARY SPERMATOCYTE |
| Is a primary spermatocyte haploid or diploid? | DIPLOID (46 CHROMOSOMES) |
| A primary spermatocyte will divide by meiosis and give rise to two daughter cells called: | SECONDARY SPERMATOCYTES |
| Are secondary spermatocytes haploid or diploid? | HAPLOID (23 CHROMOSOMES) |
| Two secondary spermatocytes divide via meiosis and give rise to four: | SPERMATIDS |
| Are spermatids haploid or diploid? | HAPLOID (23 CHROMOSOMES) |
| A spermatid develops into a mature spermatozoa through the process of: | SPERMIOGENESIS |
| A baby boy is born with what type of gamete? | SPERMATOGONIA |
| Oogonia divide by ____ in the fetal ovary. | MITOSIS |
| Oogonia divide by mitosis and give rise to these cells: | PRIMARY OOCTYES |
| A baby girl is born with what type of gamete? | PRIMARY OOCTYES |
| Primary oocytes are arrested in what phase of development? | (DIPLOTENE STAGE OF) PROPHASE I OF MEIOSIS |
| When does a secondary oocyte form? | UPON MATURATION INTO AN OVUM WITHIN THE OVARIAN FOLLICLE, 10 HOURS PRIOR TO OVULATION. |
| The second meiotic division of the secondary oocyte occurs during what process? | FERTILIZATION |
| Upon fertilization, two ___ are formed, each with its own nuclear envelope. | PRONUCLEI |
| Fusion of the two pronuclei in the fertilized ovum give rise to the: | ZYGOTE |
| Is the zygote haploid or diploid? | DIPLOID (46 CHROMOSOMES) |
| What is the 16-cell stage of embryogenesis? | MORULA |
| What is the 32-cell stage of embryogenesis? | BLASTULA |
| What are the individual cells of the blastula called? | BLASTOMERES |
| The blastula implants on what day after fertilization? | DAY 6 |
| By day 8 a fluid-filled space develops and an inner cell mass and an outer layer of cells called the trophoblast are visible. The blastula is now called a: | BLASTOCYST |
| The inner cell mass is also called an ___ and will give rise to the embryo proper. | EMBRYOBLAST |
| The embryoblast differentiates into two layers to form the: | BILAMINAR EMBRYONIC DISC. |
| The layer of the embryonic disc adjacent to the amniotic cavity is the: | EPIBLAST |
| The layer of the embryonic disc adjacent to the exocoelomic cavity is called the: | HYPOBLAST |
| The exocoelomic cavity will give rise to the: | YOLK SAC |
| The process of gastrulation gives rise to the: | TRILAMINAR EMBRYO |
| In the trilaminar embryo, the epiblast will give rise to the embryonic ___. | ECTODERM |
| In the trilaminar embryo, the hypoblast will give rise to the embryonic ___. | YOLK SAC WALL |
| The cells at the margin of the epiblast and hypoblast of the trilmaniar embryo will give rise to the extraembryonic ___. | MESODERM |
| This specialized collection of hypoblastic cells develops at a localized site at the margin of the bilaminar disc. | PRECHORDAL PLATE |
| The prechordal plate determines this end of the embryo. | CRANIAL END |
| During the third week, this longitudinal band of tissue develops in the midline of the epiblast at the caudal end of the embryonic disc. | PRIMITIVE STREAK |
| The proliferation of cells at the cranial end of the primitive streak forms the: | PRIMITIVE NODE |
| What groove develops in the midline of the primitive streak? | PRIMITIVE GROOVE |
| The indentation in the primitive node is the: | PRIMITIVE PIT |
| The embryonic mesoderm is derived from the: | PRIMITIVE MESENCHYME |
| What determines the cranial-caudal midline of the embryo? | THE NOTOCHORD |
| The notochord will give rise to the ___ canal. | NOTOCHORDAL |
| By the end of the third week, the ectoderm overlying the notochord begins to thicken, forming this structure: | NEURAL PLATE |
| The longitudinal groove that forms in the neural plate is the: | NEURAL GROOVE |
| To review, embryonic spinal cord development in the hypoblast follows these six steps: | PRECHORDAL PLATE → NOTOCHORDAL PROCESS → NOTOCHORDAL CANAL → NEURAL PLATE → NEURAL GROOVE → NEURAL TUBE |
| Embryonic spinal cord development in the epiblast follows these four steps: | PRIMITIVE STREAK → PRIMITIVE GROOVE, PRIMITIVE NODE → PRIMITIVE PIT |
| The neural crests are derived from the: | NEUROECTODERM CELLS |
| By Day 21 the following three tissue layers are formed: | ECTODERM, MESODERM, ENDODERM |
| The ectoderm forms what? | THE ENTIRE SURFACE OF THE EMBRYO |
| The mesoderm forms what? | THE LINING OF THE BODY CAVITY AND SUSPENDS THE GUT TUBE |
| The endoderm forms what? | THE GUT TUBE |
| The body cavities are derived from the: | LATERAL PLATE MESODERM |
Created by:
AnatomyByDocRoxy
Popular Anatomy sets