Biology 1001 - Chapter 22 Part 1 Development

161 terms by thumpaholden 

Create a new folder

Advertisement Upgrade to remove ads

mouth

What does the blastopore develop into in lower classes of animals?

parturition

Another word for birth.

exchange of nutrients, gases and wastes with blood of the mother

Function of the placenta in the embryonic development in mammals

embryonic, fetal

List the two main parts of human development

related animals share embryonic stages

Two supporting arguments for "Ontogeny recapitulates phylogeny": 1) _______, 2) higher animals evolved from lower animals

invagination

Name the process by which cells of the blastula fold inward to form the early gastrula.

mesoderm

From which embryonic germ layer does the reproductive system form?

induction

The means by which development of the embryo is usually orderly.

8 to 10 weeks

How old is the embryo at the end of the embryonic period?

neurula

In which stage of embryonic development does the embryo begin to grow in size?

thoracic, abdominal, cranial

Give example of three body cavities that develop from the coelom formed in the gastrula

late gastrula

In which stage of embryonic development does the yolk plug become apparent?

anus

What does the blastopore develop into in higher classes of animals?

gastrula

In which stage of embryonic development do the three distinct germ layers appear?

ooplasmic segregation

What is the term used to describe the fact that gene regulating substances are not distributed equally throughout the cytoplasm of an oocyte, resulting in daughter cells receiving different gene regulating substances and being able to turn on/off different genes?

notochord

What structure in an embryo induces formation of the nervous system?

dorsal

The neural plate forms on the dorsal or ventral side of the gastrula?

animal

Which pole of the embryo in cleavage stage are faster to divide?

brain and spinal chord

Into what structures does the neural tube form?

neurula

In which developmental stage does the neural plate appear?

mesoderm

The reproductive system develops from which embryonic germ layer?

animal

At which pole of the developing embryo does cleavage begin?

organizer

Part of the embryo that induces the formation of an adjacent organ - such as the notochord - by releasing one or more chemical substances.

refinement of organs and growth

what occurs in the fetal part of human development?

chorion

The outermost extra embryonic membrane that forms the fetal portion of the placenta in mammals?

chordata

Which phylum are humans classified into?

gene regulating substances

What is not distributed evenly throughout the cytoplasm that causes ooplasmic segregation?

east west

The third cleavage of preembryonic development goes in which direction?

2 but may be fused

How many placentas are involved in a pregnancy with fraternal twins?

mesoderm

In which germ layer of a developing embryo do coelom form?

gastrula

In which stage of embryonic development does the archenteron clearly appear?

conception

Another name for fertilization

inner cell mass

Totipotent cells that are found at the animal pole of the blastocyst.

endoderm

The respiratory system develops from which embryonic germ layer?

amnion

The extra embryonic membrane that contains fluid in which the embryo can be protected from drying out and protected from mechanical shocks.

phylum

Which level of taxonomic category is Chordata?

vegetal pole

Which portion of the embryo in the cleavage stage is creamy white?

2

How many amnions are involved in a pregnancy with fraternal twins?

which genes are turned on or off

What do gene regulating substances determine?

totipotent

Inner cell mass of the human blastula that have the potential to develop into a complete individual.

morphogenesis

The development process through which we are able to distinguish between an arm a leg.

ectoderm

Which germ layer lines the outside of the embryo?

cleavage, blastula, gastrula, neurula

What are the four stages of embryonic development that are shared by 5 classes of higher animals.

animal

In which hemisphere of a human blastocyst will you find the totipotent inner cell mass

conjoined twins

If the cleavage furrow does not completely separate the two halves of totipotent cells in a zygote, what is the result?

ectoderm, neural groove, neural tube, brain and spinal chord

Put these structures into their order of development in the embryo: neural groove, neural tube, brain and spinal chord, ectoderm.

reptile, bird, mammal (terrestrial vertebrate animals)

Which classes of animals develop extraembryonic membranes that support development but do not actually become part of the developing embryo?

first two weeks

Timing of preembryonic development.

length of pregnancy

What does the term "gestation period" refer to?

ectoderm

The nervous system develops from which embryonic germ layer?

posterior

Which end of the gastrula - anterior or posterior - invaginates?

Cells don't differentiate, and they die

What occurs when a daughter cell does not receive any of the grey crescent?

morphogenesis

the development process in which the shape and structure of an organism becomes evident.

identical twins

If the cleavage furrow fully separates two halves of totipotent cells in a zygote, what is the result?

chordates

All of the 5 classes of higher animals are ______.

endoderm

Which germ layer lines the archenteron?

zygote

Diploid cell formed by union of two gametes?

neural plate, neural groove, neural tube

List the three stages of the neurula.

gastrula

In which stage of embryonic development does invagination occur?

mesoderm

from which embryonic germ layer does the dermis of skin form?

2

how many zygotes were involved in a pregnancy with fraternal twins

growth

Name the process of development in which cells divide, get larger and divide again.

zygote

Another name for the fertilized egg.

blastocyst cavity

What is the term used in humans for the blastocoel?

ectoderm

Skin develops from which embryonic germ layer?

endoderm

The intestinal tract develops from which embryonic germ layer?

ectoderm

What does the notochord act upon to produce the neural plate?

they were conjoined twins

What were Cheng and Eng Bunker known for?

neural tube

Into what structure does the neural groove form?

fish, amphibians, reptiles, birds, mammals

List the 5 classes of higher animals that share the first four stages of embryonic development.

surrounds embryo with fluid to keep it moist and protect from mechanical shocks

Function of the amnion in embryonic development.

coelom

What are the cavities that form in the mesoderm called?

invagination

Term for the formation of a concave surface in the gastrula stage.

blastocoel

What is the name of the hollow inside a blastula?

blastocoel

Name the fluid-filled cavity of the blastula.

grey crescent, notochord

Two examples of induction

endoderm

From which embryonic germ layer does the urinary bladder form?

blastopore

The opening from the archenteron to the outside.

differentiation and morphogenesis

List two broad, major process of the human development process.

embryonic

Part of human development that consists of the formation of all major organs

the cells are denser

Why does the creamy white vegetal pole of the embryo usually roll to the bottom?

birth

What does parturition refer to?

embryonic

Part of human development that is most crucial in terms of mother taking in substances

zygote, morula

the cleavage stage of embryonic development that starts with a _______ and ends with a _______.

structure, function

Differentiation is the development process that occurs to individual cells when they become specialized in _______and ________.

evolutionary history

Ontogeny (progress of development of an individual organism) recapitulates (repeats) phylogeny (__________).

cleavage, blastula, gastrula, neurula

What are the four stages of embryonic development that are shared by 5 classes of higher animals.

third

The first occasion of east-west cell division in the developing embryo is at the ______ cleavage.

8 to 10 weeks

How old is the embryo when fetal development begins?

have a notochord at some stage of development

What do all chordates share?

neurula

In which developmental stage does the neural groove appear?

gastrula

In which stage of embryonic development does morphogenesis begin?

endoderm

From which embryonic germ layer does the epithelial lining of the digestive and respiratory tracts form?

differentiation

Name the development process when individual cells become specialized in structure and function.

yolk sac

The extra embryonic membrane that is the first site of blood cell formation in mammals.

2 but may be fused

How many chorions are involved in a pregnancy with fraternal twins?

mitosis

What major cellular process occurs in the cleavage stage of preembryonic development?

blastocoel

Name the fluid-filled cavity of the blastula.

bird and reptile

The yolk sac surrounds the yolk in the eggs of which classes of vertebrates?

morula

Which stage of embryonic development looks like a blackberry?

fish, amphibians, reptiles, birds, mammals

List the 5 classes of higher animals that share the first four stages of embryonic development.

1

How many placentas are involved in a pregnancy with identical twins?

archenteron

Name the cavity produced by the infolded (invaginated) layer of cells during gastrulation.

morula

Name the stage of development when the embryo is a solid ball of cells.

allantois

The extra embryonic membrane that contributes blood vessels to the formation of the umbilical cord.

progress of development of an individual organism

Ontogeny (__________) recapitulates (repeats) phylogeny (evolutionary history)

archenteron

Name for the primitive gut that appears in gastrula stage.

identical

Which type of twins are monozygotic?

neurula

In which stage of embryonic development do tissues begin to differentiate?

chorion

The extra embryonic membrane that lies just below the porous shell and functions in gas exchange for the embryos of nonmammalian land vertebrates.

first 2 months

Term of embryonic development

ectoderm

Out of which germ layer does the neural tube form?

animal

Which hemisphere of the blastula divides faster?

primitive gut

Another name for the archenteron.

animal

In which pole of the blastula does the blastocoel form?

late gastrula

Which stage of embryonic development is the yolk plug stage?

blastula

Name the stage of development when the embryo's cells undergo division in a manner that forms a layer of cells surrounding a hollow central cavity.

ectoderm

From which embryonic germ layer does the epithelial lining of oral cavity and rectum form?

ectoderm, mesoderm, endoderm

List the three germ layers that appear in gastrula stage of embryonic development.

induction

What causes neurulation?

formation of all major organs

What occurs in the embryonic part of human development?

neural groove

Formation of what structure is characteristic of the neurula stage?

fertilization

Another word for conception

mesoderm

The skeleton develops from which embryonic germ layer?

fetal development

What term is used to refer to the last seven months of human development?

north south

The second cleavage of preembryonic development goes in which direction?

conception to birth

Period of development.

phylogeny

Term for evolutionary history of a species.

1

How many zygotes are involved in a pregnancy with identical twins?

morphogenesis

Name the process of development in which body parts become shaped and patterned into a certain form.

differentiation

The development process in which we can distinguish between bone cells, muscle cells and nerve cells.

ontogeny

Term for the progress of development of an individual organism.

mesoderm

Out of which germ layer does the notochord form?

conjoined twins

Another name for Siamese twins.

land animals

Which group has four extraembryonic membranes - aquatic animals or land animals?

allantois

The extra embryonic membrane that serves as a storage area for metabolic waste products in reptiles and birds.

third to ninth months

Term of fetal development

animal pole

Which portion of the embryo in the cleavage stage is dark coloured?

neurula

Which stage of embryonic development is characterized by a neural groove?

morphogenesis

The development process in which body parts take on a specialized shape or form.

mesoderm

The cardiovascular system develops from which embryonic germ layer?

animal, vegetal

What are the two poles of the zygote?

mesoderm

Muscles develop from which embryonic germ layer?

2 but 2 umbilical chords

How many amnions are involved in a pregnancy with identical twins?

mitosis or cleavage

By what process does the embryo divide with no increase in size?

amnion, allantois, chorion, yolk sac

What are the four extraembryonic membranes that surround and cover the embryos of land vertebrates?

gastrulation

Term for formation of germ layers.

allantois, yolk sac

List the extraembryonic membranes that have their roles redefined in mammalian development, becoming incorporated into the formation of the umbilical chord

not entirely (to some extent/partially)

Is the statement "Ontogeny recapitulates phylogeny" correct?

See More

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set