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Houses Developing Embryo

[Summary]Stages of Development of the Fetus - Women's Health Issues - Merck Manuals Consumer Version The Anatomy and Physiology of Animals/Reproductive System Worksheet/Worksheet Answers 1. Add the labels to the diagram of the reproductive system of a male do

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Stages of Development of the Fetus - Women's Health Issues - Merck Manuals Consumer Version

Houses Developing Embryo

The Anatomy and Physiology of Animals/Reproductive System Worksheet/Worksheet Answers

1. Add the labels to the diagram of the reproductive system of a male dog shown below.

2. Fill in the table using the choices in the list below.

3. The diagram below shows a section through a testis.

Colour and label the structures of the diagram.

4. The diagram below shows a sperm. Colour and label the following areas.

Ovule

Location of ovules inside a Helleborus foetidus flower

In seed plants, the ovule ("small egg") is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: The integument(s) forming its outer layer(s), the nucellus (or remnant of the megasporangium), and female gametophyte (formed from haploid megaspore) in its center. The female gametophyte—specifically termed a megagametophyte—is also called the embryo sac in angiosperms. The megagametophyte produces an egg cell (or several egg cells in some groups) for the purpose of fertilization. After fertilization, the ovule develops into a seed.

Female Cycle

Female Cycle

In females there is a cyclical pattern of hormone secretion by the ovaries. This pattern of hormone secretion results in the ovulation of a single egg each cycle, and coordinates changes in the uterus so that it is ready to house a developing embryo should that egg become fertilized.

Oocytes develop in follicles

Your pregnancy: 5 weeks | BabyCenter

How your baby's growing

Deep in your uterus your embryo is growing at a furious pace. At this point, he's about the size of a sesame seed and looks more like a tiny tadpole than a human. He's now made up of three layers – the ectoderm, the mesoderm, and the endoderm – which will later form all of his organs and tissues.

The Bird Egg: Inside & Out | Petcha

By Rebecca Sweat

Oology is the branch of ornithology that deals with the anatomy and physiology of eggs as well as the size, shape, color and other characteristics. Nearly all animals produce eggs, from humans, dogs and insects to fish, snakes and birds.

Mammal embryos develop completely within the female? body and get their nutrition directly from the female. Birds, on the other hand, produce a hard-shelled egg designed for the embryo to develop outside of the female body. It is self-contained and no external nutrients are needed.

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