Mesoderm

"Animalia" redirects here. For other uses, see Animalia (disambiguation). Animals Temporal range: Cryogenian – Present, 670 –0Ma Had'nArcheanProterozoicPha. Animal diversity.png About this image Scientific classification e Domain: Eukaryota (unranked): Unikonta (unranked): Opisthokonta (unranked): Holozoa (unranked): Filozoa Kingdom: Animalia Linnaeus, 1758 Phyla List of animal phyla Synonyms Metazoa Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. With…

Scales are the exoskeleton covering of the fishes found in most of the cartilaginous and bony fishes which provide protection to the body. Scales are small, thin, cornified, calcareous or bony plates which fit closely together or overlap. Scales are complex derivatives of the integument and are derived from the mesenchymal cells of the dermis. They vary greatly in size, shape, structure, and extent, ranging from rigid armour plates in fishes such as shrimp fishes and box fishes, to microscopic…

any type of cell desired; these cells are called pluripotent. “Pluripotent stem cells are the primary choice for medical researchers seeking to develop therapies because these cells can develop into any of the three primary tissue types…[endoderm, mesoderm, ectoderm]” (Bellomo 35) The only place scientist can harvest these pluripotent cells is from the center of the blastocyst, which is the initial fertilization of the human egg. Without the presence of a womb, these cells do not have the…

Your Inner Fish by Neil Shubin Chapter Questions Chapter 1 – Finding Your Inner Fish 1. Explain why the author and his colleagues chose to focus on 375 million year old rocks in their search for fossils. Be sure to include the types of rocks and their location during their paleontology work in 2004. The author and his colleagues chose to focus on 375 Million Years as it was a period when the transformation took place from fish to fish with limb. The fish without characteristics of…

The Animal Book Chapter 1: Animal characteristics Chapter 2: Body Parts Body plans refer to similarities in development, structure, and function among members of a particular group (phylum). At some point, members of that group share the same body plan during their development process. Which could be a possible explanation for shared structural plans that have been observed in the anatomy and embryology. Timing, pattern, and scale of development determine the organism's shape, and closely…

differ in function, histological appearance and their embryological origin. The outer layer or epidermis is formed by epithelium and is of ectodermal origin. The underlying thicker layer, the dermis, consists of connective tissue and develops from the mesoderm. Beneath the two layers, there is a subcutaneous layer of loose connective tissue, the hypodermis or subcutis, which binds the skin to underlying structures. Hair nails and sweat and sebaceous glands are of epithelial origin and…

while in undifferentiated state. Embryonic stem cells are stem cells derived from the undifferentiated inner mass cells of a human embryo, also due to them being pluripotent, they can differentiate into all derivatives of the ectoderm, endoderm and mesoderm. The induced pluripotent stem cell is the immature cell that is generated from an adult cell and regained the capacity to differentiate into any type of cell in the…

Werner’s syndrome (WS) is a very rare autosomal recessive disease that will cause premature aging for both men and women, where symptoms may start showing up during or after puberty and will continue on through their entire lifetime.1 This being said, there is a great disproportion between a patient’s real age and the perceived appearance age. A patient that is diagnosed with WS will age progressively faster than its peers, and the median lifespan is around 54 years of age.2 Another name for…

is so-called (ovary) germ cell tumors. The meaning of teras in Greek is a monster. Teratoma might occur in female and male reproductive systems because germ cells usually form the ova or eggs. It typically has three components that are endoderm, mesoderm, and ectoderm; these arise from totipotential cells (embryonic cells). Moreover, teratoma range from benign, well-differentiated (mature), and malignant (immature), but a well differentiated teratoma is by far the most common in male and female…

Stages of pregnancy Weeks 1-3: The female hormone oestrogen will trigger a women’s uterus so it forms a thick blood-rich lining of tissue. The other female hormone progesterone will begin to prepare the uterus so it can support a fertilised egg and accommodate the growing baby over the next few months. During this time, the woman’s ovaries will also ripen the eggs in follicles (sacs filled with fluid). Ovulation This is a part of the menstrual cycle where the woman’s ovaries release an…