SCOLIODON
The Chondrichthyes are also known as elasmobranchs. They are almost exclusively marine and include sharks, rays, and chimaeras. Scoliodon is an elasmobranch which is marine and is an active swimmer. Scoliodon is widely studied shark all over the world. The genus is represented by nine species, of which four are very common in Indian seas.It is commonly known as the Dog fish. Scoliodon was first discovered and described by Muller and Henle (1837). The genus Scoliodon is characterized by having long snout. The teeth are similar in both jaws. Thecaudal pit andsubcaudal lobes are prominent. Scoliodon belongs to:
Kingdom Animalia
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9.1 Lateral view of Scoliodon b)Trunk – *Trunk is the largest part of the body which extends from behind the gill slits to the median ventral cloacal aperture. *It has maximum thickness in the middle region and it gradually tapers posteriorly into a long tail. *It is arched dorsally and flattened ventrally and is provided with fins(median unpaired fins, and lateral pairedfins). c)Tail–*It is the posterior part of the body behind the cloacal aperture. *It is slightly upward towards the end. *The tail contains caudal fin which is formed of a reduced …show more content…
Epidermis – *Epidermis is made up of epithelial cells. *Epithelial cells are ciliated in young stage but in adult they are non ciliated. *In between epithelial cells unicellular mucous glands are present. *The cells of outer layer are dead and form a thin squamous layer. *Stratum germinativum (Malpighian layer) is the innermost layer of the epidermis. *It regularly divides to form new cells. Dermis –*Dermis is firmly attached with the body musculature and is composed of three layers– a) Stratum laxum – It is the outer layer containing few loose fibres stratum
Caudillos are a major factor in how latin americas government was established and brought to what it is now. Caudillos are mainly the ranchers that lived on the plains and made a living from the land. Buenos Aires was a very civilized society compared to internal Argentine area. My opinion is that this vast area of plains wouldn 't have been civilized if it wasn 't for these gaucho leaders causing problems and the impact of Buenos Aries upon the lacking internal Argentine area. Argentinas vast area of ranches and farming potential could have been utilized to attribute to further success of Buenos Aries I feel like.
The cutaneous membrane is the toughest organ that the human body has, and it has three coating layers. One is the epidermis, the next is the dermis, and the last layer is the subcutaneous tissue known as the hypodermis. A. Epidermis - This outer layer has stratified squamous epithelium to keratinize the skin, and to make it solid and strong. The epidermis does not receive or give blood, but it has up to five strata. They are the stratum basale, spinosum granulosum, lucidum, and corneum.
Instead of teeth, Dunkleosteus possessed two pairs of sharp bony plates which formed a beak-like structure. Dunkleosteus, together with most other placoderms, may have also been among the first vertebrates to internalize egg fertilization, as seen in some modern
Sea stars have bilateral symmetry. The skeleton is made up of ossicles which helps make for flexibility yet firm enough to hold together. Their flexibility enables them to catch prey easily and sufficiently. The spine and pedicellariae is small and movable. On the upper
These three sharks appeared from 190-95 million years ago. They were the first offshore-deepwater predators. Before that, most shark were small, near shore predators, who lived in very shallow waters. Then during the Tertiary Period, which was 65-35 million years ago, the so-called “filter-feeders” came along. These are the types of sharks who evolved away from being predators, and fed on plankton and other small marine
Traveling to the feisty state of Texas in the United States of America is such a worthwhile experience on its own that people are just too jaded to notice. But if you wish to know Texas more in a deeper level then head on straight to Corpus Christi and satisfy your want fully. With its placement as the city by the placid lake, Corpus Christi is now being known through the vibrant and exuberant feedback from visitors, making them come back as soon as they left. Spaniard colonizers named the city as such after a Roman Catholic holy day and with the stops and starts that Corpus Christi experienced in the past, everyone can expect nothing but growth and development for the years to come. (2) Location (3)
Sclerenchyma cells are the main support but die when the plant grows up. My third question was “Do humans have an epidermis as well?”.
C is for Cassoday Cassoday is my twenty one year old sister. Cassoday was named after a town by Newton, it is spelled the same and pronounced the same. Cassoday is my oldest sister and she is one out of five including me. Today is December third, it is her birthday and in her birthday I send her an email saying happy birthday all my friends say the same thing, hope your day is a great one.
THE EVOLUTION OF THE CARCHARODON CARCHARIAS (SHARK) for my research task, I chose to study and track the evolution of the shark. These beasts being one of nature’s top predators in the world and dominating the oceans surrounding our continents. I chose these fierce creatures as they were a perfect example for me to use in explaining the evolution and the branching of evolution purely based on the fact that they have been around for millions of years through prehistoric times changing and evolving into different forms living in different areas and different depths of the world, as we see they are a large amount of shark species in the oceans all coming from one place. Which will be discussed in further detail throughout this research task.
St. Juan Diego was born in 1474 in Cuautitlán, Mexico. In his early age, he and his family worked as farmers as the Spanish conquistadors arrived in Mexico. He grew up as an only child and lived a very simple life (Catholic Online). Although he did not grow up Catholic, he converted later in his life and became very strong in his faith. St. Juan Diego is one of the few people in history to have seen Our Lady of Guadalupe after her ascension.
The teeth of Bathygnathus are long, recurved, and distinctively teardrop-shaped, that be widest at the middle rather than the base. The teardrahp shaipe of the teeth is an indication that Bathygnathus belongs to the family Sphenacodontidae. The shaipe of the maxilla indicates that Bathygnathus had an deep skul like those of other advanced sphenacodontids like Dimetrodon. Like Dimetrodon, Bathygnathus has a enlarged caniniform tooth near an front of the
The main body is broken into three sections. There is the abdomen, thorax,
The dermis which is the second layer is more active and hosts capillaries, blood vessels, elastin and also fibroblasts. Dermis also has certain polysaccharides like glycosaminoglycans which keep the cellular activity towards the
The Dermis is the second layer of skin. It is located below the Epidermis and contains our hair follicles (which sprout on the Epidermis). The Hypodermis is the lowest and largest layer, containing fat and connective tissues.
The epidermis is the layer of skin that we can see. It varies in thickness. The thickest layer is on the soles of the feet and the palms of the hands. The thinnest layer is on the eyelids and nipples. The cells on the surface are constantly coming off (shedding) this is known as desquamation.