in your own words, what are platelets and plasma?

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Answer 1

Platelets are small, colorless blood cells that help in the formation of blood clots to prevent excessive bleeding. Plasma, on the other hand, is the liquid component of blood that carries various substances such as nutrients, hormones, and waste products throughout the body. Platelets and plasma are components of blood that play essential roles in maintaining the proper functioning of the circulatory system.

Platelets are small, irregularly shaped cell fragments produced in the bone marrow. They circulate in the bloodstream and play a crucial role in blood clotting.

When a blood vessel is damaged, platelets rush to the site and form a plug, initiating the clotting process to prevent excessive bleeding. They release clotting factors and help stabilize the clot until the injured vessel can heal. Platelets also contain growth factors that promote tissue repair and regeneration.

Plasma, on the other hand, is the liquid component of blood, making up about 55% of its volume. It is a yellowish fluid consisting mostly of water but also contains various proteins, hormones, electrolytes, and waste products.

Plasma serves as a medium for transporting red and white blood cells, platelets, nutrients, hormones, and metabolic waste products throughout the body.

It helps maintain the osmotic balance, pH level, and temperature of the blood. Plasma also plays a vital role in immune responses, as it contains antibodies that help defend against pathogens.

In summary, platelets are cell fragments involved in blood clotting, while plasma is the liquid part of blood that carries various substances and supports the transportation and immune functions of the circulatory system.

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Related Questions

Which specialized cells help support the skeletal fibers in the cell?

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Osteoblasts and osteocytes, specialized cells found in bone tissue, help support the skeletal fibers in the cell.

Osteoblasts and osteocytes are specialized cells that help support the skeletal fibers in the cell.

Osteoblasts: These cells are responsible for the formation of bone. They synthesize and secrete collagen and other proteins that make up the extracellular matrix of bone tissue. Osteoblasts also regulate the mineralization process by depositing calcium and other minerals onto the collagen matrix.Osteocytes: Once osteoblasts become surrounded by the bone matrix they have produced, they mature into osteocytes. Osteocytes are the most abundant cells in mature bone tissue. They are located in small spaces called lacunae and communicate with each other and with osteoblasts through tiny channels called canaliculi.Support for skeletal fibers: Osteoblasts and osteocytes play a crucial role in supporting the skeletal fibers in the cell. Osteoblasts actively produce and deposit the bone matrix, while osteocytes maintain and regulate the mineralization and remodeling of bone tissue. Together, these cells provide the structural support necessary for the integrity and strength of the skeletal fibers.

In summary, osteoblasts and osteocytes are specialized cells that work together to support and maintain the skeletal fibers in the cell, contributing to the overall structure and function of the skeletal system.

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what makes two animals the same species

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Answer:

Interbreeding, morphological similarity, genetic similarity, shared ecology, and fossil records.

Explanation:

An animal is any member of the kingdom of Animalia, comprising multicellular organisms that have well-defined shape and usually limited growth, can move voluntarily, actively acquire food and digest it internally, and have sensory and nervous systems that allow them to respond rapidly to stimuli: some classification schemes also include protozoa and certain other single-celled eukaryotes that have motility and animal like nutritional modes.

Species, on the other hand, is one of the classes of things included with other classes of a genus.

Animals that can successfully reproduce and produce fertile offspring are generally classified as the same species. The ability to interbreed indicates a shared gene pool and evolutionary path.

Animals with very similar physical forms, anatomies and characteristics are often considered the same species. This includes features like body shape, body covering, number of limbs, sense organs, etc.

Animals with highly similar DNA sequences, especially in their protein-coding genes, are often classified as the same species. A threshold of around 97-99% genetic similarity is typically used.

Animals that occupy the same ecological niche and have similar basic life functions (feeding, breathing, reproducing) tend to be grouped in the same species. They often depend on the same resources.

Paleontologists study fossilized remains to trace how animal forms have changed over time. Animals that show continuity in morphology and range over successive fossil layers are often classified as the same evolving species.

explain how you know that the mystery fossil is related to both whales and wolves. use the following sentence starter to help you get started.

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Based on the morphology and anatomical features of the mystery fossil, it can be inferred that it is related to both whales and wolves.

The first clue suggesting a relationship to whales is the presence of skeletal adaptations associated with aquatic life. Whales have streamlined bodies, elongated and paddle-like limbs, and a dorsal fin, all of which aid in swimming efficiently in water.

If the mystery fossil exhibits similar characteristics, such as a streamlined body shape and limb adaptations suited for swimming, it suggests a connection to whales.

On the other hand, the potential connection to wolves can be inferred from the presence of certain dental and cranial features. Wolves belong to the family Canidae, which includes other canines like dogs and foxes.

Canids have specific dental adaptations for hunting and consuming meat, including sharp and pointed teeth for tearing flesh. If the mystery fossil exhibits similar dental characteristics, it could indicate a relationship to wolves or other canids.

By considering both the aquatic adaptations resembling whales and the carnivorous dental features resembling wolves, it can be concluded that the mystery fossil shares traits with both of these animal groups, suggesting a possible evolutionary relationship or shared ancestry between whales and wolves.

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Calculate the percent colonization for the samples shown. Answer using numbers only.

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The answer to your problem can easily be found if one were to really

Fish Consumption – What are the primary chemicals of concern that are still resulting in consumption restrictions of Great Lakes fish? Using the terms "bioaccumulation" and "biomagnification," explain why regulations warn against consuming some larger species of fish in some areas of the Great Lakes that contain chemicals.

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There are many chemicals of concern that are still resulting in consumption restrictions of Great Lakes fish. The main chemicals of concern are polychlorinated biphenyls (PCBs), dioxins, furans, and mercury. These chemicals are persistent, bioaccumulates, and toxic.

They can remain in the environment for years and can accumulate in the tissues of fish, particularly larger fish, leading to potential health risks to those who consume them. As a result, there are regulations against consuming some larger species of fish in some areas of the Great Lakes that contain these chemicals.

Bioaccumulation is the process by which chemicals build up in the tissues of an organism over time. In the case of fish in the Great Lakes, PCBs, dioxins, furans, and mercury are taken up through the water, food, or sediments. These chemicals can then accumulate in the fatty tissues of fish, resulting in higher concentrations in larger, longer-lived fish.

Biomagnification is the process by which the concentration of a chemical increases as it moves up the food chain. In the case of Great Lakes fish, smaller fish consume contaminated food and absorb the chemicals. As larger fish eat the smaller fish, they accumulate higher concentrations of the chemicals in their tissues.

The concern with consuming larger species of fish in some areas of the Great Lakes that contain chemicals is that these fish have accumulated higher concentrations of PCBs, dioxins, furans, and mercury in their tissues. This can pose a health risk to humans who consume them. Therefore, regulations warn against consuming these fish to reduce the risk of exposure to these chemicals.

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HELP:

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Answers

The system that gives body structure, shape, and protects the inner organs is the skeleton. (Skeletal system)

2. The system that breaks down food for the rest of the body to use to make energy is the Digestive system. (Digestive System)

3. This system allow the body to move ( Muscular system)

4. This system controls everything in the body by communicating all throughout other systems ( Nervous System)

5.: This system filters the waste and removes toxins from the blood ( excretory system)

6. This system transports all nutrients, wastes, oxygen, carbon dioxide and everything else throughout the blood ( cardiovascular system)

7. This system exchanges gases: oxygen for carbon dioxide ( respiratory system)

8. This system allows for life to be continued through fertilization and development of another human beings or species ( Reproductive system)

9. This system serves as protective barrier from the outside world and helps to regulate body temperature ( integumentary system)

The systems in the body

These are systems that work together to maintain its overall function and well-being. They work together to maintain homeostasis, ensuring the body functions optimally. Some of the systems are listed above.

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