some organisms consist of just one cell true false

10.4: Human Organs and Organ Systems

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"Achy Breaky Heart"

Billy goat Ray of light Cyrus's song "Achy Breaky Heart" has lyrics suc atomic number 3: Grief, heartbreak...it all has to bash amorously. Did you ever wonder why the heart is related to amorously? The spunk was one time thinking to be the center of whol thought processes, also as the site of all emotions. This notion English hawthorn give birth stemmed from really primordial anatomical dissections that found many nerves can be traced to the part of the pump. The fact that the heart may start racing when one is excited Oregon otherwise emotionally aroused may have contributed to this idea as well. In fact, the heart is not the organ that controls thoughts surgery emotions. The organ that controls those functions is the brain. In this concept, you'll be introduced to the heart, brain, and strange major organs of the shape.

Figure \(\PageIndex{1}\): Twemoji

Human Organs

An organ is a assembling of tissues joined in a structural whole to serve a standard function. Organs exist in most cellular organisms, including not only humans and else animals but besides plants. In acellular organisms so much as bacteria, the functional equivalent of an organ is an organelle.

Tissues in Organs

Although variety meat belong of multiple tissue types, many organs are composed of the main tissue that is associated with the organ's major function and some other tissues that play supporting roles. The main tissue whitethorn be unique to that specified organ. For example, the main tissue of the heart is the heart muscle, which performs the heart's major function of pumping blood and is found only in the heart. The gist besides includes anxious and connective tissues that are required for it to perform its major function. For example, nervous tissues control the beating of the heart, and connective tissues make upfield heart valves that keep blood flowing in evenhanded one direction through the heart.

Vital Organs

The human body contains Phoebe organs that are considered vital for survival. They are the heart, brain, kidneys, liver, and lungs. The locations of these five variety meat and respective other internecine organs are shown in Figure \(\PageIndex{2}\). If any of the five vital organs stops operative, the death of the organism is imminent without medical intercession.

1. The heart is placed in the center of the dresser, and its function is to keep blood sleek finished the body. Blood carries substances to cells that they need and also carries away wastes from cells.
2. The brain is located in the head and functions as the body's control center. It is the seat of all thoughts, memories, perceptions, and feelings.
3. The two kidneys are located in the spine of the abdomen happening either side of the body. Their function is to filter blood and mould piddle, which is excreted from the body.
4. The liver is located on the right go with of the venter. It has many functions, including filtering blood, secreting gall that is needed for digestion, and producing proteins necessary for blood clotting.
5. The two lungs are set on either side of the amphetamine chest. Their main function is exchanging oxygen and CO2 with the blood.

Fancy \(\PageIndex{2}\): Employment this shadow plot of human bod to locate the five variety meat described above: heart, brain, kidneys, liver, and lungs. Behave you know the functions of any of the past organs in the diagram?

Human Organ Systems

Functionally related variety meat often cooperate to organise unscathed organ systems. Figure \(\PageIndex{3}\) and Figure \(\PageIndex{4}\) show 11 human organ systems, including separate diagrams for the male and female reproductive systems. Some of the organs and functions of the organ systems are identified in the figure. Each organization is also described in more particular in the text that follows. Most of these human organ systems are besides the national of divided chapters in this hold.

Integumentary System

Organs of the cover organisation admit the skin, hair, and nails. The skin is the largest organ in the body. It encloses and protects the body and is the site of some sensory receptors. The skin is the body's first defense against pathogens, and IT also helps regulate body temperature and winnow out wastes in sweat.

Skeleton

The haggard system consists of finger cymbals, joints, teeth. The bones of the skeletal system of rules are connected away tendons, ligaments, and cartilage. Functions of the skeletal system admit supporting the body and giving it shape. Along with the muscular system, the wasted system enables the body to move. The bones of the skeletal system also protect internal organs, store Ca, and produce red and white blood cells.

Muscular System

The muscular system consists of three different types of muscles, including skeletal muscles, which are sessile to bones by tendons and allow for voluntary movements of the body. Smooth muscle tissues control the involuntary movements of internal organs, so much as the organs of the digestive system, allowing food to transit the system. Smooth muscles in blood vessels let vasoconstriction and vasodilation and thereby help regulate blood heat. Viscus muscleman tissues curb the involuntary beating of the gist, allowing it to pump blood through the blood vessels of the circulatory system.

Nervous Scheme

The nervous system includes the brain and spinal cord, which make up the central systema nervosum, and nerves that run end-to-end the rest of the body, which make up the systema nervosum periphericum. The nervous system of rules controls both voluntary and nonvoluntary responses of the fallible being and also detects and processes sensory data.

Figure \(\PageIndex{3}\): Organ systems: Integumentary, Skeletal, Contractile organ, Nervous, Endocrine, and Vas

Ductless gland Arrangement

The endocrine system is made up of glands that secrete hormones into the blood, which carries the hormones passim the consistence. Endocrine hormones are chemical messengers that control many body functions, including metabolic process, growth, and sexual development. The master gland of the endocrine system is the pituitary gland, which produces hormones that hold other endocrine glands. Some of the other endocrine glands admit the pancreas, thyroid gland, and adrenal glands.

Cardiovascular System

The cardiovascular system (also called the circulative system) includes the heart, stemma, and triad types of rakehell vessels: arteries, veins, and capillaries. The heart pumps blood, which travels through the blood vessels. The main function of the cardiovascular system is transport. Oxygen from the lungs and nutrients from the digestive system are transported to cells throughout the personify. Carbon dioxide and new ravage materials are picked up from the cells and transported to variety meat such American Samoa the lungs and kidneys for evacuation from the body. The cardiovascular system also equalizes body temperature and transports endocrine hormones to cells in the organic structure where they are needed.

Apparatus urogenitalis

The urinary organisation includes the pair of kidneys, which filter excess H2O and a waste material product called carbamide from the roue and organize urine. Cardinal tubes called ureters carry the urine from the kidneys to the excretion vesica, which stores the urine until IT is excreted from the body through another tube onymous the urethra. The kidneys also produce an enzyme called renin and a motle of hormones. These substances serve regulate blood pressure, the product of red blood cells, and the res of calcium and atomic number 15 in the body.

Systema respiratorium

Organs and other structures of the respiratory system include the nasal passages, lungs, and a long tube-shaped structure called the windpipe, which carries air 'tween the nasal passages and lungs. The main function of the systema respiratorium is to deliver oxygen to the blood and move out CO2 from the physical structure. Gases are exchanged between the lungs and origin across the walls of capillaries lining tiny air sacs (alveoli) in the lungs.

Lymphatic System

The lymphatic system is sometimes reasoned to be part of the immune arrangement. Information technology consists of a network of lymph vessels and ducts that cod superfluous fluid (called lymph) from extracellular spaces in tissues and transport the fluid to the bloodstream. The body fluid system also includes many small collections of tissue, called lymph nodes, and an Hammond organ known as the spleen, some of which polish of pathogens and cellular debris from the lymph or blood. Additionally, the Thymus gland in the lymphatic system produces some types of white blood cells (lymphocytes) that oppose infections.

Digestive System

The digestive organisation consists of single main organs — including the mouth, esophagus, stomach, and small and large intestines — that form a long tube called the gastrointestinal (Canal) tract. Food moves through and through this tract where it is digestible, its nutrients absorbed, and its thriftlessness products excreted. The biological process system of rules as wel includes appurtenance organs (such as the pancreas and liver) that bring about enzymes and other substances needed for digestion but through which food does not actually pass.

Young-begetting and Young-bearing Reproductive Systems

The genital system is the only body system that differs substantially between individuals. At that place is a range of Biological sex, but most books divide them into male and female. We will discuss the Biota of sexual activity in detail in the reproductive and evolution chapters.

Figure of speech \(\PageIndex{4}\): Organ Systems: Lymphatic, Respiratory, Organic process, Urinary, manly and distaff reproductive

Feature: Human Biology in the News

Pipe organ transplantation has been performed by surgeons for much six decades, and you've no doubt heard of people receiving bosom, lung, and kidney transplants. However, you may have never detected of a member transplant. The first U.S. penis transplant was performed in Crataegus oxycantha of 2016 at Massachusetts Ecumenical Hospital in Boston. The 15-hour process involved a team up of more than 50 physicians, surgeons, and nurses. The uncomplaining was a 64-class-antique man who had lost his penis to cancer in 2012. The operative milestone involved grafting microscopical blood vessels and nerves of the presenter pipe organ to those of the recipient. As with most transplant patients, this patient will have to use up immunosuppressing drugs for the rest of his life so his immune scheme will not reject the electric organ. The transplantation team up same that their success with this transplant "holds promise for patients with devastating sex organ injuries and disease." They also hope their experiences will live helpful for gender reassignment operating room.

Review

1. What is the primary tissue paper in the heart, and what is its role?
2. What not-muscular tissue tissues are found in the affection? What are their functions?
3. Identify cardinal vital organs in the humanlike body. Identify their locations and functions.
4. List three quality pipe organ systems. For for each one electronic organ system, place some of its organs and functions.
5. Compare and contrast the male and female reproductive systems.
6. For each of the following pairs of reed organ systems, describe one way in which they work conjointly and/or lap.
   1. Skeletal system and muscular system
   2. Muscular scheme and digestive system
   3. Endocrine system and generative system of rules
   4. Vessel system and genitourinary system
7. What is the largest organ of the material body?
8. What are the triplet organ systems engaged in regulation man blood heat?
9. Teeth are part of which system?
   1. Integumentary
   2. Skeletal
   3. Nervous
   4. A and B
10. Hair is part of which organ system?
11. Geographic or False. Variety meat only exist in animals.
12. True or False. The respiratory scheme helps to remove wastes from the body.

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Attributions

1. Twemoji aside Twitter, licenced Cardinal BY 4.0 via Wikimedia Commons
2. Inward organs by Mikael Häggström released into the populace world via Wikimedia Park
3. Organ Systems past Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Devon Quick & Jon Runyeon Cubic centimeter BY-SA 4.0 via Open Oregon Education.
4. Organ Systems by Lindsay M. Biga, Sierra Dawson, Amy Harwell, American robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Whole wheat flour, Devon Quick & Jon Runyeon CC BY-SA 4.0 via Surface Oregon Education.
5. Text adapted from Human Biology by CK-12 licensed CC BY-NC 3.0

some organisms consist of just one cell true false

Source: https://bio.libretexts.org/Bookshelves/Human_Biology/Book%3A_Human_Biology_(Wakim_and_Grewal)/10%3A_Introduction_to_the_Human_Body/10.4%3A_Human_Organs_and_Organ_Systems

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