System Of The Body

Definition of Body Systems We can define body systems as groups of organs and tissues that work together to perform important jobs for the body. There are some organs in our body which are part of more than one body system as they serve more than one function. Apart from these, other organs and tissues serve only one purpose in the body system.

The main systems of the human body are:
Circulatory system :
Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Keeps the body’s temperature in a safe range.
Digestive system and Excretory system :
More items…

The highest level of body organization, then, is that of the organ system. The body includes nine major organ systems, each composed of various organs and tissues that work together as a functional unit. The chief constituents and prime functions of each system are summarized below.

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Vascular System Of The Human Body

What is the Vascular System? The human body has two circulatory systems–the cardiovascular (vascular) system and the lymphatic system. The center of our attention here will be on the vascular system. So, just what is the vascular system?

What is the vascular system? 1 Arteries. . These are blood vessels that carry oxygenated blood away from the heart to the body. 2 Veins. . These are blood vessels that carry blood from the body back into the heart. 3 Capillaries. . These are tiny blood vessels between arteries and veins that distribute oxygen-rich blood to the body. More …

Simply put, the vascular system is a system of vessels with a vessel being defined as a hollow tube for carrying something. Blood vessels, therefore, are hollow tubes for carrying blood and are located throughout your body. There are three varieties of blood vessels: Arteries that carry blood away from the heart.

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Spinal Nervous System

(The spinal nerves and the area that they innervate are described in the section The peripheral nervous system: Spinal nerves.) central nervous system: humanThe brain and the spinal cord constitute the central nervous system.Created and produced by QA International.

Nerves – Neural tissue that conducts electrical impulses (messages) from the brain and spinal cord to all other parts of the body; also conveys sensory information from the body to the central nervous system. Nerve root – The initial portion of a spinal nerve as it originates from the spinal cord.

The central nervous system is composed of the spinal cord and the brain , The spinal cord is a cylindrical cord from which the spinal nerves extend , The spinal cord is 40 to 50 cm long and 1 cm to 1.5 cm in diameter .

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Renal Arteries

Clinical significance. Renal artery stenosis, or narrowing of one or both renal arteries will lead to hypertension as the affected kidneys release renin to increase blood pressure to preserve perfusion to the kidneys. RAS is typically diagnosed with duplex ultrasonography of the renal arteries.

Due to the position of the aorta, the inferior vena cava, and the kidneys in the body, the right renal artery is normally longer than the left renal artery. The right passes behind the inferior vena cava, the right renal vein, the head of the pancreas, and the descending part of the duodenum. The right is somewhat lower than…

aberrant renal arteries: enter via the renal capsule rather than the hilum. early branching (or prehilar branching): occurs in ~10% of the population occurs within 1.5-2.0 cm of origin in the left renal artery or in the retrocaval segment of the right renal artery.

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Picture Of Lymphatic System

Lymph very closely resembles the plasma found in the veins: it is a mixture of about 90% water and 10% solutes such as proteins, cellular waste products, dissolved gases, and hormones. Lymph may also contain bacterial cells that are picked up from diseased tissues and the white blood cells that fight these pathogens.

Lymph nodes, lymph, and lymphatic vessels comprise the lymphatic system of the body. Lymph nodes filter lymph, a clear, sticky fluid that bathes body cells and collects waste products and debris. Lymph also carries white blood cells, which are responsible for protecting the body against viruses and bacteria and may trap cancer cells.

Transport of Fatty Acids. Another major function of the lymphatic system is the transportation of fatty acids from the digestive system. The digestive system breaks large macromolecules of carbohydrates, proteins, and lipids into smaller nutrients that can be absorbed through the villi of the intestinal wall.

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Urinary Tract System Anatomy

Anatomy of the Urinary System How does the urinary system work? The urinary system’s function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra.

[edit on Wikidata] The urinary system, also known as the renal system or urinary tract, consists of the kidneys, ureters, bladder, and the urethra.

The urinary tract is the body’s drainage system for the eventual removal of urine. The kidneys have an extensive blood supply via the renal arteries which leave the kidneys via the renal vein.

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Pics Of Skeletal System

Regardless of age or sex, the skeletal system can be broken down into two parts, known as the axial skeleton and the appendicular skeleton. The adult axial skeleton consists of 80 bones. It’s made up of the bones that form the vertical axis of the body, such as the bones of the head, neck, chest, and spine. The adult skull comprises 22 bones.

The skeleton acts as a scaffold by providing support and protection for the soft tissues that make up the rest of the body. The skeletal system also provides attachment points for muscles to allow movements at the joints.

Providing Physical Structure And Canine Skeletal System X-ray, lungs, skeletal system,. The marked region on the image display is made to increase the effectiveness it is not marked by a physician Skeleton with muscles side.

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The Systems Of The Body

The main systems of the human body are:
Circulatory system :
Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Keeps the body’s temperature in a safe range.
Digestive system and Excretory system :
More items…

Definition of Body Systems We can define body systems as groups of organs and tissues that work together to perform important jobs for the body. There are some organs in our body which are part of more than one body system as they serve more than one function. Apart from these, other organs and tissues serve only one purpose in the body system.

The human body comprises 12 distinct human body systems, and their functions reflect their names: cardiovascular, digestive, endocrine, immune, integumentary, lymphatic, muscular, nervous, reproductive, respiratory, skeletal and urinary.

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Picture Of Spine And Nerves

Spinal nerves are the major nerves of the body. A total of 31 pairs of spinal nerves control motor, sensory, and other functions. These nerves are located at the cervical, thoracic, lumbar, sacral, and coccygeal levels.

Spine and Nerves. Many nerves of the peripheral nervous system, which transport signals to and from specific parts of the body, meet the spinal cord at the vertebral column. Other roles for the vertebrae include helping support the body’s weight and providing an anchor for the ribs. The typical adult has 33 total vertebrae,…

The spinal cord does not run through the lumbar spine (lower back). After the spinal cord stops in the lower thoracic spine, the nerve roots from the lumbar and sacral levels come off the bottom of the cord like a “horse’s tail” (named the cauda equina) and exit the spine.

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Vein System Of The Human Body 744×1195

It’s a single layer of endothelium cells and some connective tissue. This layer sometimes contains one-way valves, especially in the veins of your arms and legs. These valves prevent blood from flowing backward. Veins are often categorized based on their location and any unique features or functions.

The pancreatic veins ( vv. pancreaticæ) consist of several small vessels which drain the body and tail of the pancreas, and open into the trunk of the lienal vein. The inferior mesenteric vein ( v. mesenterica inferior) returns blood from the rectum and the sigmoid, and descending parts of the colon.

The low pressure venous system needs the contraction of muscles to return the blood to the heart. There are four major types of veins. Examples include pulmonary and systemic veins as well as superficial and deep veins. Pulmonary veins carry oxygenated blood to the heart’s left atrium from the lungs,…

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The Nervous System Chart

The Central Nervous System is the integration and command center of the body. It consists of the brain, spinal cord and the retinas of the eyes. The Peripheral Nervous System consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect the central nervous system to arms, hands,…

Nervous System. The nervous system has two major parts: the central nervous system (CNS) and the peripheral nervous system (PNS ). The central system is the primary command center for the body, and is comprised of the brain and spinal cord. The peripheral nervous system consists of a network of nerves that connects the rest of the body to the CNS.

Structural Divisions of the Nervous System. The nervous system can be divided into two major regions: the central and peripheral nervous systems. The central nervous system (CNS) is the brain and spinal cord, and the peripheral nervous system (PNS) is everything else (Figure 8.2).

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What Is The Female Reproductive System

The female reproductive system is made up of the internal and external sex organs that function in reproduction of new offspring.

Both male and female reproductive systems have internal and external structures. Reproductive organs are considered to be either primary or secondary organs based on their role. The primary reproductive organs of either system are called gonads (ovaries and testes) and these are responsible for gamete (sperm and egg cell) and hormone production.

The primary function of the reproductive system is to produce male and female sex cells and to ensure the growth and development of offspring. The reproductive system is comprised of male and female reproductive organs and structures.

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The Digestion System

Structures and functions of the human digestive system The digestive tract begins at the lips and ends at the anus.

Digestive System Physiology. The digestive system is responsible for taking whole foods and turning them into energy and nutrients to allow the body to function, grow, and repair itself. The six primary processes of the digestive system include: Ingestion of food.

Structures and functions of the human digestive system. The digestive tract begins at the lips and ends at the anus. It consists of the mouth, or oral cavity, with its teeth, for grinding the food, and its tongue, which serves to knead food and mix it with saliva; the throat, or pharynx; the esophagus; the stomach; the small intestine,…

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The Muscular System Diagram

Muscular system. The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture and circulates blood throughout the body. The muscular systems in vertebrates are controlled through the nervous system although some muscles (such as the cardiac muscle)…

The muscular system can be broken down into three types of muscles: skeletal, smooth and cardiac. The muscles in the body support movement, help maintain posture, and circulate blood and other substances throughout the body.

The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture and circulates blood throughout the body. The muscular systems in vertebrates are controlled through the nervous system although some muscles (such as the cardiac muscle)…

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Picture Of The Lymphatic System

The lymphatic system is an interconnected system of vessels, nodes, and spaces in the body. Lymph nodes help isolate the agent responsible for sickness in the body.

Lymph nodes, lymph, and lymphatic vessels comprise the lymphatic system of the body. Lymph nodes filter lymph, a clear, sticky fluid that bathes body cells and collects waste products and debris. Lymph also carries white blood cells, which are responsible for protecting the body against viruses and bacteria and may trap cancer cells.

The lymphatic system is an extensive and interconnected system of vessels, spaces, and nodes in the body which circulates lymph, a fluid made from protein and other fluids.

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Spine And Nerves Illustrations

Spinal nerves are the major nerves of the body. A total of 31 pairs of spinal nerves control motor, sensory, and other functions. These nerves are located at the cervical, thoracic, lumbar, sacral, and coccygeal levels.

Motor messages to the spinal nerves originate in the brain. The motor strip (homunculus) in the brain initiates a command for muscle control. This command is sent to the spine through nerve impulses and then travels through the motor root to the spinal nerve.

These are muscle movement, sensation, and autonomic functions (control of internal organs). Because their function is so well understood, when a particular spinal nerve becomes impaired, the resulting deficit often pinpoints which spinal nerve or nerves are affected. Motor messages to the spinal nerves originate in the brain.

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Pictures Of Nervous System

Your Command Central Made up of billions of nerve cells called neurons, your nervous system is what lets you do everything from breathe to walk to dream. It has two main parts: the central nervous system, which includes the brain and spinal cord, and the peripheral nervous system (all the other nerves in your body).

Sympathetic Nervous System. This part of your autonomic system is in charge of your body’s “fight or flight” response. When you come across a threat, your sympathetic nervous system kicks into gear, quickly changing body processes like your breathing and heart rate so that you have extra energy and are ready to face the danger or run away.

Nervous System. The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.

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The Endocrine System Diagram

Endocrine System Diagram The endocrine system consists of glands that are found all over the body, which help you to produce hormones. The endocrine system is a collection of glands that secrete various chemicals called hormones. The steroid hormones are derived from cholesterol after a series of biochemical reactions.

This organ connects your endocrine system with your nervous system. Its main job is to tell your pituitary gland to start or stop making hormones. Pituitary gland. This is your endocrine system’s master gland. It uses information it gets from your brain to tell other glands in your body what to do.

The glands of the endocrine system include: Hypothalamus. While some people don’t consider it a gland, the hypothalamus produces multiple hormones that control the pituitary gland. It’s also involved in regulating many functions, including sleep-wake cycles, body temperature, and appetite.

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Pics Of Muscular System

Muscular System Parts. 1 Skeletal Muscle. Striated muscle, or Skeletal muscle, is the tissue most commonly associated with the muscular system. This type of muscle attaches to … 2 Visceral Muscle. 3 Cardiac Muscle.

The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person’s body weight.

Muscular System Physiology Function of Muscle Tissue. The main function of the muscular system is movement. Muscles are the only tissue in the body that has the ability to contract and therefore move the other parts of the body. Related to the function of movement is the muscular system’s second function: the maintenance of posture and body …

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What Are The Functions Of The Skeletal System

The skeletal system is the body system composed of bones and cartilage and performs the following critical functions for the human body: supports the body. facilitates movement. protects internal organs. produces blood cells. stores and releases minerals and fat.

The skeletal system’s main function is to provide support for the body. For example, the spinal column provides support for the head and torso. The legs, on the other hand, support and bear the weight of the upper body while a person stands.

The muscular and skeletal systems work together as the musculoskeletal system, which enables body movement and stability. When muscles contract, they pull on bones of the skeleton to produce movement or hold the bones in a stable position.

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