Cardiovascular System Parts And Functions Pdf

cardiovascular system parts and functions pdf

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Blood must always circulate to sustain life. It carries oxygen from the air we breathe to cells throughout the body.

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Oxygen enters the bloodstream through tiny membranes in the lungs that absorb oxygen as it is inhaled. As the body uses the oxygen and processes nutrients, it creates carbon dioxide, which your lungs expel as you exhale. A similar process occurs with the digestive system to transport nutrients, as well as hormones in the endocrine system.

Circulatory system

Blood circulates through a network of vessels throughout the body to provide individual cells with oxygen and nutrients and helps dispose of metabolic wastes. The heart pumps the blood around the blood vessels. The plasma is largely water, containing proteins, nutrients, hormones, antibodies, and dissolved waste products. The heart is a hollow muscular organ which beats over , times a day to pump blood around the body's 60, miles of blood vessels. The right side of the heart receives blood and sends it to the lungs to be oxygenated, while the left side receives oxygenated blood from the lungs and sends it out to the tissues of the body. In a normal heart beat the atria contract while the ventricles relax, then the ventricles contract while the atria relax.

Pulmonary Circulation and Systemic Circulation: The Routes and Function of Blood Flow

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The circulatory system , also called the cardiovascular system or the vascular system , is an organ system that permits blood to circulate and transport nutrients such as amino acids and electrolytes , oxygen , carbon dioxide , hormones , and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases , stabilize temperature and pH , and maintain homeostasis. The circulatory system includes the lymphatic system , which circulates lymph. Lymph is essentially recycled excess blood plasma after it has been filtered from the interstitial fluid between cells and returned to the lymphatic system. The cardiovascular from Latin words meaning "heart" and "vessel" system comprises the blood, heart, and blood vessels. The circulatory system of the blood is seen as having two components, a systemic circulation and a pulmonary circulation. While humans, as well as other vertebrates , have a closed cardiovascular system meaning that the blood never leaves the network of arteries , veins and capillaries , some invertebrate groups have an open cardiovascular system. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to be returned to the blood.

Human cardiovascular system , organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the blood is propelled by a muscular heart. Two circuits, the pulmonary and the systemic, consist of arterial , capillary , and venous components. The primary function of the heart is to serve as a muscular pump propelling blood into and through vessels to and from all parts of the body. The arteries, which receive this blood at high pressure and velocity and conduct it throughout the body, have thick walls that are composed of elastic fibrous tissue and muscle cells.

General Features of the Cardiovascular System

The cardiovascular system can be thought of as the transport system of the body. This system has three main components: the heart , the blood vessel and the blood itself. Blood can be thought of as a fluid which contains the oxygen and nutrients the body needs and carries the wastes which need to be removed. The following information describes the structure and function of the heart and the cardiovascular system as a whole.

Major Functions of the Cardiovascular System

Они не реагировали. - Выключите ТРАНСТЕКСТ! - потребовала. Остановка поисков ключа Цифровой крепости высвободила бы достаточно энергии для срабатывания дверных замков.

Она пыталась осознать истинный смысл случившегося. Всю свою жизнь она посвятила взламыванию шифров, отвергая саму возможность разработки абсолютно стойкого шифра. Любой шифр можно взломать - так гласит принцип Бергофского.

Circulatory system

 - Сьюзан нахмурилась.  - Итак, вы полагаете, что Северная Дакота - реальное лицо. - Боюсь, что. И мы должны его найти. Найти тихо. Если он почует, что мы идем по его следу, все будет кончено. Теперь Сьюзан точно знала, зачем ее вызвал Стратмор.

Рука Сьюзан задрожала, и пейджер упал на пол возле тела Хейла. Сьюзан прошла мимо него с поразившим его выражением человека, потрясенного предательством. Коммандер не сказал ни слова и, медленно наклонившись, поднял пейджер. Новых сообщений не. Сьюзан прочитала их. Стратмор в отчаянии нажал на кнопку просмотра.

Офицер был шокирован. - Вы же только что прибыли. - Да, но человек, оплативший авиабилет, ждет.

Соблазнительный образ Кармен тут же улетучился. Код ценой в один миллиард долларов. Некоторое время он сидел словно парализованный, затем в панике выбежал в коридор. - Мидж. Скорее .

 - Она направилась к двери. - Ты уходишь. - Ты же знаешь, что я бы осталась, - сказала она, задержавшись в дверях, - но у меня все же есть кое-какая гордость. Я просто не желаю играть вторую скрипку - тем более по отношению к подростку.

 - Я протестую. Против вашего присутствия в моем кабинете.

5 COMMENTS

Ricarda S.

REPLY

The heart is usually situated in the middle of the thorax with the largest part of the dominant site of resistance to flow in the vascular system, play major roles in.

Fredeswinda P.

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more muscular than the right ventricle. Describe the components and functions of the. 5. conducting system of the heart. Explain the events of the cardiac cycle.

Chris M.

REPLY

Describe the major organs of the cardiovascular system and their functions. 4. Describe the anatomy of the heart. 5. Describe the flow of blood through the heart​.

Yvonne H.

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oxygenated blood to all parts of the body except the lungs. ▻ Superior vena PAUSe POINT. Explain the function of the heart in the cardiovascular system. Hint.

Adalbaro S.

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cava (forward parts of body) and caudal vena cava (blood from rear parts of body​). 2. Schematic representation of the functional circulatory system. A network.

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