Question

Что такое кровь???? ​

Answer 1

Кровь – это, прежде всего, среда, осуществляющая транспорт различных веществ в организме человека. Она переносит дыхательные газы – кислород и углекислый газ – как в физически растворенном, так и в химически связанном виде. Кислород переносится от легких к потребляющим его тканям, а углекислый газ – от тканей к легким.

Answer 2

Кровь — это особая соединительная ткань организма человека, имеющая жидкую форму. Она передвигается по кровеносным сосудам человека с помощью силы сокращения сердца.

Answer 3

What is blood?

Blood is a vital fluid that circulates throughout the body, delivering essential substances such as oxygen, nutrients, hormones, and immune cells to various tissues and organs. It also helps remove waste products from the body. Blood is composed of different components, including red blood cells, white blood cells, platelets, and plasma.

Red blood cells (erythrocytes) are responsible for carrying oxygen from the lungs to the body's tissues and removing carbon dioxide. They contain a protein called hemoglobin, which binds to oxygen and gives blood its red color.

White blood cells (leukocytes) are part of the immune system and help defend the body against infections and diseases. There are different types of white blood cells, each with specific functions in the immune response.

Platelets (thrombocytes) are small cell fragments that play a crucial role in blood clotting. When a blood vessel is damaged, platelets gather at the site to form a clot and prevent excessive bleeding.

Plasma is the liquid component of blood and makes up about 55% of its volume. It is a yellowish fluid that contains water, proteins, hormones, electrolytes, and other substances. Plasma helps transport nutrients, hormones, and waste products throughout the body.

Blood is constantly circulating through a network of blood vessels, including arteries, veins, and capillaries. The heart acts as a pump to propel blood through this circulatory system.