Question

Кровь не транспортирует? а)антитела б)гормоны в)кислород и углекислый газ г)пищеварительные ферменты

Answer 1

Пищеварительные ферменты

Answer 2

Blood and its Functions

Blood is a vital fluid in the human body that performs various essential functions. It is responsible for transporting oxygen, nutrients, hormones, and waste products throughout the body. Additionally, blood plays a crucial role in maintaining homeostasis, regulating body temperature, and defending against infections.

Components of Blood

Blood consists of several components, including red blood cells (erythrocytes), white blood cells (leukocytes), platelets (thrombocytes), and plasma. Each component has specific functions within the body.

- Red blood cells (erythrocytes): Red blood cells are responsible for carrying oxygen from the lungs to the body's tissues and removing carbon dioxide, a waste product, from the tissues to the lungs for exhalation.

- White blood cells (leukocytes): White blood cells are a crucial part of the immune system and help defend the body against infections and foreign substances. They include different types of cells, such as neutrophils, lymphocytes, monocytes, eosinophils, and basophils.

- Platelets (thrombocytes): Platelets are involved in blood clotting. When a blood vessel is damaged, platelets aggregate at the site to form a clot, preventing excessive bleeding.

- Plasma: Plasma is the liquid component of blood and serves as a medium for transporting various substances, including hormones, nutrients, waste products, and antibodies.

Blood's Role in Transporting Substances

Now let's address the specific substances mentioned in your question and whether blood transports them:

a) Antibodies: Antibodies are proteins produced by white blood cells called B cells. While antibodies are present in the blood, they are not directly transported by blood. Instead, they are produced by B cells and released into the bloodstream to circulate throughout the body, where they bind to specific antigens and help in immune responses.

b) Hormones: Hormones are chemical messengers produced by various glands in the body. While hormones are not primarily transported by blood, they rely on the bloodstream to reach their target organs or tissues. Hormones are secreted into the bloodstream by endocrine glands and then carried to their target cells, where they exert their effects.

c) Oxygen and Carbon Dioxide: Blood plays a crucial role in transporting oxygen and carbon dioxide. Oxygen is carried by red blood cells, specifically by a molecule called hemoglobin. Hemoglobin binds to oxygen in the lungs and releases it to the body's tissues. Carbon dioxide, a waste product of cellular respiration, is transported back to the lungs by red blood cells, where it is exhaled.

d) Digestive Enzymes: Digestive enzymes are primarily involved in the process of digestion, breaking down food into smaller molecules that can be absorbed by the body. While blood does not directly transport digestive enzymes, the products of digestion, such as nutrients, are absorbed into the bloodstream through the walls of the digestive tract. Once absorbed, these nutrients are transported by the blood to various tissues and organs for utilization.

In summary, blood plays a crucial role in transporting oxygen, carbon dioxide, nutrients, hormones, and waste products throughout the body. While blood does not directly transport antibodies or digestive enzymes, it serves as a medium for their distribution or absorption.

I hope this clarifies your question! Let me know if you have any further inquiries.