Question

где нет лимфатических сосудов? 1)сердце 2)печень 3)почки 4)хрусталик глаза 5)селезенка 6)централ нервная система 7) поперечно-полосатая мышечная ткань

Answer 1

где нет лимфатических сосудов   1)сердце 7) поперечно-полосатая мышечная ткань

Answer 2

ну как по мне так в центральной нервной системе их точно нет,а так же в селезенке,в хрусталике глаза

Answer 3

Where are there no lymphatic vessels?

Lymphatic vessels are an essential part of the lymphatic system, which helps in the transportation of lymph fluid, immune cells, and waste products throughout the body. While lymphatic vessels are found in various parts of the body, there are certain organs and tissues where they are absent. Let's go through the options you provided and identify where lymphatic vessels are not present:

1) Heart: The heart does not have lymphatic vessels. The heart is primarily responsible for pumping blood throughout the body, and it has its own specialized network of blood vessels for this purpose.

2) Liver: The liver does have lymphatic vessels. The liver plays a crucial role in detoxification, metabolism, and the production of bile. It receives blood from the hepatic portal vein, which carries nutrient-rich blood from the digestive system, and this blood is eventually drained by lymphatic vessels.

3) Kidneys: The kidneys do have lymphatic vessels. The kidneys are responsible for filtering waste products from the blood and producing urine. Lymphatic vessels are present in the kidneys to help remove excess fluid and waste products.

4) Lens of the eye: The lens of the eye does not have lymphatic vessels. The lens is a transparent structure located behind the iris and is primarily responsible for focusing light onto the retina. Lymphatic vessels are not necessary for the lens to perform its function.

5) Spleen: The spleen does have lymphatic vessels. The spleen is an important organ of the immune system and acts as a filter for blood, removing old or damaged red blood cells and storing platelets. Lymphatic vessels are present in the spleen to aid in the circulation of lymph fluid and immune cells.

6) Central nervous system: The central nervous system, which includes the brain and spinal cord, does not have lymphatic vessels. However, recent research has discovered the presence of a lymphatic-like system called the glymphatic system in the brain. This system helps in the clearance of waste products from the brain, but it is distinct from the traditional lymphatic system.

7) Striated skeletal muscle tissue: Striated skeletal muscle tissue does not have lymphatic vessels. This type of muscle tissue is responsible for voluntary movements and is found in various parts of the body, such as the limbs. Lymphatic vessels are not present within the muscle tissue itself.

In summary, lymphatic vessels are not found in the heart, the lens of the eye, the central nervous system, and striated skeletal muscle tissue. However, it is important to note that the absence of lymphatic vessels in these organs and tissues does not mean that they are completely isolated from the lymphatic system. Other mechanisms may be involved in the removal of waste products and the maintenance of tissue fluid balance in these areas.