I think it is C, Mark me brainliest if it helped
Hi the answer to your question would be the signals may be transmitted by Integrins.
Hope this helps.
Answer:
Superior vena cava
Explanation:
Of the two vena cava, the superior vena cava is the large vein without valves that is responsible for conveying de-oxygenated blood from the upper extremities and body (neck, chest, arm and head) above the diaphragm to the right artrium.
Although the superior vena cava is a large vein, it also short; it is about 2 cm wide and 7 cm long.
When there is an obstruction of the superior vena cava, it can result to the enlargement of the veins and could lead to chest pain and breathlessness.
Hello! The correct answer would be D. Cnidarians. :)
-Cheerio, and have a nice day!
Because around the world we dont all speak the same so by using these names we know we are talking about the same animals.
