Question

Transportation of fluid away from the tissues of the body toward the thoracic cavity occurs via the lymphatic ________________or vessels.

A) Capillaries
B) Arteries
C) Veins
D) Ducts

Answer 1

The transportation of fluid away from the tissues of the body towards the thoracic cavity occurs via the lymphatic vessels or ducts. Lymph, which leaks out of capillaries, accumulates between cells and enters the lymphatic system. Lymph moves through lymphatic vessels and drains back into the bloodstream in the chest.

Step-by-step explanation:

The transportation of fluid away from the tissues of the body towards the thoracic cavity occurs via the lymphatic vessels or ducts. These vessels form a body-wide circulatory system known as the lymphatic system.

Lymph, which is the fluid that leaks out of capillaries into the spaces between cells, accumulates between cells and diffuses into tiny lymphatic vessels. This lymph then moves through the lymphatic system from smaller to larger vessels and eventually drains back into the bloodstream in the chest.

Lymphatic vessels contain numerous valves that keep lymph flowing in one direction, preventing backflow. Unlike blood, lymph is not actively pumped through its network of vessels, but rather moves through lymphatic vessels via the contractions of the vessels themselves and external forces applied by skeletal muscles.

Answer 2

The lymphatic system is responsible for transporting lymph from body tissues towards the thoracic cavity through lymphatic vessels and ducts, facilitated by muscle movements and valves. Lymph enters the bloodstream via the right lymphatic duct or the thoracic duct, depending on the body region it's coming from. The correct answer to the given question is lymphatic ducts. So, the correct option is D) Ducts.

Step-by-step explanation:

Lymphatic System and Vessels

The lymphatic system is a critical part of the immune system and consists of a network of vessels that circulate lymph, a fluid derived from interstitial fluid. Lymphatic vessels transport fluid away from tissues and towards the thoracic cavity, proceeding through nodes that filter and destroy pathogens. These vessels are not pressurized by the heart like the cardiovascular system; instead, the movement of lymph is facilitated by the contraction of skeletal muscles, body movements, and breathing, as well as by one-way valves that prevent backflow.

Lymph starts in the lymphatic capillaries, moving through increasingly larger vessels, and eventually enters the bloodstream via the lymphatic ducts at the junction of the jugular and subclavian veins. The overall lymphatic drainage system is asymmetric, with the right lymphatic duct serving the upper right side of the body, while the thoracic duct accommodates the lymph from the rest of the body.

For the question at hand, the correct answer relates to the system and vessels responsible for the transportation of lymph away from body tissues. Since lymph moves through this network and not through other types of vessels like arterioles or veins, the mention of the thoracic cavity particularly points out the involvement of these specific vessels in the lymphatic system. Therefore, when referring to the transportation of fluid away from the tissues of the body toward the thoracic cavity, it occurs via the lymphatic ducts. In conclusion, the transportation of fluid away from the tissues of the body toward the thoracic cavity occurs via the lymphatic ducts or vessels.