?'s about lymphatic system?

Question

Lymph movement is assisted by?...
A. contraction of the skeletal muscle
B. contraction of smooth muschle in lymph vessel
C. pressure changes in the thorax during respiration
D. compression of lymphatic vessels
e. all of the above


The lymphatic systems is involved in?
A. fat absorbtion form the digestive tract
B. transporting lymph from the intestines too the liver
C maintainence of pH in the tissues
D production of erythrocytes
E. protein metabolism...

Answer 1

1. E

2. A The lymphatic does not empty its contents into the liver. It empties its contents into the thoracic duct. The digested material absorbed by the micro villi go to the liver via the hepatic portal vein.

Answer 2

The lymphatic system plays two major roles in physiology. The first is the return of tissue fluid from capillary beds back into the circulation. When blood reaches these sites, it has slowed down drastically and with the capillaries being leaky to enable exchange, plasma is lost from the blood. This loss is recouped to maintain the overall pressure by the plasma being taken up by lymphatic vessels in the tissues. The plasma is now called lymph (or interstitial fluid) and is carried in the lymphatic vasculature eventually being dumped back into the blood circulation system at the thoracic duct in the chest. The other major role is in immunity and it is during the travels of the plasma/lymph through the lymphatic vasculature that the body will check for disease. Lymph-nodes are small organs sited periodically along the lymphatic vessels through which lymph from the tissues will be seived. If infection is present anywhere in the body, the draining fluids from those tissues will rapidly find their way into a local lymphnode where it will be sampled by resident macrophages, dendritic cells and B cells. If there is infection in the tissues, tissue immune cells called dendritic cells will recognise and take up this infection eg a bacteria or virus or fungus, and deliver it also via the lymphatics to the lymphnodes where it will deliver it to resident T cells and B cells. Between the many interactions between Dendritic cells, free infection, T cells and B cells, an immune response will be made and antibodies from B cells and cytotoxic T cells and T-helper cells will be released to engage the infection and eradicate it. hope this helps.

Answer 3

The correct option to the first question is option 'e'(all of the above). To me, options B and D seem to be the same. Also, another contributing factor to the lymph flow, are the valves present in the lymph vessels.

The correct answer to the second question is option A.

Answer 4

second answer def d as lymphatic sys is about immunology, infection etc look up imminulogy plus lymphatic system in google i think ans to 1. is d but unsure

Answer 5

here are the RIGHT ANSWERS
1.E
2.A,cos one of the imp functions of lymphatic system is absorption of fatty acids and subsequent transport of fat,chyle, to the circulatory system

Answer 6

1. E
2. NONE

Answer 7

E & D