Question

True or false

1.In the primary immune response, there is no antibody production in the the lag phase, only B cell proliferate and differentiate.

2. The hydrostatic pressure gradient drives water_________capillaries, and the colloid osmotic pressure drives water_______capillaries.

out of; out of out of; into into; out of into; into

3. When B cells are activated, they differentiate into:

Plasma cells

Memory cells

more than one answers are correct

none of the answers are correct

4.HIV specifically infects the cytotoxic T-cells necessary to activate both B-cell and T helper cell immune response.

5.Arteries always carry oxygenated blood away from the heart and veins always carry deoxygenated blood toward the heart.

6. Your friend tests her snake-wrangling skills on an eastern diamondback rattlesnakes and is bitten injected with the snake’s venom. In the ER, doctors administer the antivenin CroFab, which contains antibodies to the toxins in snake venom. This is an example of artificially acquired ____?__immunity and will not confer any lasting protection to your friend.

7.Lymph from the lower limbs drains into the right lymphatic duct.

Answer 1

1. True. During lag phase, there is no antibody detected in the circulation.
2. The Hydrostatic pressure is Pressure which tries to move water out of the capillaries and colloid osmotic pressure exerted by plasma proteins tries to pull water into the capillaries or into the capillaries.
3. After activation, the B cells can either produce antibodies (plasma cells) or carry the memory about the primary immune response against organism (memory B cells). Both are correct.
4. False. HIV specifically affects the CD4 T cells (Helper T cells). Cytotoxic t cells are CD8.
5. True. Arteries are connected to aorta which in turn receives oxygenated blood from the left ventricle. Veins deliver deoxygenated blood from the periphery to the heart via vena cava.
6. The body is not producing any immune response and antibodies are binding to the antigen. This is an example of Artificially acquired passive immunity. This doesn't last for long as body's immune system is not stimulated.
7. False. Right lymphatic duct receives lymph from right upper limb and half of the right chest. Rest of the body drains into thoracic duct.