Question

Help with anatomy!

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D Question 6 What is the effector cell of humoral immunity? B lymphocyte Plasma cell O B memory cells O Helper T cell Question 7 Which leucocyte is most central to the adaptive immune response? B lymphocyte O T helper cell O T cytotoxic cell O T regulatory cell Question 8 A vaccine is an example of O naturally acquired active immunity O artificially acquired active immunity O naturally acquired passive immunity O artificially acquired passive immunity

Answer 1

Answer 6

d) helper t cells

because for the activation of b cell helper t cell is required the Antibodies produced by B cells cause the destruction of extracellular microorganisms

Answer 7

B lymphocyte

Because it develop from stem cells in the hemopoietic .they are sites where lymphocytes develop from precursor cells,

ANSWER 8

Artificially accuired active immunity

Because a substance that contains antigen. A vaccine stimulates a primary response against the antigen without causing symptoms of the disease.

Answer 4

decreases

Because releases the hormone acetylcholine to slow the heart rate

Answer 9

b) false

GI tract is a hollow organs series that are joined in a long, twisting tube from themouth to the anal

Answer 10

1. True

Because Ca²⁺ channels are still open and there is a small, constant inward current of Ca²⁺. In depolarization phase

Answer 11

Medulla

Because There are two control centres in the medulla oblongata in the brain stem. The cardioacceleratory is for increasing cardiac output and the cardioinhibitory reduces cardiac output

Answer 12

1. True from the pulmonary circulation to oxygenate the rest of the body tissues Blood reaches into the lungs for gas exchange. But bronchial circulation the lung tissues themselves supplies fully oxygenated arterial blood