Select the correct statements regarding mechanism of muscle contraction.
A. It is initiated by a signal sent by CNS via sensory neuron.
B. Neurotransmitter generates action potential in the sarcolemma.
C. Increased Ca$$^{++}$$ level leads to the binding of calcium with troponin on action filaments.
D. Masking of active site for actin is activated.
E. Utilising the energy from ATP hydrolysis to form cross bridge.
Choose the most appropriate answer from the options given below:
Match List I with List II :
| List - I | List - II | ||
|---|---|---|---|
| (A) | Squamous Epithelium | (I) | Goblet cells of alimentary canal |
| (B) | Ciliated Epithelium | (II) | Inner lining of pancreatic ducts |
| (C) | Glandular Epithelium | (III) | Walls of blood vessels |
| (D) | Compound Epithelium | (IV) | Inner surface of Fallopian tubes |
Choose the correct answer from the options given below :
Match List I with List II :
| List - I | List - II | ||
|---|---|---|---|
| (A) | B-Lymphocytes | (I) | Passive immunity |
| (B) | Interferons | (II) | Cell mediated immunity |
| (C) | T-Lymphocytes | (III) | Produce an army of proteins in response to pathogens |
| (D) | Colostrum | (IV) | Innate immunity |
Choose the correct answer from the options given below :
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: During the transportation of gases, about 20-25 percent of CO$$_2$$ is carried by Haemoglobin as carbamino-haemoglobin.
Reason R: This binding is related to high pCO$$_2$$ and low pO$$_2$$ in tissues.
In the light of the above statements, choose the correct answer from the options given below.