Answer:
Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.
99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.
Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.
Answer: B. Tendon
Explanation:
A tendon is a fibrous connective tissue which attaches muscle to bone. A tendon serves to move the bone or structure. Tendons may also attach muscles to structures such as the eyeball. While a ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.
A bursa is a tiny fluid-filled sac that functions as a gliding surface to reduce friction between tissues of the body. The plural of bursa is bursae. There are 160 bursae in the body. The major bursae are located adjacent to the tendons near the large joints, such as the shoulders, elbows, hips, and knees.
A fascia is a band or sheet of connective tissue, primarily collagen, beneath the skin that attaches, stabilizes, encloses, and separates muscles and other internal organs. From the various definitions given above shows that the tendon is the correct answer to the question asked.
None of the above? I’m guessing, secondary, primary and tertiary doesn’t sound right !
Answer: Proteins are digested within the stomach and little intestine. Protease enzymes break down proteins into amino acids.
Explanation:
Functional and economically most important mineral in nutrition of layers
is calcium, primary because of egg production, i.e. forming of the egg shell.
