What are the roles of helper T cells in the immune response?
What will be an ideal response?
Helper T cells are not killer cells. These cells release chemicals that influence other immune cells. They secrete B-cell growth factor, which enhances the antibody-secreting ability of the activated B-cell clone.Helper T cells secrete T cell growth factor, which augments the activity of cytotoxic T cells, suppressor T cells, and even other helper T cells responsive to the invading antigen. Some chemicals secreted by T cells act as chemotaxins to lure more neutrophils and macrophages-to-be to the invaded area
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Which is TRUE about information from the vestibular system?
A. It is interpreted as sound in the temporal lobes of the brain. B. It is conveyed to nerves that control eye movements. C. It does not reach the level of conscious perception. D. It is conveyed in the form of action potentials in the optic nerve. E. It is primarily conveyed to the cortex of the occipital lobe of the brain.
Macromolecules are built of atoms.
Answer the following statement true (T) or false (F)
Pneumonia can be caused by
A. fungi only. B. bacteria only. C. viruses only. D. bacteria, viruses, or fungi.
Secretions from ________ glands contribute to the acid mantle that inhibits bacterial growth on the skin.
A. sebaceous B. apocrine sweat C. mammary D. ceruminous E. merocrine sweat